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Climate and Average Weather Year Round in Fountain Valley California, United States

In Fountain Valley, the summers are short, warm, arid, and clear and the winters are long, cool, and partly cloudy. Over the course of the year, the temperature typically varies from 47°F to 80°F and is rarely below 40°F or above 89°F.

Based on the tourism score, the best time of year to visit Fountain Valley for warm-weather activities is from early June to early October.

Climate in Fountain Valley

comfortablewarmcomfortableJanFebMarAprMayJunJulAugSepOctNovDecNowNow91%91%58%58%clearovercastprecipitation: 3.0 inprecipitation: 3.0 in0.0 in0.0 inmuggy: 17%muggy: 17%0%0%drydrytourism score: 9.0tourism score: 9.03.13.1
Fountain Valley weather by month. Click on each chart for more information.

The warm season lasts for 2.8 months, from July 9 to October 3, with an average daily high temperature above 78°F. The hottest month of the year in Fountain Valley is August, with an average high of 80°F and low of 65°F.

The cool season lasts for 4.1 months, from November 28 to April 1, with an average daily high temperature below 69°F. The coldest month of the year in Fountain Valley is December, with an average low of 47°F and high of 67°F.

Average High and Low Temperature in Fountain Valley

Average High and Low Temperature in Fountain ValleywarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FDec 2666°FDec 2666°FAug 2480°FAug 2480°F47°F47°F66°F66°FJul 978°FJul 978°FOct 378°FOct 378°FApr 169°FApr 169°F64°F64°F62°F62°F53°F53°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 67°F67°F68°F70°F71°F74°F78°F80°F79°F76°F71°F67°F
Temp. 56°F57°F59°F62°F64°F67°F70°F72°F71°F67°F61°F56°F
Low 47°F49°F52°F54°F58°F62°F65°F65°F64°F59°F52°F47°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 Fountain Valley

Average Hourly Temperature in Fountain ValleyJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowcoldcoldcoldcoolcoolcoolcoolcomfortablewarmcold
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.

Port Elizabeth, Eastern Cape, South Africa (10,365 miles away) is the far-away foreign place with temperatures most similar to Fountain Valley (view comparison).

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In Fountain Valley, 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 Fountain Valley begins around April 23 and lasts for 6.3 months, ending around November 3.

The clearest month of the year in Fountain Valley is September, during which on average the sky is clear, mostly clear, or partly cloudy 90% of the time.

The cloudier part of the year begins around November 3 and lasts for 5.7 months, ending around April 23.

The cloudiest month of the year in Fountain Valley is February, during which on average the sky is overcast or mostly cloudy 40% of the time.

Cloud Cover Categories in Fountain Valley

Cloud Cover Categories in Fountain ValleyclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Sep 691%Sep 691%Feb 2058%Feb 2058%Apr 2375%Apr 2375%Nov 375%Nov 375%NowNowclearovercastmostly clearpartly 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 37%40%34%26%21%12%11%10%10%19%29%37%
Clearer 63%60%66%74%79%88%89%90%90%81%71%63%

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

The wetter season lasts 4.3 months, from November 20 to March 30, with a greater than 10% chance of a given day being a wet day. The month with the most wet days in Fountain Valley is February, with an average of 5.5 days with at least 0.04 inches of precipitation.

The drier season lasts 7.7 months, from March 30 to November 20. The month with the fewest wet days in Fountain Valley is July, with an average of 0.1 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 Fountain Valley is February, with an average of 5.5 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 20% on February 19.

Daily Chance of Precipitation in Fountain Valley

Daily Chance of Precipitation in Fountain ValleywetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 1920%Feb 1920%Jul 10%Jul 10%Nov 2010%Nov 2010%Mar 3010%Mar 3010%NowNowrain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 4.9d5.5d4.3d2.1d0.7d0.1d0.1d0.2d0.5d1.6d2.8d4.5d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Fountain Valley experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.0 months, from October 21 to April 22, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Fountain Valley is February, with an average rainfall of 3.0 inches.

The rainless period of the year lasts for 6.0 months, from April 22 to October 21. The month with the least rain in Fountain Valley is July, with an average rainfall of 0.0 inches.

Average Monthly Rainfall in Fountain Valley

Average Monthly Rainfall in Fountain ValleyrainrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 inFeb 193.0 inFeb 193.0 inJul 50.0 inJul 50.0 inOct 210.5 inOct 210.5 inApr 220.5 inApr 220.5 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 2.4″3.0″1.8″0.7″0.2″0.0″0.0″0.0″0.2″0.4″0.9″2.1″

The length of the day in Fountain Valley varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 55 minutes of daylight; the longest day is June 20, with 14 hours, 24 minutes of daylight.

Hours of Daylight and Twilight in Fountain Valley

Hours of Daylight and Twilight in Fountain ValleyJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 1912 hr, 7 minMar 1914 hr, 24 minJun 2014 hr, 24 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 55 minDec 219 hr, 55 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 10.2h11.0h12.0h13.1h13.9h14.4h14.1h13.3h12.3h11.3h10.4h10.0h

The earliest sunrise is at 5:40 AM on June 11, and the latest sunrise is 1 hour, 32 minutes later at 7:12 AM on November 2. The earliest sunset is at 4:43 PM on December 4, and the latest sunset is 3 hours, 23 minutes later at 8:06 PM on June 28.

Daylight saving time (DST) is observed in Fountain Valley 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 Fountain Valley

Sunrise & Sunset with Twilight and Daylight Saving Time in Fountain ValleyJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 115:40 AMJun 115:40 AM8:06 PMJun 288:06 PMJun 28Dec 44:43 PMDec 44:43 PM7:12 AMNov 27:12 AMNov 2Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
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 Fountain Valley

Solar Elevation and Azimuth in Fountain ValleyJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00010101010202020303030404040505060607000010101020202020303030404040505060703380NowNow
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 Fountain Valley

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.

Fountain Valley experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.3 months, from June 30 to October 7, 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 Fountain Valley is August, with 5.2 days that are muggy or worse.

The least muggy day of the year is February 25, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Fountain Valley

Humidity Comfort Levels in Fountain ValleymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 250%Feb 250%Aug 2017%Aug 2017%Jun 304%Jun 304%Oct 74%Oct 74%NowNowmuggymuggyhumidhumidcomfortablecomfortabledrydry
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 0.0d0.0d0.0d0.0d0.1d0.4d3.4d5.2d3.5d0.7d0.0d0.0d

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 Fountain Valley experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.3 months, from November 9 to May 18, with average wind speeds of more than 6.4 miles per hour. The windiest month of the year in Fountain Valley is December, with an average hourly wind speed of 7.6 miles per hour.

The calmer time of year lasts for 5.7 months, from May 18 to November 9. The calmest month of the year in Fountain Valley is August, with an average hourly wind speed of 5.2 miles per hour.

Average Wind Speed in Fountain Valley

Average Wind Speed in Fountain ValleywindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphDec 297.8 mphDec 297.8 mphAug 225.1 mphAug 225.1 mphMay 186.4 mphMay 186.4 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 7.57.47.17.06.55.85.35.25.25.86.77.6

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

The wind is most often from the west for 9.9 months, from January 28 to November 25, with a peak percentage of 64% on May 21. The wind is most often from the east for 2.1 months, from November 25 to January 28, with a peak percentage of 35% on January 1.

Wind Direction in Fountain Valley

Wind Direction in Fountain ValleyEWEJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Fountain Valley 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 some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.1 months, from July 6 to October 10, with an average temperature above 67°F. The month of the year in Fountain Valley with the warmest water is August, with an average temperature of 69°F.

The time of year with cooler water lasts for 4.6 months, from December 9 to April 26, with an average temperature below 61°F. The month of the year in Fountain Valley with the coolest water is February, with an average temperature of 59°F.

Average Water Temperature in Fountain Valley

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 59°F59°F59°F60°F62°F65°F68°F69°F68°F66°F63°F60°F

To characterize how pleasant the weather is in Fountain Valley 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 Fountain Valley for general outdoor tourist activities is from early June to early October, with a peak score in the last week of July.

Tourism Score in Fountain Valley

Tourism Score in Fountain Valleybest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810109.09.03.13.1NowNowtemperaturetemperature 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 Fountain Valley for hot-weather activities is from mid July to mid September, with a peak score in the third week of August.

Beach/Pool Score in Fountain Valley

Beach/Pool Score in Fountain Valleybest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.85.80.40.4temperaturetemperature 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).

Temperatures in Fountain Valley are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in Fountain Valley

Time Spent in Various Temperature Bands and the Growing Season in Fountain ValleyJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 15100%Jan 1599%Dec 2699%Dec 26Jun 26100%Jun 26100%NowNowcoldcoolcomfortablewarmhotvery 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.

Growing Degree Days in Fountain Valley

Growing Degree Days in Fountain ValleyJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°FJan 1390°FJan 1390°FApr 15900°FApr 15900°FJun 181,800°FJun 181,800°FDec 314,986°FDec 314,986°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 3.9 months, from April 24 to August 20, with an average daily incident shortwave energy per square meter above 7.3 kWh. The brightest month of the year in Fountain Valley is June, with an average of 8.4 kWh.

The darker period of the year lasts for 3.2 months, from November 5 to February 11, with an average daily incident shortwave energy per square meter below 4.1 kWh. The darkest month of the year in Fountain Valley is December, with an average of 3.1 kWh.

Average Daily Incident Shortwave Solar Energy in Fountain Valley

Average Daily Incident Shortwave Solar Energy in Fountain ValleybrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 208.4 kWhJun 208.4 kWhDec 253.0 kWhDec 253.0 kWhApr 247.3 kWhApr 247.3 kWhAug 207.3 kWhAug 207.3 kWhNov 54.1 kWhNov 54.1 kWhFeb 114.1 kWhFeb 114.1 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 3.34.25.77.07.98.48.17.46.35.03.73.1

For the purposes of this report, the geographical coordinates of Fountain Valley are 33.709 deg latitude, -117.954 deg longitude, and 30 ft elevation.

The topography within 2 miles of Fountain Valley is essentially flat, with a maximum elevation change of 52 feet and an average elevation above sea level of 29 feet. Within 10 miles is essentially flat (709 feet). Within 50 miles contains significant variations in elevation (10,062 feet).

The area within 2 miles of Fountain Valley is covered by artificial surfaces (92%), within 10 miles by artificial surfaces (70%) and water (25%), and within 50 miles by water (42%) and shrubs (26%).

This report illustrates the typical weather in Fountain Valley, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Fountain Valley.

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