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

Climate and Average Weather Year Round in Baton Rouge Louisiana, United States

In Baton Rouge, the summers are long, hot, and oppressive; the winters are short and cold; and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 43°F to 91°F and is rarely below 29°F or above 95°F.

Based on the tourism score, the best times of year to visit Baton Rouge for warm-weather activities are from early April to late May and from mid September to late October.

Climate in Baton Rouge

coolcomfortablewarmhotwarmcoolJanFebMarAprMayJunJulAugSepOctNovDecNowNow68%68%46%46%clearovercastprecipitation: 5.4 inprecipitation: 5.4 in3.6 in3.6 inmuggy: 99%muggy: 99%4%4%drydrytourism score: 6.3tourism score: 6.32.72.7
Baton Rouge weather by month. Click on each chart for more information.

The hot season lasts for 4.3 months, from May 16 to September 25, with an average daily high temperature above 85°F. The hottest month of the year in Baton Rouge is July, with an average high of 90°F and low of 74°F.

The cool season lasts for 2.8 months, from November 30 to February 23, with an average daily high temperature below 67°F. The coldest month of the year in Baton Rouge is January, with an average low of 43°F and high of 62°F.

Average High and Low Temperature in Baton Rouge

Average High and Low Temperature in Baton RougehotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2362°FJan 2362°FAug 991°FAug 991°F43°F43°F74°F74°FMay 1685°FMay 1685°FSep 2585°FSep 2585°FNov 3067°FNov 3067°F66°F66°F66°F66°F48°F48°F48°F48°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 62°F66°F72°F78°F85°F89°F90°F90°F87°F79°F71°F64°F
Temp. 51°F55°F61°F68°F75°F80°F81°F81°F77°F68°F60°F53°F
Low 43°F46°F53°F59°F66°F72°F74°F74°F69°F59°F51°F45°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 Baton Rouge

Average Hourly Temperature in Baton RougeJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowcoldcoldcoldcoldcoolcoolcomfortablewarmwarmhot
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.

Roxby Downs, South Australia, Australia (9,610 miles away) is the far-away foreign place with temperatures most similar to Baton Rouge (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Baton Rouge to another city:

Map

In Baton Rouge, 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 Baton Rouge begins around September 13 and lasts for 2.8 months, ending around December 8.

The clearest month of the year in Baton Rouge is October, during which on average the sky is clear, mostly clear, or partly cloudy 66% of the time.

The cloudier part of the year begins around December 8 and lasts for 9.2 months, ending around September 13.

The cloudiest month of the year in Baton Rouge is July, during which on average the sky is overcast or mostly cloudy 53% of the time.

Cloud Cover Categories in Baton Rouge

Cloud Cover Categories in Baton RougeclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 2568%Oct 2568%Jul 2946%Jul 2946%Sep 1356%Sep 1356%Dec 857%Dec 857%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 47%46%43%38%41%44%53%50%41%34%36%45%
Clearer 53%54%57%62%59%56%47%50%59%66%64%55%

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

The wetter season lasts 3.5 months, from May 26 to September 9, with a greater than 39% chance of a given day being a wet day. The month with the most wet days in Baton Rouge is July, with an average of 17.0 days with at least 0.04 inches of precipitation.

The drier season lasts 8.5 months, from September 9 to May 26. The month with the fewest wet days in Baton Rouge is October, with an average of 7.6 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 Baton Rouge is July, with an average of 17.0 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 55% on July 10.

Daily Chance of Precipitation in Baton Rouge

Daily Chance of Precipitation in Baton RougewetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 1055%Jul 1055%Oct 2823%Oct 2823%May 2639%May 2639%Sep 939%Sep 939%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 9.7d8.7d8.8d8.5d10.7d14.9d17.0d14.8d10.4d7.6d8.1d9.5d
Mixed 0.2d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d
Any 9.9d8.8d8.8d8.5d10.7d14.9d17.0d14.8d10.4d7.6d8.1d9.5d

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. Baton Rouge experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Baton Rouge. The month with the most rain in Baton Rouge is January, with an average rainfall of 5.3 inches.

The month with the least rain in Baton Rouge is October, with an average rainfall of 3.9 inches.

Average Monthly Rainfall in Baton Rouge

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 5.3″5.1″4.6″4.5″4.7″5.3″4.7″4.6″4.0″3.9″4.2″4.7″

The length of the day in Baton Rouge varies significantly over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 11 minutes of daylight; the longest day is June 20, with 14 hours, 7 minutes of daylight.

Hours of Daylight and Twilight in Baton Rouge

Hours of Daylight and Twilight in Baton RougeJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 7 minJun 2014 hr, 7 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 2210 hr, 11 minDec 2110 hr, 11 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 10.4h11.1h12.0h12.9h13.7h14.1h13.9h13.2h12.3h11.4h10.6h10.2h

The earliest sunrise is at 6:01 AM on June 10, and the latest sunrise is 1 hour, 19 minutes later at 7:20 AM on November 2. The earliest sunset is at 5:03 PM on December 2, and the latest sunset is 3 hours, 8 minutes later at 8:10 PM on June 30.

Daylight saving time (DST) is observed in Baton Rouge 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 Baton Rouge

Sunrise & Sunset with Twilight and Daylight Saving Time in Baton RougeJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 106:01 AMJun 106:01 AM8:10 PMJun 308:10 PMJun 30Dec 25:03 PMDec 25:03 PM7:20 AMNov 27:20 AMNov 2Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Baton Rouge

Solar Elevation and Azimuth in Baton RougeJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0001010101020202030303040404050506060708000010101020202020303030404040505050606070708036NowNow
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 Baton Rouge

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.

Baton Rouge experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.2 months, from April 15 to October 23, during which time the comfort level is muggy, oppressive, or miserable at least 28% of the time. The month with the most muggy days in Baton Rouge is July, with 30.4 days that are muggy or worse.

The month with the fewest muggy days in Baton Rouge is January, with 1.6 days that are muggy or worse.

Humidity Comfort Levels in Baton Rouge

Humidity Comfort Levels in Baton RougemuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 294%Jan 294%99%Jul 2299%Jul 22Apr 1528%Apr 1528%Oct 2328%Oct 2328%NowNowmiserablemiserableoppressiveoppressivedrydrymuggymuggyhumidhumidcomfortablecomfortable
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 1.6d1.7d4.0d8.6d19.1d27.3d30.4d29.6d22.5d10.9d4.7d2.8d

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 Baton Rouge experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.4 months, from October 7 to May 20, with average wind speeds of more than 6.2 miles per hour. The windiest month of the year in Baton Rouge is February, with an average hourly wind speed of 7.6 miles per hour.

The calmer time of year lasts for 4.6 months, from May 20 to October 7. The calmest month of the year in Baton Rouge is August, with an average hourly wind speed of 4.7 miles per hour.

Average Wind Speed in Baton Rouge

Average Wind Speed in Baton RougewindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphFeb 257.7 mphFeb 257.7 mphAug 74.6 mphAug 74.6 mphOct 76.2 mphOct 76.2 mphMay 206.2 mphMay 206.2 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) 7.47.67.67.36.45.34.74.75.56.36.97.3

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

The wind is most often from the south for 4.8 months, from February 25 to July 19 and for 2.3 weeks, from August 8 to August 24, with a peak percentage of 51% on June 2. The wind is most often from the east for 2.4 months, from August 24 to November 7, with a peak percentage of 38% on September 19. The wind is most often from the north for 3.6 months, from November 7 to February 25, with a peak percentage of 39% on January 1.

Wind Direction in Baton Rouge

Wind Direction in Baton RougeNSWSENJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Baton Rouge 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 3.9 months, from May 28 to September 25, with an average temperature above 81°F. The month of the year in Baton Rouge with the warmest water is August, with an average temperature of 85°F.

The time of year with cooler water lasts for 3.5 months, from December 6 to March 20, with an average temperature below 65°F. The month of the year in Baton Rouge with the coolest water is February, with an average temperature of 61°F.

Average Water Temperature in Baton Rouge

Average Water Temperature in Baton RougewarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°FAug 986°FAug 986°F60°FFeb 260°FFeb 2May 2881°FMay 2881°FSep 2581°FSep 2581°FDec 665°FDec 665°FMar 2065°FMar 2065°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 61°F61°F64°F71°F78°F83°F85°F85°F82°F76°F69°F64°F

To characterize how pleasant the weather is in Baton Rouge 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 Baton Rouge for general outdoor tourist activities are from early April to late May and from mid September to late October, with a peak score in the last week of April.

Tourism Score in Baton Rouge

Tourism Score in Baton Rougebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.36.32.72.76.26.24.14.1NowNowtemperaturetemperature 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 Baton Rouge for hot-weather activities are from early May to early July and from mid August to late September, with a peak score in the first week of June.

Beach/Pool Score in Baton Rouge

Beach/Pool Score in Baton Rougebest timebest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.95.90.70.75.85.85.25.2NowNowtemperaturetemperature 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 Baton Rouge typically lasts for 9.5 months (287 days), from around February 20 to around December 3, rarely starting before January 24 or after March 17, and rarely ending before November 10 or after December 25.

Time Spent in Various Temperature Bands and the Growing Season in Baton Rouge

Time Spent in Various Temperature Bands and the Growing Season in Baton Rougegrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Feb 2050%Feb 2050%Dec 350%Dec 390%Mar 1790%Mar 1790%Nov 1090%Nov 1010%Jan 2410%Jan 2410%Dec 2510%Dec 25Jul 14100%Jul 14100%NowNowvery coldcoldcoolcomfortablewarmhot
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 Baton Rouge should appear around January 17, only rarely appearing before January 10 or after January 31.

Growing Degree Days in Baton Rouge

Growing Degree Days in Baton RougeJanFebMarAprMayJunJulAugSepOctNovDec0°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 1790°FJan 1790°FApr 8900°FApr 8900°FMay 201,800°FMay 201,800°FDec 316,743°FDec 316,743°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 3.0 months, from March 31 to June 29, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest month of the year in Baton Rouge is May, with an average of 6.5 kWh.

The darker period of the year lasts for 2.5 months, from November 16 to February 1, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest month of the year in Baton Rouge is December, with an average of 3.0 kWh.

Average Daily Incident Shortwave Solar Energy in Baton Rouge

Average Daily Incident Shortwave Solar Energy in Baton RougebrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMay 186.5 kWhMay 186.5 kWhDec 232.9 kWhDec 232.9 kWhMar 315.8 kWhMar 315.8 kWhJun 295.8 kWhJun 295.8 kWhFeb 13.7 kWhFeb 13.7 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) 3.34.15.26.26.56.15.75.45.24.73.73.0

For the purposes of this report, the geographical coordinates of Baton Rouge are 30.451 deg latitude, -91.155 deg longitude, and 46 ft elevation.

The topography within 2 miles of Baton Rouge is essentially flat, with a maximum elevation change of 43 feet and an average elevation above sea level of 47 feet. Within 10 miles is essentially flat (118 feet). Within 50 miles also contains only modest variations in elevation (440 feet).

The area within 2 miles of Baton Rouge is covered by artificial surfaces (97%), within 10 miles by artificial surfaces (44%) and herbaceous vegetation (29%), and within 50 miles by herbaceous vegetation (53%) and cropland (24%).

This report illustrates the typical weather in Baton Rouge, 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 Baton Rouge.

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