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Climate and Average Weather Year Round at Sarzana / Luni Italy

At Sarzana / Luni, the summers are short, warm, and mostly clear and the winters are long, cold, and partly cloudy. Over the course of the year, the temperature typically varies from 38°F to 84°F and is rarely below 30°F or above 90°F.

Based on the beach/pool score, the best time of year to visit Sarzana / Luni for hot-weather activities is from late June to late August.

Climate at Sarzana / Luni

coldcoolwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow82%82%47%47%clearovercastprecipitation: 4.2 inprecipitation: 4.2 in1.0 in1.0 inmuggy: 27%muggy: 27%0%0%drydrybeach/pool score: 8.3beach/pool score: 8.30.00.0
Sarzana / Luni weather by month. Click on each chart for more information.

The warm season lasts for 2.8 months, from June 16 to September 10, with an average daily high temperature above 78°F. The hottest month of the year at Sarzana / Luni is July, with an average high of 83°F and low of 67°F.

The cool season lasts for 3.9 months, from November 19 to March 15, with an average daily high temperature below 58°F. The coldest month of the year at Sarzana / Luni is January, with an average low of 39°F and high of 51°F.

Average High and Low Temperature at Sarzana / Luni

Average High and Low Temperature at Sarzana / LuniwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 752°FFeb 752°FAug 484°FAug 484°F38°F38°F67°F67°FJun 1678°FJun 1678°FSep 1078°FSep 1078°FNov 1958°FNov 1958°FMar 1558°FMar 1558°F62°F62°F61°F61°F46°F46°F43°F43°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 51°F53°F58°F63°F71°F78°F83°F83°F76°F68°F59°F53°F
Temp. 45°F45°F51°F56°F64°F70°F76°F75°F68°F60°F52°F46°F
Low 39°F39°F43°F49°F57°F62°F67°F66°F60°F54°F46°F41°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 at Sarzana / Luni

Average Hourly Temperature at Sarzana / LuniJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowvery coldvery coldcoldcoldcoolcoolcomfortablewarmvery coldwarm
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.

Nevada City, California, United States (5,926 miles away) is the far-away foreign place with temperatures most similar to Sarzana / Luni (view comparison).

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At Sarzana / Luni, 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 at Sarzana / Luni begins around June 11 and lasts for 3.1 months, ending around September 15.

The clearest month of the year at Sarzana / Luni is July, during which on average the sky is clear, mostly clear, or partly cloudy 81% of the time.

The cloudier part of the year begins around September 15 and lasts for 8.9 months, ending around June 11.

The cloudiest month of the year at Sarzana / Luni is November, during which on average the sky is overcast or mostly cloudy 52% of the time.

Cloud Cover Categories at Sarzana / Luni

Cloud Cover Categories at Sarzana / LuniclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2082%Jul 2082%Jan 2147%Jan 2147%Jun 1165%Jun 1165%Sep 1565%Sep 1565%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 51%48%46%46%43%32%19%24%35%46%52%51%
Clearer 49%52%54%54%57%68%81%76%65%54%48%49%

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

The wetter season lasts 9.2 months, from September 6 to June 12, with a greater than 22% chance of a given day being a wet day. The month with the most wet days at Sarzana / Luni is November, with an average of 9.2 days with at least 0.04 inches of precipitation.

The drier season lasts 2.8 months, from June 12 to September 6. The month with the fewest wet days at Sarzana / Luni is July, with an average of 3.8 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 at Sarzana / Luni is November, with an average of 9.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 32% on November 12.

Daily Chance of Precipitation at Sarzana / Luni

Daily Chance of Precipitation at Sarzana / LuniwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 1232%Nov 1232%Jul 2111%Jul 2111%Sep 622%Sep 622%Jun 1222%Jun 1222%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 6.8d6.1d6.4d8.4d7.5d5.9d3.8d4.8d7.3d9.4d9.2d7.8d

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. Sarzana / Luni experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year at Sarzana / Luni. The month with the most rain at Sarzana / Luni is October, with an average rainfall of 4.2 inches.

The month with the least rain at Sarzana / Luni is July, with an average rainfall of 1.0 inches.

Average Monthly Rainfall at Sarzana / Luni

Average Monthly Rainfall at Sarzana / LuniJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 inOct 304.2 inOct 304.2 inJul 161.0 inJul 161.0 inApr 92.5 inApr 92.5 inFeb 232.0 inFeb 232.0 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 2.2″2.0″2.1″2.5″1.9″1.6″1.0″1.6″2.9″4.2″3.9″2.5″

The length of the day at Sarzana / Luni varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 53 minutes of daylight; the longest day is June 20, with 15 hours, 30 minutes of daylight.

Hours of Daylight and Twilight at Sarzana / Luni

Hours of Daylight and Twilight at Sarzana / LuniJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 30 minJun 2015 hr, 30 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 228 hr, 53 minDec 218 hr, 53 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 9.3h10.5h12.0h13.5h14.8h15.4h15.1h13.9h12.5h11.0h9.6h8.9h

The earliest sunrise is at 5:36 AM on June 15, and the latest sunrise is 2 hours, 19 minutes later at 7:55 AM on January 3. The earliest sunset is at 4:41 PM on December 9, and the latest sunset is 4 hours, 26 minutes later at 9:07 PM on June 26.

Daylight saving time (DST) is observed at Sarzana / Luni 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 at Sarzana / Luni

Sunrise & Sunset with Twilight and Daylight Saving Time at Sarzana / LuniJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:36 AMJun 155:36 AM9:07 PMJun 269:07 PMJun 26Dec 94:41 PMDec 94:41 PM7:55 AMJan 37:55 AMJan 3Mar 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 at Sarzana / Luni

Solar Elevation and Azimuth at Sarzana / LuniJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00001010102020203030304040506000010101010202020303040405050602269NowNow
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 at Sarzana / Luni

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.

Sarzana / Luni experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.6 months, from June 18 to September 7, during which time the comfort level is muggy, oppressive, or miserable at least 7% of the time. The month with the most muggy days at Sarzana / Luni is August, with 6.5 days that are muggy or worse.

The least muggy day of the year is March 7, when muggy conditions are essentially unheard of.

Humidity Comfort Levels at Sarzana / Luni

Humidity Comfort Levels at Sarzana / LunimuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 70%Mar 70%Aug 627%Aug 627%Jun 187%Jun 187%Sep 77%Sep 77%muggymuggyhumidhumidcomfortablecomfortabledrydryoppressiveoppressive
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 0.0d0.0d0.0d0.0d0.1d1.7d6.1d6.5d1.3d0.1d0.0d0.0d

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 at Sarzana / Luni experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.7 months, from October 2 to April 22, with average wind speeds of more than 6.5 miles per hour. The windiest month of the year at Sarzana / Luni is December, with an average hourly wind speed of 8.0 miles per hour.

The calmer time of year lasts for 5.4 months, from April 22 to October 2. The calmest month of the year at Sarzana / Luni is July, with an average hourly wind speed of 5.0 miles per hour.

Average Wind Speed at Sarzana / Luni

Average Wind Speed at Sarzana / LuniwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphDec 148.1 mphDec 148.1 mphAug 94.9 mphAug 94.9 mphOct 26.5 mphOct 26.5 mphApr 226.5 mphApr 226.5 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) 7.97.97.46.75.75.25.05.16.07.07.98.0

The predominant average hourly wind direction at Sarzana / Luni varies throughout the year.

The wind is most often from the south for 3.0 months, from March 29 to June 30 and for 4.1 weeks, from August 30 to September 28, with a peak percentage of 35% on June 9. The wind is most often from the west for 2.0 months, from June 30 to August 30, with a peak percentage of 37% on July 31. The wind is most often from the east for 6.0 months, from September 28 to March 29, with a peak percentage of 37% on January 1.

Wind Direction at Sarzana / Luni

Wind Direction at Sarzana / LuniESWSEJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Sarzana / Luni 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 2.6 months, from June 29 to September 17, with an average temperature above 73°F. The month of the year at Sarzana / Luni with the warmest water is August, with an average temperature of 76°F.

The time of year with cooler water lasts for 4.4 months, from December 12 to April 26, with an average temperature below 60°F. The month of the year at Sarzana / Luni with the coolest water is February, with an average temperature of 56°F.

Average Water Temperature at Sarzana / Luni

Average Water Temperature at Sarzana / LuniwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°FAug 977°FAug 977°F56°FFeb 2256°FFeb 22Jun 2973°FJun 2973°FSep 1773°FSep 1773°FDec 1260°FDec 1260°FApr 2660°FApr 2660°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 57°F56°F56°F59°F64°F70°F75°F76°F73°F68°F64°F60°F

To characterize how pleasant the weather is at Sarzana / Luni 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 Sarzana / Luni for general outdoor tourist activities is from mid May to late September, with a peak score in the last week of June.

Tourism Score at Sarzana / Luni

Tourism Score at Sarzana / Lunibest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.77.70.70.77.67.67.07.0NowNowtemperaturetemperature 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 Sarzana / Luni for hot-weather activities is from late June to late August, with a peak score in the third week of July.

Beach/Pool Score at Sarzana / Luni

Beach/Pool Score at Sarzana / Lunibest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.38.30.00.0NowNowtemperaturetemperature 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 at Sarzana / Luni typically lasts for 9.9 months (302 days), from around February 19 to around December 17, rarely starting after March 12, or ending before November 13.

Time Spent in Various Temperature Bands and the Growing Season at Sarzana / Luni

Time Spent in Various Temperature Bands and the Growing Season at Sarzana / Lunigrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Feb 1950%Feb 1950%Dec 1750%Dec 1790%Mar 1290%Mar 1290%Nov 1390%Nov 1316%Jan 1616%Jan 16Jul 22100%Jul 22100%NowNowvery coldcoldcoolcomfortablewarmhotfreezing
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 at Sarzana / Luni should appear around March 17, only rarely appearing before February 29 or after April 4.

Growing Degree Days at Sarzana / Luni

Growing Degree Days at Sarzana / LuniJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°FMar 1786°FMar 1786°FJun 6900°FJun 6900°FJul 171,800°FJul 171,800°FDec 313,974°FDec 313,974°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 3.2 months, from May 8 to August 15, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest month of the year at Sarzana / Luni is July, with an average of 7.3 kWh.

The darker period of the year lasts for 3.6 months, from October 27 to February 15, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest month of the year at Sarzana / Luni is December, with an average of 1.5 kWh.

Average Daily Incident Shortwave Solar Energy at Sarzana / Luni

Average Daily Incident Shortwave Solar Energy at Sarzana / LunibrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 77.5 kWhJul 77.5 kWhDec 271.4 kWhDec 271.4 kWhMay 86.3 kWhMay 86.3 kWhAug 156.3 kWhAug 156.3 kWhOct 272.7 kWhOct 272.7 kWhFeb 152.7 kWhFeb 152.7 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) 1.72.74.15.46.67.37.36.24.73.12.01.5

This report illustrates the typical weather at Sarzana / Luni, 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

Sarzana / Luni has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Pisa International Airport, Monte Cimone, Piacenza-San Damiano Air Base, Genoa Cristoforo Colombo Airport, Florence Peretola Airport, Brescia / Ghedi, Bologna Guglielmo Marconi Airport, and Verona Brescia Airport.

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.