1. WeatherSpark.com
  2. United States
  3. Florida

Climate and Average Weather Year Round in Grant-Valkaria Florida, United States

In Grant-Valkaria, the summers are long, hot, oppressive, wet, and mostly cloudy and the winters are short, cool, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 53°F to 89°F and is rarely below 38°F or above 93°F.

Based on the tourism score, the best times of year to visit Grant-Valkaria for warm-weather activities are from late February to mid May and from late October to mid December.

Climate in Grant-Valkaria

comfortablewarmhotwarmJanFebMarAprMayJunJulAugSepOctNovDecNowNow64%64%31%31%clearovercastprecipitation: 5.8 inprecipitation: 5.8 in1.9 in1.9 inmuggy: 100%muggy: 100%13%13%drydrytourism score: 6.8tourism score: 6.83.43.4
Grant-Valkaria weather by month. Click on each chart for more information.

The hot season lasts for 4.1 months, from May 24 to September 28, with an average daily high temperature above 86°F. The hottest month of the year in Grant-Valkaria is July, with an average high of 89°F and low of 75°F.

The cool season lasts for 2.8 months, from December 4 to February 28, with an average daily high temperature below 75°F. The coldest month of the year in Grant-Valkaria is January, with an average low of 53°F and high of 72°F.

Average High and Low Temperature in Grant-Valkaria

Average High and Low Temperature in Grant-ValkariahotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1571°FJan 1571°FJul 2289°FJul 2289°F53°F53°F75°F75°FMay 2486°FMay 2486°FSep 2886°FSep 2886°FDec 475°FDec 475°FFeb 2875°FFeb 2875°F71°F71°F73°F73°F59°F59°F57°F57°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 72°F73°F77°F81°F85°F88°F89°F89°F87°F83°F78°F73°F
Temp. 61°F64°F68°F72°F77°F80°F81°F81°F80°F76°F70°F64°F
Low 53°F55°F59°F64°F69°F73°F75°F75°F74°F69°F62°F57°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 Grant-Valkaria

Average Hourly Temperature in Grant-ValkariaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowcoldcoolcoolcoolcoolcomfortablecomfortablewarmhot
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.

Pāsighāt, India (8,567 miles away) and Nantou, Taiwan (8,594 miles) are the far-away foreign places with temperatures most similar to Grant-Valkaria (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Grant-Valkaria to another city:

Map

In Grant-Valkaria, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Grant-Valkaria begins around October 2 and lasts for 8.0 months, ending around June 4.

The clearest month of the year in Grant-Valkaria is April, 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 June 4 and lasts for 4.0 months, ending around October 2.

The cloudiest month of the year in Grant-Valkaria is July, during which on average the sky is overcast or mostly cloudy 67% of the time.

Cloud Cover Categories in Grant-Valkaria

Cloud Cover Categories in Grant-ValkariaclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 3064%Apr 3064%Jul 631%Jul 631%Oct 248%Oct 248%Jun 448%Jun 448%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 42%38%38%37%42%60%67%66%60%45%39%41%
Clearer 58%62%62%63%58%40%33%34%40%55%61%59%

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

The wetter season lasts 4.4 months, from May 26 to October 6, with a greater than 39% chance of a given day being a wet day. The month with the most wet days in Grant-Valkaria is August, with an average of 18.1 days with at least 0.04 inches of precipitation.

The drier season lasts 7.6 months, from October 6 to May 26. The month with the fewest wet days in Grant-Valkaria is December, with an average of 5.7 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 Grant-Valkaria is August, with an average of 18.1 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 60% on August 23.

Daily Chance of Precipitation in Grant-Valkaria

Daily Chance of Precipitation in Grant-ValkariawetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 2360%Aug 2360%Nov 2017%Nov 2017%May 2639%May 2639%Oct 639%Oct 639%NowNowrain
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 6.0d6.4d7.6d7.1d9.4d15.9d17.6d18.1d15.6d9.8d5.8d5.7d

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. Grant-Valkaria experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Grant-Valkaria. The month with the most rain in Grant-Valkaria is August, with an average rainfall of 5.8 inches.

The month with the least rain in Grant-Valkaria is December, with an average rainfall of 1.9 inches.

Average Monthly Rainfall in Grant-Valkaria

Average Monthly Rainfall in Grant-ValkariaJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inJun 245.8 inJun 245.8 inDec 221.9 inDec 221.9 inAug 205.8 inAug 205.8 inMar 232.8 inMar 232.8 inNowNow
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 2.1″2.3″2.8″2.5″3.2″5.6″5.5″5.8″5.6″3.8″2.3″1.9″

The length of the day in Grant-Valkaria varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 22 minutes of daylight; the longest day is June 20, with 13 hours, 55 minutes of daylight.

Hours of Daylight and Twilight in Grant-Valkaria

Hours of Daylight and Twilight in Grant-ValkariaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1913 hr, 55 minJun 2013 hr, 55 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 2210 hr, 22 minDec 2110 hr, 22 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 10.6h11.2h12.0h12.9h13.6h13.9h13.7h13.1h12.3h11.5h10.8h10.4h

The earliest sunrise is at 6:25 AM on June 9, and the latest sunrise is 1 hour, 11 minutes later at 7:36 AM on March 10. The earliest sunset is at 5:26 PM on November 30, and the latest sunset is 2 hours, 56 minutes later at 8:22 PM on June 30.

Daylight saving time (DST) is observed in Grant-Valkaria 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 Grant-Valkaria

Sunrise & Sunset with Twilight and Daylight Saving Time in Grant-ValkariaJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 96:25 AMJun 96:25 AM8:22 PMJun 308:22 PMJun 30Nov 305:26 PMNov 305:26 PM7:36 AMMar 107:36 AMMar 10Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Grant-Valkaria

Solar Elevation and Azimuth in Grant-ValkariaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00010101010202020303030404040405050606070708000010101020202020303030404040505050606070708039NowNow
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 Grant-Valkaria

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.

Grant-Valkaria experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.2 months, from April 15 to November 21, during which time the comfort level is muggy, oppressive, or miserable at least 35% of the time. The month with the most muggy days in Grant-Valkaria is August, with 31.0 days that are muggy or worse.

The month with the fewest muggy days in Grant-Valkaria is February, with 4.6 days that are muggy or worse.

Humidity Comfort Levels in Grant-Valkaria

Humidity Comfort Levels in Grant-ValkariamuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 3013%Jan 3013%100%Jul 30100%Jul 30Apr 1535%Apr 1535%Nov 2135%Nov 2135%NowNowmiserablemiserableoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydry
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 5.1d4.6d7.0d10.9d20.6d28.7d31.0d31.0d29.0d21.1d11.8d8.4d

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 Grant-Valkaria experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 8.0 months, from September 27 to May 26, with average wind speeds of more than 8.8 miles per hour. The windiest month of the year in Grant-Valkaria is March, with an average hourly wind speed of 10.9 miles per hour.

The calmer time of year lasts for 4.0 months, from May 26 to September 27. The calmest month of the year in Grant-Valkaria is July, with an average hourly wind speed of 6.8 miles per hour.

Average Wind Speed in Grant-Valkaria

Average Wind Speed in Grant-ValkariawindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphMar 1311.1 mphMar 1311.1 mphAug 36.6 mphAug 36.6 mphSep 278.8 mphSep 278.8 mphMay 268.8 mphMay 268.8 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) 10.610.810.910.29.27.86.87.08.29.810.510.2

The predominant average hourly wind direction in Grant-Valkaria varies throughout the year.

The wind is most often from the east for 4.1 months, from February 20 to June 24 and for 4.5 months, from August 9 to December 24, with a peak percentage of 53% on September 23. The wind is most often from the south for 1.5 months, from June 24 to August 9, with a peak percentage of 43% on July 19. The wind is most often from the north for 1.9 months, from December 24 to February 20, with a peak percentage of 30% on January 1.

Wind Direction in Grant-Valkaria

Wind Direction in Grant-ValkariaNESEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
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).

Grant-Valkaria 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 some seasonal variation over the course of the year.

The time of year with warmer water lasts for 4.1 months, from June 14 to October 16, with an average temperature above 81°F. The month of the year in Grant-Valkaria with the warmest water is August, with an average temperature of 83°F.

The time of year with cooler water lasts for 3.4 months, from December 26 to April 7, with an average temperature below 74°F. The month of the year in Grant-Valkaria with the coolest water is February, with an average temperature of 71°F.

Average Water Temperature in Grant-Valkaria

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 72°F71°F72°F74°F78°F81°F82°F83°F83°F81°F77°F74°F

To characterize how pleasant the weather is in Grant-Valkaria 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 Grant-Valkaria for general outdoor tourist activities are from late February to mid May and from late October to mid December, with a peak score in the third week of April.

Tourism Score in Grant-Valkaria

Tourism Score in Grant-Valkariabest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.86.83.43.46.66.65.45.4NowNowtemperaturetemperature 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 times of year to visit Grant-Valkaria for hot-weather activities are from late April to early June and for the entire month of October, with a peak score in the second week of May.

Beach/Pool Score in Grant-Valkaria

Beach/Pool Score in Grant-Valkariabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.66.62.62.66.16.14.64.6NowNowtemperaturetemperature 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).

While it does not do so every year, freezing temperatures are seen in Grant-Valkaria over some winters. The day least likely to be in the growing season is January 16, with a 61% chance.

Time Spent in Various Temperature Bands and the Growing Season in Grant-Valkaria

Time Spent in Various Temperature Bands and the Growing Season in Grant-Valkariagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%90%Feb 1590%Feb 1590%Dec 1890%Dec 1861%Jan 1661%Jan 16Jul 19100%Jul 19100%NowNowcoldcoolcomfortablewarmhotvery cold
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 Grant-Valkaria should appear around January 8, only rarely appearing before January 6 or after January 13.

Growing Degree Days in Grant-Valkaria

Growing Degree Days in Grant-ValkariaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°F7,000°F7,000°F8,000°F8,000°FJan 890°FJan 890°FMar 7900°FMar 7900°FApr 221,800°FApr 221,800°FDec 318,381°FDec 318,381°FNowNow
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 2.0 months, from April 2 to June 1, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest month of the year in Grant-Valkaria is May, with an average of 6.5 kWh.

The darker period of the year lasts for 2.7 months, from November 7 to January 30, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest month of the year in Grant-Valkaria is December, with an average of 3.4 kWh.

Average Daily Incident Shortwave Solar Energy in Grant-Valkaria

Average Daily Incident Shortwave Solar Energy in Grant-ValkariabrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMay 26.8 kWhMay 26.8 kWhDec 213.4 kWhDec 213.4 kWhJan 304.1 kWhJan 304.1 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) 3.74.65.66.46.55.54.94.84.74.53.93.4

For the purposes of this report, the geographical coordinates of Grant-Valkaria are 27.940 deg latitude, -80.571 deg longitude, and 20 ft elevation.

The topography within 2 miles of Grant-Valkaria is essentially flat, with a maximum elevation change of 23 feet and an average elevation above sea level of 20 feet. Within 10 miles is also essentially flat (33 feet). Within 50 miles is essentially flat (144 feet).

The area within 2 miles of Grant-Valkaria is covered by herbaceous vegetation (36%), trees (35%), and artificial surfaces (29%), within 10 miles by artificial surfaces (34%) and water (32%), and within 50 miles by water (46%) and cropland (20%).

This report illustrates the typical weather in Grant-Valkaria, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Grant-Valkaria.

For each station, the records are corrected for the elevation difference between that station and Grant-Valkaria 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 Grant-Valkaria is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Grant-Valkaria 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 Grant-Valkaria 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.