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Climate and Average Weather Year Round in Traiskirchen Austria

In Traiskirchen, the summers are warm; the winters are very cold, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 27°F to 78°F and is rarely below 14°F or above 89°F.

Based on the tourism score, the best time of year to visit Traiskirchen for warm-weather activities is from mid June to early September.

Climate in Traiskirchen

very coldcoldcoolcomfortablewarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow65%65%39%39%clearovercastprecipitation: 2.5 inprecipitation: 2.5 in0.8 in0.8 inmuggy: 5%muggy: 5%0%0%drydrytourism score: 7.1tourism score: 7.10.10.1
Traiskirchen weather by month. Click on each chart for more information.

The warm season lasts for 3.4 months, from May 27 to September 8, with an average daily high temperature above 70°F. The hottest month of the year in Traiskirchen is July, with an average high of 78°F and low of 59°F.

The cold season lasts for 3.5 months, from November 18 to March 3, with an average daily high temperature below 45°F. The coldest month of the year in Traiskirchen is January, with an average low of 28°F and high of 37°F.

Average High and Low Temperature in Traiskirchen

Average High and Low Temperature in TraiskirchenwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1336°FJan 1336°FAug 378°FAug 378°F27°F27°F60°F60°FMay 2770°FMay 2770°FSep 870°FSep 870°FNov 1845°FNov 1845°FMar 345°FMar 345°F52°F52°F54°F54°F36°F36°F32°F32°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 37°F41°F50°F59°F68°F73°F78°F76°F68°F57°F46°F38°F
Temp. 32°F35°F42°F51°F59°F65°F69°F68°F60°F51°F41°F34°F
Low 28°F29°F35°F42°F50°F56°F59°F58°F52°F44°F36°F30°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 Traiskirchen

Average Hourly Temperature in TraiskirchenJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingvery coldvery coldcoldcoldcoolcomfortablewarmfreezingcomfortablefreezing
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.

Boone, North Carolina, United States (4,747 miles away) is the far-away foreign place with temperatures most similar to Traiskirchen (view comparison).

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In Traiskirchen, 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 Traiskirchen begins around June 1 and lasts for 3.9 months, ending around September 27.

The clearest month of the year in Traiskirchen is July, during which on average the sky is clear, mostly clear, or partly cloudy 64% of the time.

The cloudier part of the year begins around September 27 and lasts for 8.1 months, ending around June 1.

The cloudiest month of the year in Traiskirchen is November, during which on average the sky is overcast or mostly cloudy 59% of the time.

Cloud Cover Categories in Traiskirchen

Cloud Cover Categories in TraiskirchenclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1765%Jul 1765%Nov 1839%Nov 1839%Jun 152%Jun 152%Sep 2752%Sep 2752%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 54%55%55%52%50%44%36%38%45%51%59%58%
Clearer 46%45%45%48%50%56%64%62%55%49%41%42%

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

The wetter season lasts 4.8 months, from April 28 to September 22, with a greater than 24% chance of a given day being a wet day. The month with the most wet days in Traiskirchen is June, with an average of 9.7 days with at least 0.04 inches of precipitation.

The drier season lasts 7.2 months, from September 22 to April 28. The month with the fewest wet days in Traiskirchen is January, with an average of 4.7 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. The month with the most days of rain alone in Traiskirchen is June, with an average of 9.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 34% on June 10.

Daily Chance of Precipitation in Traiskirchen

Daily Chance of Precipitation in TraiskirchenwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 1034%Jun 1034%Jan 2414%Jan 2414%Apr 2824%Apr 2824%Sep 2224%Sep 2224%NowNowrainsnowmixed
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 3.0d3.3d4.9d6.2d9.3d9.7d9.3d9.1d7.6d5.7d4.9d4.1d
Mixed 0.5d0.7d0.5d0.1d0.0d0.0d0.0d0.0d0.0d0.1d0.4d0.6d
Snow 1.1d0.8d0.3d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.4d1.0d
Any 4.7d4.7d5.7d6.4d9.3d9.7d9.3d9.1d7.6d5.8d5.8d5.7d

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. Traiskirchen experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Traiskirchen. The month with the most rain in Traiskirchen is July, with an average rainfall of 2.5 inches.

The month with the least rain in Traiskirchen is January, with an average rainfall of 0.6 inches.

Average Monthly Rainfall in Traiskirchen

Average Monthly Rainfall in TraiskirchenJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inJul 242.5 inJul 242.5 inJan 180.6 inJan 180.6 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.6″0.7″1.0″1.3″2.2″2.5″2.5″2.4″2.1″1.4″1.1″0.8″

Snowfall

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

The snowy period of the year lasts for 4.0 months, from November 12 to March 13, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Traiskirchen is January, with an average snowfall of 2.4 inches.

The snowless period of the year lasts for 8.0 months, from March 13 to November 12. The least snow falls around July 17, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Traiskirchen

Average Monthly Snowfall in TraiskirchensnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 inJan 72.5 inJan 72.5 inJul 170.0 inJul 170.0 inNov 121.0 inNov 121.0 inMar 131.0 inMar 131.0 inNowNow
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 2.4″2.0″0.9″0.1″0.0″0.0″0.0″0.0″0.0″0.2″1.1″2.0″

The length of the day in Traiskirchen varies extremely over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 22 minutes of daylight; the longest day is June 20, with 16 hours, 3 minutes of daylight.

Hours of Daylight and Twilight in Traiskirchen

Hours of Daylight and Twilight in TraiskirchenJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2016 hr, 3 minJun 2016 hr, 3 minJun 2012 hr, 10 minSep 2212 hr, 10 minSep 228 hr, 22 minDec 218 hr, 22 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 8.9h10.2h11.9h13.7h15.2h16.0h15.6h14.2h12.5h10.8h9.3h8.4h

The earliest sunrise is at 4:54 AM on June 16, and the latest sunrise is 2 hours, 50 minutes later at 7:44 AM on January 2. The earliest sunset is at 4:01 PM on December 10, and the latest sunset is 4 hours, 57 minutes later at 8:58 PM on June 25.

Daylight saving time (DST) is observed in Traiskirchen during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

Sunrise & Sunset with Twilight and Daylight Saving Time in Traiskirchen

Sunrise & Sunset with Twilight and Daylight Saving Time in TraiskirchenJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 164:54 AMJun 164:54 AM8:58 PMJun 258:58 PMJun 25Dec 104:01 PMDec 104:01 PM7:44 AMJan 27:44 AMJan 2Mar 31DSTMar 31DSTDSTOct 27DSTOct 27daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Traiskirchen

Solar Elevation and Azimuth in TraiskirchenJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0000101010202030304040506000010101010202020303040405050601965NowNow
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 Traiskirchen

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 Traiskirchen, 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 Traiskirchen

Humidity Comfort Levels in TraiskirchenJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 30%Mar 30%Jul 265%Jul 265%NowNowhumidhumidcomfortablecomfortabledrydry
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 0.0d0.0d0.0d0.0d0.0d0.6d1.2d0.7d0.1d0.0d0.0d0.0d

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

The windier part of the year lasts for 4.9 months, from November 29 to April 25, with average wind speeds of more than 8.6 miles per hour. The windiest month of the year in Traiskirchen is February, with an average hourly wind speed of 10.0 miles per hour.

The calmer time of year lasts for 7.1 months, from April 25 to November 29. The calmest month of the year in Traiskirchen is August, with an average hourly wind speed of 7.4 miles per hour.

Average Wind Speed in Traiskirchen

Average Wind Speed in TraiskirchenwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphFeb 510.1 mphFeb 510.1 mphAug 107.2 mphAug 107.2 mphNov 298.6 mphNov 298.6 mphApr 258.6 mphApr 258.6 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) 9.410.09.58.98.48.07.77.47.88.18.69.0

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

The wind is most often from the north for 4.5 months, from March 30 to August 15, with a peak percentage of 38% on July 22. The wind is most often from the west for 1.1 months, from August 15 to September 18 and for 4.1 months, from November 26 to March 30, with a peak percentage of 35% on September 2. The wind is most often from the south for 2.3 months, from September 18 to November 26, with a peak percentage of 41% on October 29.

Wind Direction in Traiskirchen

Wind Direction in TraiskirchenWNWSWJanFebMarAprMayJunJulAugSepOctNovDec0%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 Traiskirchen 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 Traiskirchen for general outdoor tourist activities is from mid June to early September, with a peak score in the second week of August.

Tourism Score in Traiskirchen

Tourism Score in Traiskirchenbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.17.10.10.1NowNowtemperaturetemperature 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 time of year to visit Traiskirchen for hot-weather activities is from early July to mid August, with a peak score in the first week of August.

Beach/Pool Score in Traiskirchen

Beach/Pool Score in TraiskirchenJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.45.40.00.0NowNowtemperaturetemperature 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 Traiskirchen typically lasts for 6.5 months (200 days), from around April 8 to around October 25, rarely starting before March 17 or after April 27, and rarely ending before October 7 or after November 13.

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

Time Spent in Various Temperature Bands and the Growing Season in Traiskirchengrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 850%Apr 850%Oct 2550%Oct 2590%Apr 2790%Apr 2790%Oct 790%Oct 710%Mar 1710%Mar 1710%Nov 1310%Nov 130%Dec 270%Dec 27Jul 16100%Jul 16100%freezingvery coldcoldcoolcomfortablewarmfrigid
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 Traiskirchen should appear around April 14, only rarely appearing before March 30 or after April 28.

Growing Degree Days in Traiskirchen

Growing Degree Days in TraiskirchenJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FApr 1490°FApr 1490°FJun 28900°FJun 28900°FAug 161,800°FAug 161,800°FDec 312,504°FDec 312,504°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 3.6 months, from April 30 to August 17, with an average daily incident shortwave energy per square meter above 5.6 kWh. The brightest month of the year in Traiskirchen is June, with an average of 6.6 kWh.

The darker period of the year lasts for 3.6 months, from October 28 to February 15, with an average daily incident shortwave energy per square meter below 2.2 kWh. The darkest month of the year in Traiskirchen is December, with an average of 1.1 kWh.

Average Daily Incident Shortwave Solar Energy in Traiskirchen

Average Daily Incident Shortwave Solar Energy in TraiskirchenbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 26.7 kWhJul 26.7 kWhDec 211.1 kWhDec 211.1 kWhApr 305.6 kWhApr 305.6 kWhAug 175.6 kWhAug 175.6 kWhOct 282.2 kWhOct 282.2 kWhFeb 152.2 kWhFeb 152.2 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) 1.42.23.54.96.06.66.55.64.22.71.51.1

For the purposes of this report, the geographical coordinates of Traiskirchen are 48.015 deg latitude, 16.293 deg longitude, and 669 ft elevation.

The topography within 2 miles of Traiskirchen contains only modest variations in elevation, with a maximum elevation change of 295 feet and an average elevation above sea level of 668 feet. Within 10 miles contains only modest variations in elevation (2,211 feet). Within 50 miles contains large variations in elevation (6,414 feet).

The area within 2 miles of Traiskirchen is covered by cropland (60%) and artificial surfaces (35%), within 10 miles by cropland (47%) and trees (25%), and within 50 miles by cropland (46%) and trees (38%).

This report illustrates the typical weather in Traiskirchen, 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 Traiskirchen.

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