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Climate and Average Weather Year Round in Saint Augustine Florida, United States

In Saint Augustine, the summers are hot, oppressive, and mostly cloudy; the winters are cool and partly cloudy; and it is wet year round. Over the course of the year, the temperature typically varies from 48°F to 90°F and is rarely below 34°F or above 95°F.

Based on the tourism score, the best times of year to visit Saint Augustine for warm-weather activities are from late March to mid May and from mid October to mid November.

Climate in Saint Augustine

comfortablewarmhotwarmcomfortableJanFebMarAprMayJunJulAugSepOctNovDecNowNow65%65%36%36%clearovercastprecipitation: 5.6 inprecipitation: 5.6 in2.2 in2.2 inmuggy: 99%muggy: 99%3%3%drydrytourism score: 6.9tourism score: 6.93.63.6
Saint Augustine weather by month. Click on each chart for more information.

The hot season lasts for 3.8 months, from May 28 to September 22, with an average daily high temperature above 85°F. The hottest month of the year in Saint Augustine is August, with an average high of 89°F and low of 75°F.

The cool season lasts for 3.0 months, from December 4 to March 4, with an average daily high temperature below 71°F. The coldest month of the year in Saint Augustine is January, with an average low of 48°F and high of 66°F.

Average High and Low Temperature in Saint Augustine

Average High and Low Temperature in Saint AugustinehotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1766°FJan 1766°FJul 2290°FJul 2290°F48°F48°F75°F75°FMay 2885°FMay 2885°FSep 2285°FSep 2285°FDec 471°FDec 471°FMar 471°FMar 471°F70°F70°F73°F73°F54°F54°F53°F53°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 66°F68°F73°F78°F83°F87°F90°F89°F86°F80°F74°F69°F
Temp. 56°F58°F63°F69°F75°F80°F82°F82°F80°F73°F66°F59°F
Low 48°F50°F55°F60°F67°F72°F75°F75°F73°F67°F58°F51°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 Saint Augustine

Average Hourly Temperature in Saint AugustineJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowcoldcoldcoolcoolcomfortablecomfortablewarmhotcold
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.

Fuwwah, Egypt (6,296 miles away) is the far-away foreign place with temperatures most similar to Saint Augustine (view comparison).

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In Saint Augustine, 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 Saint Augustine begins around September 25 and lasts for 8.4 months, ending around June 6.

The clearest month of the year in Saint Augustine 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 6 and lasts for 3.6 months, ending around September 25.

The cloudiest month of the year in Saint Augustine is July, during which on average the sky is overcast or mostly cloudy 63% of the time.

Cloud Cover Categories in Saint Augustine

Cloud Cover Categories in Saint AugustineclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 3065%Apr 3065%Jul 1136%Jul 1136%Sep 2550%Sep 2550%Jun 651%Jun 651%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 44%42%41%37%41%55%63%60%53%40%39%43%
Clearer 56%58%59%63%59%45%37%40%47%60%61%57%

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

The wetter season lasts 4.0 months, from June 1 to October 1, with a greater than 40% chance of a given day being a wet day. The month with the most wet days in Saint Augustine is August, with an average of 18.0 days with at least 0.04 inches of precipitation.

The drier season lasts 8.0 months, from October 1 to June 1. The month with the fewest wet days in Saint Augustine is November, with an average of 6.3 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 Saint Augustine is August, with an average of 18.0 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 13.

Daily Chance of Precipitation in Saint Augustine

Daily Chance of Precipitation in Saint AugustinewetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 1360%Aug 1360%Nov 2119%Nov 2119%Jun 140%Jun 140%Oct 140%Oct 140%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 7.3d7.8d8.4d7.0d8.3d15.0d17.3d18.0d14.0d8.9d6.3d6.5d

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. Saint Augustine experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Saint Augustine. The month with the most rain in Saint Augustine is September, with an average rainfall of 5.4 inches.

The month with the least rain in Saint Augustine is November, with an average rainfall of 2.2 inches.

Average Monthly Rainfall in Saint Augustine

Average Monthly Rainfall in Saint AugustineJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inSep 55.6 inSep 55.6 inNov 102.2 inNov 102.2 inJun 255.0 inJun 255.0 inMar 163.4 inMar 163.4 inApr 292.3 inApr 292.3 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 3.0″3.2″3.4″2.5″2.7″4.7″4.6″5.2″5.4″3.2″2.2″2.5″

The length of the day in Saint Augustine varies significantly over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 13 minutes of daylight; the longest day is June 20, with 14 hours, 4 minutes of daylight.

Hours of Daylight and Twilight in Saint Augustine

Hours of Daylight and Twilight in Saint AugustineJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 4 minJun 2014 hr, 4 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 2210 hr, 13 minDec 2110 hr, 13 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 10.5h11.1h12.0h12.9h13.7h14.0h13.8h13.2h12.3h11.4h10.6h10.3h

The earliest sunrise is at 6:23 AM on June 11, and the latest sunrise is 1 hour, 16 minutes later at 7:40 AM on March 10. The earliest sunset is at 5:25 PM on December 1, and the latest sunset is 3 hours, 5 minutes later at 8:30 PM on June 30.

Daylight saving time (DST) is observed in Saint Augustine 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 Saint Augustine

Sunrise & Sunset with Twilight and Daylight Saving Time in Saint AugustineJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 116:23 AMJun 116:23 AM8:30 PMJun 308:30 PMJun 30Dec 15:25 PMDec 15:25 PM7:40 AMMar 107:40 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 Saint Augustine

Solar Elevation and Azimuth in Saint AugustineJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM000101010102020203030304040405050606070708000010101020202020303030404040505050606070708037NowNow
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 Saint Augustine

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.

Saint Augustine experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.6 months, from April 25 to November 13, during which time the comfort level is muggy, oppressive, or miserable at least 27% of the time. The month with the most muggy days in Saint Augustine is August, with 30.5 days that are muggy or worse.

The month with the fewest muggy days in Saint Augustine is February, with 1.2 days that are muggy or worse.

Humidity Comfort Levels in Saint Augustine

Humidity Comfort Levels in Saint AugustinemuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 313%Jan 313%99%Aug 599%Aug 5Apr 2527%Apr 2527%Nov 1327%Nov 1327%NowNowmiserablemiserableoppressiveoppressivemuggymuggyhumidhumiddrydry
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 1.3d1.2d2.9d6.2d16.8d27.0d30.5d30.5d26.2d16.8d7.5d3.3d

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 Saint Augustine experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 8.0 months, from September 13 to May 14, with average wind speeds of more than 7.4 miles per hour. The windiest month of the year in Saint Augustine is January, with an average hourly wind speed of 8.8 miles per hour.

The calmer time of year lasts for 4.0 months, from May 14 to September 13. The calmest month of the year in Saint Augustine is July, with an average hourly wind speed of 6.1 miles per hour.

Average Wind Speed in Saint Augustine

Average Wind Speed in Saint AugustinewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphJan 298.9 mphJan 298.9 mphAug 36.0 mphAug 36.0 mphSep 137.4 mphSep 137.4 mphMay 147.4 mphMay 147.4 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) 8.88.88.58.07.46.76.16.37.68.48.58.5

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

The wind is most often from the south for 1.0 weeks, from March 18 to March 25 and for 2.1 months, from June 13 to August 15, with a peak percentage of 43% on July 18. The wind is most often from the east for 2.6 months, from March 25 to June 13 and for 2.1 months, from August 15 to October 18, with a peak percentage of 48% on September 9. The wind is most often from the north for 3.9 months, from October 18 to February 15, with a peak percentage of 34% on January 1.

Wind Direction in Saint Augustine

Wind Direction in Saint AugustineNWESENJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Saint Augustine 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 7 to October 11, with an average temperature above 79°F. The month of the year in Saint Augustine with the warmest water is August, with an average temperature of 82°F.

The time of year with cooler water lasts for 3.8 months, from December 18 to April 10, with an average temperature below 69°F. The month of the year in Saint Augustine with the coolest water is February, with an average temperature of 66°F.

Average Water Temperature in Saint Augustine

Average Water Temperature in Saint AugustinewarmcoolJanFebMarAprMayJunJulAugSepOctNovDec60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FAug 2582°FAug 2582°F66°FFeb 2666°FFeb 26Jun 779°FJun 779°FOct 1179°FOct 1179°FDec 1869°FDec 1869°FApr 1069°FApr 1069°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 67°F66°F67°F70°F76°F80°F82°F82°F82°F78°F73°F69°F

To characterize how pleasant the weather is in Saint Augustine 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 Saint Augustine for general outdoor tourist activities are from late March to mid May and from mid October to mid November, with a peak score in the last week of April.

Tourism Score in Saint Augustine

Tourism Score in Saint Augustinebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.96.93.63.66.76.74.04.0NowNowtemperaturetemperature 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 Saint Augustine for hot-weather activities are from early May to mid June and from mid September to mid October, with a peak score in the third week of May.

Beach/Pool Score in Saint Augustine

Beach/Pool Score in Saint Augustinebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.26.21.11.15.95.94.84.8NowNowtemperaturetemperature 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 Saint Augustine typically lasts for 11 months (330 days), from around February 3 to around December 28, rarely starting after March 1, or ending before December 11.

Time Spent in Various Temperature Bands and the Growing Season in Saint Augustine

Time Spent in Various Temperature Bands and the Growing Season in Saint Augustinegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Feb 350%Feb 350%Dec 2850%Dec 2890%Mar 190%Mar 190%Dec 1190%Dec 1124%Jan 1524%Jan 15Jul 26100%Jul 26100%NowNowcoldcoolcomfortablewarmhot
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 Saint Augustine should appear around January 12, only rarely appearing before January 8 or after January 21.

Growing Degree Days in Saint Augustine

Growing Degree Days in Saint AugustineJanFebMarAprMayJunJulAugSepOctNovDec0°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°FJan 1290°FJan 1290°FMar 28900°FMar 28900°FMay 131,800°FMay 131,800°FDec 317,466°FDec 317,466°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 2.2 months, from April 4 to June 11, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year in Saint Augustine is May, with an average of 6.6 kWh.

The darker period of the year lasts for 2.8 months, from November 8 to February 3, with an average daily incident shortwave energy per square meter below 3.8 kWh. The darkest month of the year in Saint Augustine is December, with an average of 3.2 kWh.

Average Daily Incident Shortwave Solar Energy in Saint Augustine

Average Daily Incident Shortwave Solar Energy in Saint AugustinebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMay 16.7 kWhMay 16.7 kWhDec 203.1 kWhDec 203.1 kWhJun 116.0 kWhJun 116.0 kWhFeb 33.8 kWhFeb 33.8 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) 3.44.35.46.36.65.95.45.14.94.53.73.2

For the purposes of this report, the geographical coordinates of Saint Augustine are 29.895 deg latitude, -81.315 deg longitude, and 3 ft elevation.

The topography within 2 miles of Saint Augustine is essentially flat, with a maximum elevation change of 36 feet and an average elevation above sea level of 7 feet. Within 10 miles is also essentially flat (56 feet). Within 50 miles is essentially flat (285 feet).

The area within 2 miles of Saint Augustine is covered by artificial surfaces (62%) and water (27%), within 10 miles by water (43%) and herbaceous vegetation (31%), and within 50 miles by water (50%) and trees (19%).

This report illustrates the typical weather in Saint Augustine, 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 Saint Augustine.

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