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Climate and Average Weather Year Round in Bykov Russia

In Bykov, the summers are comfortable and partly cloudy and the winters are frigid, snowy, windy, and overcast. Over the course of the year, the temperature typically varies from -3°F to 71°F and is rarely below -15°F or above 79°F.

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

Climate in Bykov

freezingcoldcoolcomfortablecoolcoldfreezingJanFebMarAprMayJunJulAugSepOctNovDecNowNow60%60%15%15%overcastclearprecipitation: 3.5 inprecipitation: 3.5 in0.8 in0.8 inmuggy: 18%muggy: 18%0%0%drydrytourism score: 4.7tourism score: 4.70.00.0
Bykov weather by month. Click on each chart for more information.

The warm season lasts for 3.8 months, from June 3 to September 26, with an average daily high temperature above 60°F. The hottest month of the year in Bykov is August, with an average high of 70°F and low of 54°F.

The cold season lasts for 3.4 months, from November 30 to March 11, with an average daily high temperature below 27°F. The coldest month of the year in Bykov is January, with an average low of -2°F and high of 17°F.

Average High and Low Temperature in Bykov

Average High and Low Temperature in BykovwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-20°F-20°F-10°F-10°F0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2916°FJan 2916°FAug 1171°FAug 1171°F-3°F-3°F55°F55°FJun 360°FJun 360°FSep 2660°FSep 2660°FNov 3027°FNov 3027°FMar 1127°FMar 1127°F41°F41°F40°F40°F11°F11°F8°F8°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 17°F19°F29°F42°F54°F63°F68°F70°F63°F50°F34°F22°F
Temp. 7°F9°F20°F33°F44°F52°F59°F62°F54°F41°F26°F14°F
Low -2°F-1°F12°F26°F36°F45°F53°F54°F44°F32°F18°F5°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 Bykov

Average Hourly Temperature in BykovJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfrigidfrigidfrigidfreezingfreezingvery coldcoldcoldcoolcomfortablevery coldfreezing
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.

Marathon, Canada (5,185 miles away) is the far-away foreign place with temperatures most similar to Bykov (view comparison).

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In Bykov, 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 Bykov begins around June 12 and lasts for 5.2 months, ending around November 20.

The clearest month of the year in Bykov is September, during which on average the sky is clear, mostly clear, or partly cloudy 57% of the time.

The cloudier part of the year begins around November 20 and lasts for 6.8 months, ending around June 12.

The cloudiest month of the year in Bykov is January, during which on average the sky is overcast or mostly cloudy 84% of the time.

Cloud Cover Categories in Bykov

Cloud Cover Categories in BykovclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 460%Oct 460%Jan 1715%Jan 1715%Jun 1238%Jun 1238%Nov 2038%Nov 2038%NowNowclearmostly clearmostly cloudyovercastpartly cloudy
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 84%77%63%59%64%61%54%50%43%43%59%76%
Clearer 16%23%37%41%36%39%46%50%57%57%41%24%

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

The wetter season lasts 7.2 months, from April 18 to November 25, with a greater than 22% chance of a given day being a wet day. The month with the most wet days in Bykov is September, with an average of 9.5 days with at least 0.04 inches of precipitation.

The drier season lasts 4.8 months, from November 25 to April 18. The month with the fewest wet days in Bykov is February, with an average of 3.7 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. Based on this categorization, the most common form of precipitation in Bykov changes throughout the year.

Rain alone is the most common for 7.1 months, from April 11 to November 13. The month with the most days of rain alone in Bykov is September, with an average of 9.4 days.

Snow alone is the most common for 4.9 months, from November 13 to April 11. The month with the most days of snow alone in Bykov is December, with an average of 4.8 days.

Daily Chance of Precipitation in Bykov

Daily Chance of Precipitation in BykovsnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Sep 2133%Sep 2133%Jan 2611%Jan 2611%Apr 1121%Apr 1121%Nov 1324%Nov 1324%NowNowsnowrainmixed
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 0.0d0.0d0.5d2.7d6.4d6.2d7.8d9.2d9.4d8.2d2.7d0.3d
Mixed 0.2d0.2d0.9d1.9d1.0d0.0d0.0d0.0d0.1d0.9d1.9d1.1d
Snow 4.3d3.4d3.8d2.0d0.2d0.0d0.0d0.0d0.0d0.3d2.6d4.8d
Any 4.5d3.7d5.2d6.5d7.6d6.3d7.8d9.2d9.5d9.4d7.2d6.2d

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. Bykov experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.1 months, from April 4 to December 8, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Bykov is August, with an average rainfall of 3.5 inches.

The rainless period of the year lasts for 3.9 months, from December 8 to April 4. The month with the least rain in Bykov is February, with an average rainfall of 0.0 inches.

Average Monthly Rainfall in Bykov

Average Monthly Rainfall in BykovrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inAug 193.5 inAug 193.5 inFeb 80.0 inFeb 80.0 inJun 111.8 inJun 111.8 inApr 40.5 inApr 40.5 inDec 80.5 inDec 80.5 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″0.9″1.8″1.8″2.8″3.5″3.4″2.9″1.4″0.3″

Snowfall

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

The snowy period of the year lasts for 7.4 months, from October 11 to May 23, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Bykov is December, with an average snowfall of 11.7 inches.

The snowless period of the year lasts for 4.6 months, from May 23 to October 11. The least snow falls around July 26, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Bykov

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 9.6″8.2″9.4″7.4″1.9″0.0″0.0″0.0″0.1″1.5″7.7″11.7″

The length of the day in Bykov varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 28 minutes of daylight; the longest day is June 21, with 15 hours, 57 minutes of daylight.

Hours of Daylight and Twilight in Bykov

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 8.9h10.3h11.9h13.6h15.1h15.9h15.5h14.2h12.5h10.9h9.3h8.5h

The earliest sunrise is at 5:32 AM on June 16, and the latest sunrise is 3 hours, 44 minutes later at 9:16 AM on December 31. The earliest sunset is at 5:39 PM on December 10, and the latest sunset is 3 hours, 51 minutes later at 9:30 PM on June 25.

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

Sunrise & Sunset with Twilight in Bykov

Sunrise & Sunset with Twilight in BykovJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 165:32 AMJun 165:32 AM9:30 PMJun 259:30 PMJun 25Dec 105:39 PMDec 105:39 PM9:16 AMDec 319:16 AMDec 31daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunsetNowNow
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 Bykov

Solar Elevation and Azimuth in BykovJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0000101010102020203030404050600000101010102020202030303040405050601966NowNow
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 Bykov

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.

Bykov experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 1.7 months, from July 11 to September 3, during which time the comfort level is muggy, oppressive, or miserable at least 4% of the time. The month with the most muggy days in Bykov is August, with 4.1 days that are muggy or worse.

The least muggy day of the year is March 18, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Bykov

Humidity Comfort Levels in BykovmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 180%Mar 180%Aug 718%Aug 718%Jul 114%Jul 114%drydrymuggymuggycomfortablecomfortable
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 0.0d0.0d0.0d0.0d0.0d0.1d2.4d4.1d0.5d0.0d0.0d0.0d

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 Bykov experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.9 months, from September 19 to May 16, with average wind speeds of more than 8.0 miles per hour. The windiest month of the year in Bykov is December, with an average hourly wind speed of 9.9 miles per hour.

The calmer time of year lasts for 4.1 months, from May 16 to September 19. The calmest month of the year in Bykov is July, with an average hourly wind speed of 6.0 miles per hour.

Average Wind Speed in Bykov

Average Wind Speed in BykovwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphDec 2610.1 mphDec 2610.1 mphJul 115.9 mphJul 115.9 mphSep 198.0 mphSep 198.0 mphMay 168.0 mphMay 168.0 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) 9.79.49.69.27.96.56.06.67.89.19.69.9

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

The wind is most often from the west for 2.9 weeks, from March 18 to April 7 and for 3.2 months, from September 5 to December 10, with a peak percentage of 52% on November 9. The wind is most often from the south for 4.9 months, from April 7 to September 5, with a peak percentage of 41% on August 4. The wind is most often from the north for 3.3 months, from December 10 to March 18, with a peak percentage of 58% on January 1.

Wind Direction in Bykov

Wind Direction in BykovNWSWNJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Bykov 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 2.5 months, from July 12 to September 28, with an average temperature above 55°F. The month of the year in Bykov with the warmest water is August, with an average temperature of 61°F.

The time of year with cooler water lasts for 4.8 months, from December 10 to May 4, with an average temperature below 37°F. The month of the year in Bykov with the coolest water is February, with an average temperature of 31°F.

Average Water Temperature in Bykov

Average Water Temperature in BykovwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°FAug 2161°FAug 2161°F31°FFeb 731°FFeb 7Jul 1255°FJul 1255°FSep 2855°FSep 2855°FDec 1037°FDec 1037°FMay 437°FMay 437°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 32°F31°F32°F35°F40°F48°F56°F61°F58°F50°F42°F36°F

To characterize how pleasant the weather is in Bykov 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 Bykov for general outdoor tourist activities is from late July to late August, with a peak score in the first week of August.

Tourism Score in Bykov

Tourism Score in BykovJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.74.70.00.0NowNowtemperaturetemperature 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 Bykov for hot-weather activities is from late July to mid August, with a peak score in the first week of August.

Beach/Pool Score in Bykov

Beach/Pool Score in BykovJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.70.70.00.0NowNowtemperaturetemperature 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 Bykov typically lasts for 4.0 months (122 days), from around May 24 to around September 23, rarely starting before May 6 or after June 15, and rarely ending before September 7 or after October 9.

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

Time Spent in Various Temperature Bands and the Growing Season in Bykovgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 2450%May 2450%Sep 2350%Sep 2350%Jun 1590%Jun 1590%Sep 790%Sep 790%May 610%May 610%Oct 910%Oct 910%0%Feb 250%Feb 25Aug 3100%Aug 3100%NowNowfrigidfreezingcoldcoolvery coldcomfortablewarm
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 Bykov should appear around June 6, only rarely appearing before May 28 or after June 19.

Growing Degree Days in Bykov

Growing Degree Days in BykovJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F200°F200°F400°F400°F600°F600°F800°F800°F1,000°F1,000°F1,200°F1,200°FJun 690°FJun 690°FSep 2900°FSep 2900°FDec 311,092°FDec 311,092°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 extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.8 months, from April 26 to August 19, with an average daily incident shortwave energy per square meter above 4.9 kWh. The brightest month of the year in Bykov is June, with an average of 5.8 kWh.

The darker period of the year lasts for 3.4 months, from November 1 to February 12, with an average daily incident shortwave energy per square meter below 1.9 kWh. The darkest month of the year in Bykov is December, with an average of 0.9 kWh.

Average Daily Incident Shortwave Solar Energy in Bykov

Average Daily Incident Shortwave Solar Energy in BykovbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 235.9 kWhJun 235.9 kWhDec 190.9 kWhDec 190.9 kWhApr 264.9 kWhApr 264.9 kWhAug 194.9 kWhAug 194.9 kWhNov 11.9 kWhNov 11.9 kWhFeb 121.9 kWhFeb 121.9 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) 1.22.03.44.65.35.85.75.04.02.71.40.9

For the purposes of this report, the geographical coordinates of Bykov are 47.321 deg latitude, 142.562 deg longitude, and 151 ft elevation.

The topography within 2 miles of Bykov contains very significant variations in elevation, with a maximum elevation change of 1,558 feet and an average elevation above sea level of 458 feet. Within 10 miles contains very significant variations in elevation (2,352 feet). Within 50 miles contains large variations in elevation (3,389 feet).

The area within 2 miles of Bykov is covered by trees (100%), within 10 miles by trees (97%), and within 50 miles by water (54%) and trees (43%).

This report illustrates the typical weather in Bykov, 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, Yuzhno-Sakhalinsk Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Bykov.

At a distance of 50 kilometers from Bykov, 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 Bykov 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.