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Climate and Average Weather Year Round in Alekseyevskaya Russia

In Alekseyevskaya, the summers are comfortable and mostly cloudy and the winters are frigid, snowy, and overcast. Over the course of the year, the temperature typically varies from -27°F to 73°F and is rarely below -52°F or above 84°F.

Based on the tourism score, the best time of year to visit Alekseyevskaya for warm-weather activities is from late June to early August.

Climate in Alekseyevskaya

frigidcoldcoolcomfortablecoolcoldfrigidJanFebMarAprMayJunJulAugSepOctNovDecNowNow52%52%12%12%overcastclearprecipitation: 2.3 inprecipitation: 2.3 in0.2 in0.2 inmuggy: 4%muggy: 4%0%0%drydrytourism score: 5.0tourism score: 5.00.00.0
Alekseyevskaya weather by month. Click on each chart for more information.

The warm season lasts for 3.5 months, from May 20 to September 6, with an average daily high temperature above 56°F. The hottest month of the year in Alekseyevskaya is July, with an average high of 72°F and low of 52°F.

The cold season lasts for 3.2 months, from November 18 to February 24, with an average daily high temperature below 8°F. The coldest month of the year in Alekseyevskaya is January, with an average low of -26°F and high of -7°F.

Average High and Low Temperature in Alekseyevskaya

Average High and Low Temperature in AlekseyevskayawarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-60°F-60°F-40°F-40°F-20°F-20°F0°F0°F20°F20°F40°F40°F60°F60°F80°F80°F100°F100°FJan 16-8°FJan 16-8°FJul 1473°FJul 1473°F-27°F-27°F53°F53°FMay 2056°FMay 2056°FSep 656°FSep 656°FNov 188°FNov 188°FFeb 248°FFeb 248°F35°F35°F39°F39°F-9°F-9°F-19°F-19°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 -7°F3°F21°F38°F54°F68°F72°F66°F51°F32°F10°F-4°F
Temp. -17°F-8°F9°F28°F44°F58°F63°F57°F42°F26°F2°F-12°F
Low -26°F-21°F-7°F16°F33°F46°F52°F47°F33°F17°F-7°F-22°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 Alekseyevskaya

Average Hourly Temperature in AlekseyevskayaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfrigidfrigidfreezingcoldcoolcoolcomfortablefreezing
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.

Dawson City, Canada (3,297 miles away); Norman Wells, Canada (3,462 miles); and Yellowknife, Canada (3,821 miles) are the far-away foreign places with temperatures most similar to Alekseyevskaya (view comparison).

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In Alekseyevskaya, 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 Alekseyevskaya begins around April 26 and lasts for 5.0 months, ending around September 27.

The clearest month of the year in Alekseyevskaya is July, during which on average the sky is clear, mostly clear, or partly cloudy 50% of the time.

The cloudier part of the year begins around September 27 and lasts for 7.0 months, ending around April 26.

The cloudiest month of the year in Alekseyevskaya is November, during which on average the sky is overcast or mostly cloudy 86% of the time.

Cloud Cover Categories in Alekseyevskaya

Cloud Cover Categories in AlekseyevskayaclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2452%Jul 2452%Nov 1112%Nov 1112%Apr 2632%Apr 2632%Sep 2732%Sep 2732%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 83%85%82%71%61%54%50%54%63%79%86%84%
Clearer 17%15%18%29%39%46%50%46%37%21%14%16%

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

The wetter season lasts 6.6 months, from April 10 to October 30, with a greater than 17% chance of a given day being a wet day. The month with the most wet days in Alekseyevskaya is June, with an average of 8.7 days with at least 0.04 inches of precipitation.

The drier season lasts 5.4 months, from October 30 to April 10. The month with the fewest wet days in Alekseyevskaya is February, with an average of 1.3 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. Based on this categorization, the most common form of precipitation in Alekseyevskaya changes throughout the year.

Rain alone is the most common for 6.2 months, from April 8 to October 13. The month with the most days of rain alone in Alekseyevskaya is June, with an average of 8.6 days.

Snow alone is the most common for 5.8 months, from October 13 to April 8. The month with the most days of snow alone in Alekseyevskaya is November, with an average of 3.5 days.

Daily Chance of Precipitation in Alekseyevskaya

Daily Chance of Precipitation in AlekseyevskayasnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 830%Jun 830%Jan 234%Jan 234%Apr 816%Apr 816%Oct 1321%Oct 1321%NowNowsnowrain
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 0.0d0.0d0.2d2.8d7.5d8.6d8.5d8.0d6.7d2.6d0.3d0.0d
Mixed 0.0d0.0d0.4d1.4d0.7d0.0d0.0d0.0d0.5d0.9d0.3d0.0d
Snow 1.4d1.3d1.6d1.4d0.3d0.0d0.0d0.0d0.4d3.0d3.5d2.6d
Any 1.4d1.3d2.3d5.6d8.4d8.7d8.5d8.0d7.6d6.4d4.1d2.6d

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. Alekseyevskaya experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.0 months, from April 16 to October 14, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Alekseyevskaya is July, with an average rainfall of 2.2 inches.

The rainless period of the year lasts for 6.0 months, from October 14 to April 16. The month with the least rain in Alekseyevskaya is January, with an average rainfall of 0.0 inches.

Average Monthly Rainfall in Alekseyevskaya

Average Monthly Rainfall in AlekseyevskayarainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inJul 222.3 inJul 222.3 inJan 220.0 inJan 220.0 inApr 160.5 inApr 160.5 inOct 140.5 inOct 140.5 in
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 0.0″0.0″0.1″0.5″1.5″2.0″2.2″2.1″1.4″0.5″0.1″0.0″

Snowfall

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

The snowy period of the year lasts for 7.9 months, from September 14 to May 11, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Alekseyevskaya is November, with an average snowfall of 5.1 inches.

The snowless period of the year lasts for 4.1 months, from May 11 to September 14. The least snow falls around July 19, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Alekseyevskaya

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 1.7″1.6″2.0″2.7″0.7″0.0″0.0″0.0″1.1″4.9″5.1″3.1″

The length of the day in Alekseyevskaya varies extremely over the course of the year. In 2024, the shortest day is December 21, with 6 hours, 30 minutes of daylight; the longest day is June 21, with 18 hours, 8 minutes of daylight.

Hours of Daylight and Twilight in Alekseyevskaya

Hours of Daylight and Twilight in AlekseyevskayaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2018 hr, 8 minJun 2118 hr, 8 minJun 2112 hr, 14 minSep 2212 hr, 14 minSep 226 hr, 30 minDec 216 hr, 30 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 7.3h9.4h11.9h14.4h16.7h18.0h17.3h15.2h12.8h10.3h7.9h6.6h

The earliest sunrise is at 3:43 AM on June 18, and the latest sunrise is 5 hours, 48 minutes later at 9:31 AM on December 28. The earliest sunset is at 3:57 PM on December 14, and the latest sunset is 5 hours, 55 minutes later at 9:52 PM on June 23.

Daylight saving time (DST) is not observed in Alekseyevskaya during 2024.

Sunrise & Sunset with Twilight in Alekseyevskaya

Sunrise & Sunset with Twilight in AlekseyevskayaJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 183:43 AMJun 183:43 AM9:52 PMJun 239:52 PMJun 23Dec 143:57 PMDec 143:57 PM9:31 AMDec 289:31 AMDec 28daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 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 Alekseyevskaya

Solar Elevation and Azimuth in AlekseyevskayaJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0000101010102020203030404050000010101010202020303030404050956NowNow
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 Alekseyevskaya

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.

The perceived humidity level in Alekseyevskaya, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 2% of 2% throughout.

Humidity Comfort Levels in Alekseyevskaya

Humidity Comfort Levels in AlekseyevskayaJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 150%Mar 150%Jul 194%Jul 194%NowNowdrydrycomfortablecomfortable
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 0.0d0.0d0.0d0.0d0.0d0.1d0.9d0.3d0.0d0.0d0.0d0.0d

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 Alekseyevskaya experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.9 months, from October 1 to May 31, with average wind speeds of more than 4.3 miles per hour. The windiest month of the year in Alekseyevskaya is March, with an average hourly wind speed of 5.1 miles per hour.

The calmer time of year lasts for 4.1 months, from May 31 to October 1. The calmest month of the year in Alekseyevskaya is July, with an average hourly wind speed of 3.5 miles per hour.

Average Wind Speed in Alekseyevskaya

Average Wind Speed in AlekseyevskayawindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mphMar 215.2 mphMar 215.2 mphJul 163.4 mphJul 163.4 mphOct 14.3 mphOct 14.3 mphMay 314.3 mphMay 314.3 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) 5.05.05.15.04.63.93.53.63.94.75.15.1

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

The wind is most often from the west for 4.4 months, from February 9 to June 22 and for 3.8 months, from August 4 to November 27, with a peak percentage of 46% on March 15. The wind is most often from the north for 1.4 months, from June 22 to August 4, with a peak percentage of 34% on July 6. The wind is most often from the south for 2.4 months, from November 27 to February 9, with a peak percentage of 49% on January 1.

Wind Direction in Alekseyevskaya

Wind Direction in AlekseyevskayaSWNWSJanFebMarAprMayJunJulAugSepOctNovDec0%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).

To characterize how pleasant the weather is in Alekseyevskaya 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 time of year to visit Alekseyevskaya for general outdoor tourist activities is from late June to early August, with a peak score in the third week of July.

Tourism Score in Alekseyevskaya

Tourism Score in AlekseyevskayaJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.05.00.00.0NowNowtemperaturetemperature 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 time of year to visit Alekseyevskaya for hot-weather activities is from late June to late July, with a peak score in the second week of July.

Beach/Pool Score in Alekseyevskaya

Beach/Pool Score in AlekseyevskayaJanFebMarAprMayJunJulAugSepOctNovDec002244668810101.71.70.00.0NowNow cloudscloudsprecipitationprecipitation
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 Alekseyevskaya typically lasts for 3.3 months (101 days), from around May 30 to around September 7, rarely starting before May 15 or after June 14, and rarely ending before August 23 or after September 23.

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

Time Spent in Various Temperature Bands and the Growing Season in Alekseyevskayagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 3050%May 3050%Sep 750%Sep 750%Jun 1490%Jun 1490%Aug 2390%Aug 2390%May 1510%May 1510%Sep 2310%Sep 2310%0%Nov 200%Nov 20Jul 22100%Jul 22100%NowNowfrigidcoldcoolcomfortablefreezingvery 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 Alekseyevskaya should appear around May 31, only rarely appearing before May 22 or after June 10.

Growing Degree Days in Alekseyevskaya

Growing Degree Days in AlekseyevskayaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°FMay 3190°FMay 3190°FAug 14900°FAug 14900°FDec 311,056°FDec 311,056°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 extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.1 months, from May 8 to August 10, with an average daily incident shortwave energy per square meter above 4.9 kWh. The brightest month of the year in Alekseyevskaya is June, with an average of 6.0 kWh.

The darker period of the year lasts for 4.3 months, from October 14 to February 23, with an average daily incident shortwave energy per square meter below 1.5 kWh. The darkest month of the year in Alekseyevskaya is December, with an average of 0.3 kWh.

Average Daily Incident Shortwave Solar Energy in Alekseyevskaya

Average Daily Incident Shortwave Solar Energy in AlekseyevskayabrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 186.1 kWhJun 186.1 kWhDec 230.3 kWhDec 230.3 kWhMay 84.9 kWhMay 84.9 kWhAug 104.9 kWhAug 104.9 kWhOct 141.5 kWhOct 141.5 kWhFeb 231.5 kWhFeb 231.5 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) 0.51.22.54.05.26.05.74.62.91.40.60.3

For the purposes of this report, the geographical coordinates of Alekseyevskaya are 57.850 deg latitude, 108.400 deg longitude, and 1,414 ft elevation.

The topography within 2 miles of Alekseyevskaya contains very significant variations in elevation, with a maximum elevation change of 1,138 feet and an average elevation above sea level of 1,333 feet. Within 10 miles also contains very significant variations in elevation (1,263 feet). Within 50 miles contains very significant variations in elevation (2,946 feet).

The area within 2 miles of Alekseyevskaya is covered by trees (87%) and water (11%), within 10 miles by trees (95%), and within 50 miles by trees (98%).

This report illustrates the typical weather in Alekseyevskaya, 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 is only a single weather station, Kirensk Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Alekseyevskaya.

At a distance of 22 kilometers from Alekseyevskaya, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

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

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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.