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Climate and Average Weather Year Round in Seaford Delaware, United States

In Seaford, the summers are hot, muggy, and wet; the winters are very cold, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 27°F to 88°F and is rarely below 13°F or above 96°F.

Based on the tourism score, the best times of year to visit Seaford for warm-weather activities are for the entire month of June and from mid August to early October.

Climate in Seaford

coldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow64%64%48%48%clearovercastprecipitation: 3.7 inprecipitation: 3.7 in2.8 in2.8 inmuggy: 71%muggy: 71%0%0%drydrytourism score: 6.3tourism score: 6.30.50.5
Seaford weather by month. Click on each chart for more information.

The hot season lasts for 3.6 months, from May 28 to September 15, with an average daily high temperature above 80°F. The hottest month of the year in Seaford is July, with an average high of 88°F and low of 69°F.

The cold season lasts for 3.0 months, from December 2 to March 4, with an average daily high temperature below 53°F. The coldest month of the year in Seaford is January, with an average low of 28°F and high of 44°F.

Average High and Low Temperature in Seaford

Average High and Low Temperature in SeafordhotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 3044°FJan 3044°FJul 2088°FJul 2088°F27°F27°F69°F69°FMay 2880°FMay 2880°FSep 1580°FSep 1580°FDec 253°FDec 253°FMar 453°FMar 453°F59°F59°F60°F60°F34°F34°F33°F33°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 44°F47°F56°F67°F76°F84°F88°F86°F79°F69°F58°F49°F
Temp. 35°F37°F45°F55°F65°F73°F78°F75°F69°F57°F48°F39°F
Low 28°F29°F37°F45°F55°F64°F69°F66°F59°F48°F39°F32°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in Seaford

Average Hourly Temperature in SeafordJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoldcoolcoolcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Bagratashen, Armenia (5,772 miles away) is the far-away foreign place with temperatures most similar to Seaford (view comparison).

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In Seaford, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year in Seaford begins around July 12 and lasts for 4.3 months, ending around November 21.

The clearest month of the year in Seaford is October, during which on average the sky is clear, mostly clear, or partly cloudy 63% of the time.

The cloudier part of the year begins around November 21 and lasts for 7.7 months, ending around July 12.

The cloudiest month of the year in Seaford is January, during which on average the sky is overcast or mostly cloudy 51% of the time.

Cloud Cover Categories in Seaford

Cloud Cover Categories in SeafordclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 1164%Oct 1164%Jan 548%Jan 548%Jul 1256%Jul 1256%Nov 2156%Nov 2156%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 51%50%49%47%47%46%42%39%38%37%43%49%
Clearer 49%50%51%53%53%54%58%61%62%63%57%51%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Seaford varies throughout the year.

The wetter season lasts 4.9 months, from March 31 to August 27, with a greater than 30% chance of a given day being a wet day. The month with the most wet days in Seaford is July, with an average of 11.2 days with at least 0.04 inches of precipitation.

The drier season lasts 7.1 months, from August 27 to March 31. The month with the fewest wet days in Seaford is October, with an average of 7.0 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Seaford is July, with an average of 11.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 38% on August 5.

Daily Chance of Precipitation in Seaford

Daily Chance of Precipitation in SeafordwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 538%Aug 538%Oct 1921%Oct 1921%Mar 3130%Mar 3130%NowNowrainsnow
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 5.5d5.6d7.8d8.7d9.5d10.4d11.2d10.3d7.7d6.9d6.8d6.8d
Mixed 1.2d1.4d0.7d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.3d0.9d
Snow 0.9d0.6d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d0.4d
Any 7.6d7.7d8.7d8.8d9.5d10.4d11.2d10.3d7.7d7.0d7.1d8.1d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Seaford experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Seaford. The month with the most rain in Seaford is August, with an average rainfall of 3.7 inches.

The month with the least rain in Seaford is January, with an average rainfall of 2.5 inches.

Average Monthly Rainfall in Seaford

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 2.5″2.5″3.4″3.3″3.2″3.2″3.3″3.7″3.4″3.3″3.1″2.9″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Seaford experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 3.8 months, from November 24 to March 19, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Seaford is February, with an average snowfall of 4.2 inches.

The snowless period of the year lasts for 8.2 months, from March 19 to November 24. The least snow falls around July 12, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Seaford

Average Monthly Snowfall in SeafordsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inJan 274.5 inJan 274.5 inJul 120.0 inJul 120.0 inNov 241.0 inNov 241.0 inMar 191.0 inMar 191.0 in
The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 4.0″4.2″1.2″0.0″0.0″0.0″0.0″0.0″0.0″0.0″0.6″2.2″

The length of the day in Seaford varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 28 minutes of daylight; the longest day is June 20, with 14 hours, 52 minutes of daylight.

Hours of Daylight and Twilight in Seaford

Hours of Daylight and Twilight in SeafordJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 52 minJun 2014 hr, 52 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 229 hr, 28 minDec 219 hr, 28 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 9.8h10.8h12.0h13.3h14.3h14.8h14.5h13.6h12.4h11.2h10.1h9.5h

The earliest sunrise is at 5:37 AM on June 13, and the latest sunrise is 1 hour, 54 minutes later at 7:30 AM on November 2. The earliest sunset is at 4:40 PM on December 5, and the latest sunset is 3 hours, 50 minutes later at 8:31 PM on June 27.

Daylight saving time (DST) is observed in Seaford during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

Sunrise & Sunset with Twilight and Daylight Saving Time in Seaford

Sunrise & Sunset with Twilight and Daylight Saving Time in SeafordJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:37 AMJun 135:37 AM8:31 PMJun 278:31 PMJun 27Dec 54:40 PMDec 54:40 PM7:30 AMNov 27:30 AMNov 2Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in Seaford

Solar Elevation and Azimuth in SeafordJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM0001010101020202030303040404050506060700001010102020202030304040505060702875NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases in Seaford

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Seaford experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.4 months, from May 18 to September 30, during which time the comfort level is muggy, oppressive, or miserable at least 18% of the time. The month with the most muggy days in Seaford is July, with 20.9 days that are muggy or worse.

The month with the fewest muggy days in Seaford is February, with 0.0 days that are muggy or worse.

Humidity Comfort Levels in Seaford

Humidity Comfort Levels in SeafordmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 280%Jan 280%Aug 171%Aug 171%May 1818%May 1818%Sep 3018%Sep 3018%NowNowoppressiveoppressivemuggymuggydrydrymiserablemiserable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.1d0.7d5.2d14.0d20.9d18.7d9.6d2.5d0.4d0.1d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Seaford experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.0 months, from October 12 to May 13, with average wind speeds of more than 9.9 miles per hour. The windiest month of the year in Seaford is March, with an average hourly wind speed of 12.0 miles per hour.

The calmer time of year lasts for 5.0 months, from May 13 to October 12. The calmest month of the year in Seaford is August, with an average hourly wind speed of 7.9 miles per hour.

Average Wind Speed in Seaford

Average Wind Speed in SeafordwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphFeb 2612.1 mphFeb 2612.1 mphAug 127.7 mphAug 127.7 mphOct 129.9 mphOct 129.9 mphMay 139.9 mphMay 139.9 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 11.511.812.011.49.88.67.97.98.810.010.811.1

The predominant average hourly wind direction in Seaford varies throughout the year.

The wind is most often from the north for 1.7 months, from February 8 to March 30 and for 1.1 months, from October 10 to November 14, with a peak percentage of 33% on February 11. The wind is most often from the south for 6.4 months, from March 30 to October 10, with a peak percentage of 40% on July 27. The wind is most often from the west for 2.8 months, from November 14 to February 8, with a peak percentage of 36% on January 1.

Wind Direction in Seaford

Wind Direction in SeafordWNSNWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Seaford is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.5 months, from June 19 to October 2, with an average temperature above 69°F. The month of the year in Seaford with the warmest water is August, with an average temperature of 76°F.

The time of year with cooler water lasts for 3.6 months, from December 19 to April 6, with an average temperature below 47°F. The month of the year in Seaford with the coolest water is February, with an average temperature of 39°F.

Average Water Temperature in Seaford

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 42°F39°F42°F49°F58°F68°F75°F76°F72°F65°F56°F47°F

To characterize how pleasant the weather is in Seaford throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Seaford for general outdoor tourist activities are for the entire month of June and from mid August to early October, with a peak score in the first week of September.

Tourism Score in Seaford

Tourism Score in Seafordbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.36.30.50.55.75.75.25.2NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Seaford for hot-weather activities is from mid June to early September, with a peak score in the third week of July.

Beach/Pool Score in Seaford

Beach/Pool Score in Seafordbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.95.90.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Seaford typically lasts for 6.5 months (200 days), from around April 7 to around October 24, rarely starting before March 22 or after April 23, and rarely ending before October 7 or after November 10.

Time Spent in Various Temperature Bands and the Growing Season in Seaford

Time Spent in Various Temperature Bands and the Growing Season in Seafordgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 750%Apr 750%Oct 2450%Oct 2490%Apr 2390%Apr 2390%Oct 790%Oct 710%Mar 2210%Mar 2210%Nov 1010%Nov 100%Dec 120%Dec 12Jul 14100%Jul 14100%NowNowfreezingvery coldcoldcomfortablewarmhotcoolfrigid
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Seaford should appear around March 11, only rarely appearing before February 23 or after March 30.

Growing Degree Days in Seaford

Growing Degree Days in SeafordJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°FMar 1184°FMar 1184°FJun 2900°FJun 2900°FJul 101,800°FJul 101,800°FDec 314,158°FDec 314,158°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 3.8 months, from April 23 to August 18, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year in Seaford is June, with an average of 6.9 kWh.

The darker period of the year lasts for 3.1 months, from November 6 to February 9, with an average daily incident shortwave energy per square meter below 3.0 kWh. The darkest month of the year in Seaford is December, with an average of 2.1 kWh.

Average Daily Incident Shortwave Solar Energy in Seaford

Average Daily Incident Shortwave Solar Energy in SeafordbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 227.0 kWhJun 227.0 kWhDec 222.0 kWhDec 222.0 kWhApr 236.0 kWhApr 236.0 kWhAug 186.0 kWhAug 186.0 kWhNov 63.0 kWhNov 63.0 kWhFeb 93.0 kWhFeb 93.0 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 2.43.24.45.76.56.96.66.05.13.82.72.1

For the purposes of this report, the geographical coordinates of Seaford are 38.641 deg latitude, -75.611 deg longitude, and 13 ft elevation.

The topography within 2 miles of Seaford is essentially flat, with a maximum elevation change of 33 feet and an average elevation above sea level of 20 feet. Within 10 miles is essentially flat (128 feet). Within 50 miles also contains only modest variations in elevation (161 feet).

The area within 2 miles of Seaford is covered by artificial surfaces (43%), cropland (41%), and trees (16%), within 10 miles by cropland (70%) and trees (25%), and within 50 miles by water (42%) and cropland (30%).

This report illustrates the typical weather in Seaford, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Seaford.

For each station, the records are corrected for the elevation difference between that station and Seaford according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Seaford is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Seaford and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Seaford and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.