1. WeatherSpark.com
  2. Canada
  3. Manitoba

Climate and Average Weather Year Round in Winnipeg Manitoba, Canada

In Winnipeg, the summers are long and warm; the winters are frigid, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from -2°F to 80°F and is rarely below -21°F or above 89°F.

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

Climate in Winnipeg

frigidfreezingcoolwarmcoolcoldfreezingJanFebMarAprMayJunJulAugSepOctNovDecNowNow72%72%34%34%clearovercastprecipitation: 3.1 inprecipitation: 3.1 in0.3 in0.3 inmuggy: 10%muggy: 10%0%0%drydrytourism score: 7.3tourism score: 7.30.00.0
Winnipeg weather by month. Click on each chart for more information.

The warm season lasts for 4.0 months, from May 16 to September 17, with an average daily high temperature above 67°F. The hottest month of the year in Winnipeg is July, with an average high of 79°F and low of 61°F.

The cold season lasts for 3.3 months, from November 26 to March 4, with an average daily high temperature below 26°F. The coldest month of the year in Winnipeg is January, with an average low of -1°F and high of 14°F.

Average High and Low Temperature in Winnipeg

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 14°F19°F33°F52°F66°F75°F79°F78°F67°F51°F33°F17°F
Temp. 5°F11°F24°F41°F55°F65°F70°F68°F58°F43°F26°F10°F
Low -1°F4°F18°F33°F45°F56°F61°F59°F49°F36°F20°F4°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 Winnipeg

Average Hourly Temperature in WinnipegJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfrigidfrigidfreezingcoldcoldcoolcomfortablecomfortablewarmfreezingvery 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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Novotroitsk, Russia (5,311 miles away); Nagornyy, Russia (5,348 miles); and Ivanovka, Russia (5,303 miles) are the far-away foreign places with temperatures most similar to Winnipeg (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Winnipeg to another city:

Map

In Winnipeg, 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 Winnipeg begins around May 22 and lasts for 4.6 months, ending around October 10.

The clearest month of the year in Winnipeg is July, during which on average the sky is clear, mostly clear, or partly cloudy 68% of the time.

The cloudier part of the year begins around October 10 and lasts for 7.4 months, ending around May 22.

The cloudiest month of the year in Winnipeg is February, during which on average the sky is overcast or mostly cloudy 66% of the time.

Cloud Cover Categories in Winnipeg

Cloud Cover Categories in WinnipegclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2972%Jul 2972%Feb 1334%Feb 1334%May 2252%May 2252%Oct 1053%Oct 1053%NowNowclearpartly cloudymostly cloudyovercastmostly clear
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 64%66%60%52%48%42%32%32%41%49%57%62%
Clearer 36%34%40%48%52%58%68%68%59%51%43%38%

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

The wetter season lasts 3.9 months, from May 3 to August 31, with a greater than 21% chance of a given day being a wet day. The month with the most wet days in Winnipeg is June, with an average of 10.4 days with at least 0.04 inches of precipitation.

The drier season lasts 8.1 months, from August 31 to May 3. The month with the fewest wet days in Winnipeg is February, with an average of 2.0 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 Winnipeg changes throughout the year.

Rain alone is the most common for 8.2 months, from March 11 to November 16. The month with the most days of rain alone in Winnipeg is June, with an average of 10.4 days.

Snow alone is the most common for 3.8 months, from November 16 to March 11. The month with the most days of snow alone in Winnipeg is December, with an average of 2.5 days.

Daily Chance of Precipitation in Winnipeg

Daily Chance of Precipitation in WinnipegsnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 2037%Jun 2037%Feb 26%Feb 26%Mar 1110%Mar 1110%Nov 1610%Nov 1610%May 321%May 321%Aug 3121%Aug 3121%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 0.0d0.3d1.7d3.7d8.0d10.4d8.9d7.6d5.9d4.7d1.5d0.1d
Mixed 0.1d0.2d0.5d0.5d0.2d0.0d0.0d0.0d0.0d0.3d0.4d0.2d
Snow 2.2d1.5d1.2d0.3d0.1d0.0d0.0d0.0d0.0d0.3d1.3d2.5d
Any 2.3d2.0d3.4d4.5d8.2d10.4d8.9d7.6d6.0d5.3d3.2d2.8d

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. Winnipeg experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.7 months, from March 19 to November 10, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Winnipeg is June, with an average rainfall of 3.0 inches.

The rainless period of the year lasts for 4.3 months, from November 10 to March 19. The month with the least rain in Winnipeg is January, with an average rainfall of 0.0 inches.

Average Monthly Rainfall in Winnipeg

Average Monthly Rainfall in WinnipegrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inJun 203.1 inJun 203.1 inJan 90.0 inJan 90.0 inMar 190.5 inMar 190.5 inNov 100.5 inNov 100.5 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″0.1″0.5″1.0″2.2″3.0″2.4″2.1″1.6″1.1″0.4″0.0″

Snowfall

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

The snowy period of the year lasts for 6.3 months, from October 18 to April 26, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Winnipeg is December, with an average snowfall of 3.2 inches.

The snowless period of the year lasts for 5.7 months, from April 26 to October 18. The least snow falls around July 27, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Winnipeg

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 2.9″2.2″2.2″1.3″0.5″0.0″0.0″0.0″0.0″0.9″2.7″3.2″

The length of the day in Winnipeg varies extremely over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 5 minutes of daylight; the longest day is June 20, with 16 hours, 21 minutes of daylight.

Hours of Daylight and Twilight in Winnipeg

Hours of Daylight and Twilight in WinnipegJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 9 minMar 1912 hr, 9 minMar 1916 hr, 21 minJun 2016 hr, 21 minJun 2012 hr, 13 minSep 2212 hr, 13 minSep 228 hr, 5 minDec 218 hr, 5 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 8.7h10.1h12.0h13.8h15.5h16.3h15.8h14.4h12.6h10.7h9.0h8.2h

The earliest sunrise is at 5:19 AM on June 15, and the latest sunrise is 3 hours, 7 minutes later at 8:26 AM on December 30. The earliest sunset is at 4:27 PM on December 11, and the latest sunset is 5 hours, 14 minutes later at 9:41 PM on June 24.

Daylight saving time (DST) is observed in Winnipeg 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 Winnipeg

Sunrise & Sunset with Twilight and Daylight Saving Time in WinnipegJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:19 AMJun 155:19 AM9:41 PMJun 249:41 PMJun 24Dec 114:27 PMDec 114:27 PM8:26 AMDec 308:26 AMDec 30Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Winnipeg

Solar Elevation and Azimuth in WinnipegJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0001010101020203030404050000101010202020303040405050601764NowNow
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 Winnipeg

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.

Winnipeg experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.8 months, from June 13 to September 6, during which time the comfort level is muggy, oppressive, or miserable at least 3% of the time. The month with the most muggy days in Winnipeg is July, with 2.9 days that are muggy or worse.

The least muggy day of the year is March 2, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Winnipeg

Humidity Comfort Levels in WinnipegmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 20%Mar 20%Jul 2410%Jul 2410%Jun 133%Jun 133%Sep 63%Sep 63%NowNowcomfortablecomfortabledrydrymuggymuggy
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 0.0d0.0d0.0d0.0d0.0d1.0d2.9d2.0d0.4d0.0d0.0d0.0d

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

The windier part of the year lasts for 8.6 months, from September 11 to May 31, with average wind speeds of more than 10.5 miles per hour. The windiest month of the year in Winnipeg is April, with an average hourly wind speed of 11.7 miles per hour.

The calmer time of year lasts for 3.4 months, from May 31 to September 11. The calmest month of the year in Winnipeg is July, with an average hourly wind speed of 9.4 miles per hour.

Average Wind Speed in Winnipeg

Average Wind Speed in WinnipegwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphMar 3111.9 mphMar 3111.9 mphJul 269.1 mphJul 269.1 mphSep 1110.5 mphSep 1110.5 mphMay 3110.5 mphMay 3110.5 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 10.811.011.611.711.210.19.49.610.611.211.010.6

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

The wind is most often from the south for 1.9 weeks, from June 12 to June 25; for 1.7 months, from July 24 to September 14; for 4.0 days, from October 17 to October 21; and for 3.1 weeks, from October 23 to November 14, with a peak percentage of 35% on August 18. The wind is most often from the north for 4.1 weeks, from June 25 to July 24; for 1.1 months, from September 14 to October 17; for 2.0 days, from October 21 to October 23; and for 6.9 months, from November 14 to June 12, with a peak percentage of 32% on October 5.

Wind Direction in Winnipeg

Wind Direction in WinnipegNSNSNSNJanFebMarAprMayJunJulAugSepOctNovDec0%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 Winnipeg 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 Winnipeg for general outdoor tourist activities is from late June to late August, with a peak score in the last week of July.

Tourism Score in Winnipeg

Tourism Score in Winnipegbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.37.30.00.0NowNowtemperaturetemperature 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 Winnipeg for hot-weather activities is from early July to early August, with a peak score in the last week of July.

Beach/Pool Score in Winnipeg

Beach/Pool Score in WinnipegJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.44.40.00.0NowNowtemperaturetemperature 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 Winnipeg typically lasts for 4.8 months (148 days), from around May 9 to around October 3, rarely starting before April 20 or after May 26, and rarely ending before September 14 or after October 23.

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

Time Spent in Various Temperature Bands and the Growing Season in Winnipeggrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 950%May 950%Oct 350%Oct 350%May 2690%May 2690%Sep 1490%Sep 1490%Apr 2010%Apr 2010%Oct 2310%Oct 2310%Jul 12100%Jul 12100%NowNowfrigidfreezingcoolcomfortablewarmcoldvery 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 Winnipeg should appear around May 4, only rarely appearing before April 22 or after May 21.

Growing Degree Days in Winnipeg

Growing Degree Days in WinnipegJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FMay 490°FMay 490°FJul 7900°FJul 7900°FAug 221,800°FAug 221,800°FDec 312,273°FDec 312,273°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 3.6 months, from April 30 to August 19, with an average daily incident shortwave energy per square meter above 5.6 kWh. The brightest month of the year in Winnipeg is July, with an average of 6.7 kWh.

The darker period of the year lasts for 3.6 months, from October 24 to February 13, with an average daily incident shortwave energy per square meter below 2.2 kWh. The darkest month of the year in Winnipeg is December, with an average of 1.0 kWh.

Average Daily Incident Shortwave Solar Energy in Winnipeg

Average Daily Incident Shortwave Solar Energy in WinnipegbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 136.8 kWhJul 136.8 kWhDec 181.0 kWhDec 181.0 kWhApr 305.6 kWhApr 305.6 kWhAug 195.6 kWhAug 195.6 kWhOct 242.2 kWhOct 242.2 kWhFeb 132.2 kWhFeb 132.2 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) 1.32.33.65.16.16.66.75.84.22.61.51.0

For the purposes of this report, the geographical coordinates of Winnipeg are 49.884 deg latitude, -97.147 deg longitude, and 755 ft elevation.

The topography within 2 miles of Winnipeg is essentially flat, with a maximum elevation change of 39 feet and an average elevation above sea level of 749 feet. Within 10 miles is also essentially flat (85 feet). Within 50 miles is essentially flat (397 feet).

The area within 2 miles of Winnipeg is covered by artificial surfaces (100%), within 10 miles by cropland (61%) and artificial surfaces (28%), and within 50 miles by cropland (63%) and trees (21%).

This report illustrates the typical weather in Winnipeg, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Winnipeg.

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

The stations contributing to this reconstruction are:

Sources mapCXWN, 50%1 mi, 0 ftCXWI, 47%1 mi, -10 ftCYWG, 3%5 mi, 26 ft© OpenStreetMap contributors

To get a sense of how much these sources agree with each other, you can view a comparison of Winnipeg 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.