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August Weather at Bastia-Poretta France

Daily high temperatures decrease by 3°F, from 85°F to 82°F, rarely falling below 77°F or exceeding 89°F. The highest daily average high temperature is 85°F on August 6.

Daily low temperatures decrease by 3°F, from 68°F to 65°F, rarely falling below 60°F or exceeding 72°F. The highest daily average low temperature is 68°F on August 6.

For reference, on August 5, the hottest day of the year, temperatures at Bastia-Poretta typically range from 68°F to 85°F, while on February 6, the coldest day of the year, they range from 41°F to 56°F.

Average High and Low Temperature in August at Bastia-Poretta

Average High and Low Temperature in August at Bastia-PorettaAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313155°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°FJulSepAug 585°FAug 585°F68°F68°FAug 3182°FAug 3182°F65°F65°FAug 2183°FAug 2183°F66°F66°F
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.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The horizontal axis is the day, 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 August at Bastia-Poretta

Average Hourly Temperature in August at Bastia-PorettaAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJulSepcoolcomfortablewarmcool
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 (5,997 miles away); Punta Alta, Argentina (7,198 miles); and La Plata, Argentina (6,844 miles) are the far-away foreign places with temperatures most similar to Bastia-Poretta (view comparison).

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The month of August at Bastia-Poretta experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 15% to 25%.

The clearest day of the month is August 1, with clear, mostly clear, or partly cloudy conditions 85% of the time.

For reference, on November 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 49%, while on July 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 87%.

Cloud Cover Categories in August at Bastia-Poretta

Cloud Cover Categories in August at Bastia-PorettaAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSepAug 185%Aug 185%Aug 3175%Aug 3175%Aug 1182%Aug 1182%Aug 2178%Aug 2178%clearmostly clearovercastmostly cloudypartly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Bastia-Poretta, the chance of a wet day over the course of August is rapidly increasing, starting the month at 5% and ending it at 13%.

For reference, the year's highest daily chance of a wet day is 31% on November 18, and its lowest chance is 5% on July 13.

Probability of Precipitation in August at Bastia-Poretta

Probability of Precipitation in August at Bastia-PorettaAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%2%2%4%4%6%6%8%8%10%10%12%12%14%14%16%16%18%18%20%20%22%22%24%24%JulSepAug 15%Aug 15%Aug 3113%Aug 3113%Aug 117%Aug 117%Aug 219%Aug 219%rain
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).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during August at Bastia-Poretta is increasing, starting the month at 0.4 inches, when it rarely exceeds 1.0 inches, and ending the month at 1.3 inches, when it rarely exceeds 3.1 inches or falls below 0.1 inches.

Average Monthly Rainfall in August at Bastia-Poretta

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.

Over the course of August at Bastia-Poretta, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 16 minutes, implying an average daily decrease of 2 minutes, 32 seconds, and weekly decrease of 17 minutes, 46 seconds.

The shortest day of the month is August 31, with 13 hours, 11 minutes of daylight and the longest day is August 1, with 14 hours, 27 minutes of daylight.

Hours of Daylight and Twilight in August at Bastia-Poretta

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.

The earliest sunrise of the month at Bastia-Poretta is 6:14 AM on August 1 and the latest sunrise is 32 minutes later at 6:46 AM on August 31.

The latest sunset is 8:41 PM on August 1 and the earliest sunset is 44 minutes earlier at 7:57 PM on August 31.

Daylight saving time is observed at Bastia-Poretta during 2024, but it neither starts nor ends during August, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:44 AM and sets 15 hours, 19 minutes later, at 9:03 PM, while on December 21, the shortest day of the year, it rises at 7:48 AM and sets 9 hours, 3 minutes later, at 4:51 PM.

Sunrise & Sunset with Twilight in August at Bastia-Poretta

The solar day over the course of August. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in August at Bastia-Poretta

Solar Elevation and Azimuth in August at Bastia-PorettaAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJulSep0010102020203030404050506000010102020303030404050506060
northeastsouthwest
Solar elevation and azimuth over the course of August 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 August 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in August at Bastia-Poretta

Moon Rise, Set & Phases in August at Bastia-PorettaAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJulSepJul 612:58 AMJul 612:58 AMJul 2112:18 PMJul 2112:18 PMAug 41:14 PMAug 41:14 PMAug 198:26 PMAug 198:26 PMSep 33:56 AMSep 33:56 AMSep 184:35 AMSep 184:35 AM4:43 AM4:43 AM9:16 PM9:16 PM8:46 PM8:46 PM5:30 AM5:30 AM5:50 AM5:50 AM9:04 PM9:04 PM8:29 PM8:29 PM7:05 AM7:05 AM6:57 AM6:57 AM8:12 PM8:12 PM7:18 PM7:18 PM7:16 AM7:16 AM
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.
Aug 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
10%2:35 AMNE7:11 PMNW-10:53 AMS240,168 mi
2
4%3:35 AMNE7:58 PMNW-11:50 AMS242,398 mi
3
1%4:41 AMNE8:35 PMWNW-12:43 PMS244,564 mi
4
0%5:50 AMENE9:04 PMWNW-1:32 PMS246,610 mi
5
1%6:57 AMENE9:28 PMWNW-2:17 PMS248,460 mi
6
4%8:03 AMENE9:48 PMWNW-2:59 PMS250,014 mi
7
9%9:06 AME10:06 PMW-3:39 PMS251,157 mi
8
15%10:07 AME10:23 PMW-4:17 PMS251,768 mi
9
23%11:08 AME10:41 PMW-4:56 PMS251,735 mi
10
31%12:10 PMESE10:59 PMWSW-5:35 PMS250,970 mi
11
41%1:13 PMESE11:21 PMWSW-6:17 PMS249,426 mi
12
50%2:19 PMESE11:47 PMWSW-7:03 PMS247,110 mi
13
61%3:26 PMSE--7:53 PMS244,099 mi
14
71%-12:20 AMSW4:34 PMSE8:48 PMS240,547 mi
15
81%-1:03 AMSW5:38 PMSE9:48 PMS236,689 mi
16
89%-1:58 AMSW6:34 PMSE10:50 PMS232,829 mi
17
95%-3:05 AMSW7:21 PMSE11:51 PMS229,316 mi
18
97%-4:22 AMWSW7:58 PMESE--
19
100%-5:43 AMWSW8:29 PMESE12:51 AMS226,485 mi
20
100%-7:05 AMWSW8:55 PMESE1:46 AMS224,605 mi
21
98%-8:25 AMW9:18 PME2:39 AMS223,831 mi
22
93%-9:45 AMW9:41 PME3:29 AMS224,185 mi
23
85%-11:03 AMWNW10:05 PMENE4:18 AMS225,556 mi
24
75%-12:22 PMWNW10:31 PMENE5:08 AMS227,740 mi
25
64%-1:40 PMWNW11:03 PMENE6:00 AMS230,478 mi
26
50%-2:56 PMNW11:42 PMNE6:55 AMS233,507 mi
27
41%-4:07 PMNW-7:51 AMS236,600 mi
28
30%12:30 AMNE5:08 PMNW-8:49 AMS239,579 mi
29
21%1:28 AMNE5:58 PMNW-9:45 AMS242,330 mi
30
13%2:32 AMNE6:37 PMNW-10:39 AMS244,789 mi
31
7%3:40 AMENE7:08 PMWNW-11:29 AMS246,932 mi

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 chance that a given day will be muggy at Bastia-Poretta is rapidly decreasing during August, falling from 52% to 37% over the course of the month.

The highest chance of a muggy day during August is 52% on August 5.

For reference, on August 5, the muggiest day of the year, there are muggy conditions 52% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in August at Bastia-Poretta

Humidity Comfort Levels in August at Bastia-PorettaAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JulSepAug 552%Aug 552%Aug 3137%Aug 3137%Aug 2145%Aug 2145%oppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortabledrydrymiserablemiserable
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.

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 Bastia-Poretta is increasing during August, increasing from 5.9 miles per hour to 7.0 miles per hour over the course of the month.

For reference, on December 15, the windiest day of the year, the daily average wind speed is 10.8 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 5.8 miles per hour.

The lowest daily average wind speed during August is 5.8 miles per hour on August 4.

Average Wind Speed in August at Bastia-Poretta

Average Wind Speed in August at Bastia-PorettaAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphJulSepAug 45.8 mphAug 45.8 mphAug 317.0 mphAug 317.0 mphAug 216.5 mphAug 216.5 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction at Bastia-Poretta during August is predominantly out of the north from August 1 to August 20 and the west from August 20 to August 31.

Wind Direction in August at Bastia-Poretta

Wind Direction in August at Bastia-PorettaWNWAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JulSepwestsoutheastnorth
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).

Bastia-Poretta 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 surface water temperature at Bastia-Poretta is essentially constant during August, remaining within 1°F of 76°F throughout.

The highest average surface water temperature during August is 77°F on August 10.

Average Water Temperature in August at Bastia-Poretta

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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).

While it does not do so every year, freezing temperatures are seen at Bastia-Poretta over some winters. The day least likely to be in the growing season is January 16, with a 60% chance.

Time Spent in Various Temperature Bands and the Growing Season in August at Bastia-Poretta

Time Spent in Various Temperature Bands and the Growing Season in August at Bastia-Porettagrowing seasonAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSep100%Aug 16100%Aug 16Jul 27100%Jul 27100%coolcomfortablewarmhot
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.

The average accumulated growing degree days at Bastia-Poretta are rapidly increasing during August, increasing by 765°F, from 2,273°F to 3,038°F, over the course of the month.

Growing Degree Days in August at Bastia-Poretta

The average growing degree days accumulated over the course of August, 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 at Bastia-Poretta is decreasing during August, falling by 1.4 kWh, from 7.2 kWh to 5.9 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in August at Bastia-Poretta

Average Daily Incident Shortwave Solar Energy in August at Bastia-PorettaAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJulSepAug 17.2 kWhAug 17.2 kWhAug 315.9 kWhAug 315.9 kWhAug 116.8 kWhAug 116.8 kWhAug 216.4 kWhAug 216.4 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Bastia-Poretta are 42.553 deg latitude, 9.484 deg longitude, and 10 ft elevation.

The topography within 2 miles of Bastia-Poretta contains only modest variations in elevation, with a maximum elevation change of 177 feet and an average elevation above sea level of 21 feet. Within 10 miles contains only modest variations in elevation (4,035 feet). Within 50 miles also contains extreme variations in elevation (8,727 feet).

The area within 2 miles of Bastia-Poretta is covered by cropland (58%) and artificial surfaces (15%), within 10 miles by water (45%) and trees (25%), and within 50 miles by water (69%) and trees (13%).

This report illustrates the typical weather at Bastia-Poretta, 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

Bastia-Poretta 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 Solenzara Air Base, Calvi - Sainte-Catherine Airport, Ajaccio Napoleon Bonaparte Airport, Figari - Sud-Corse, Pisa International Airport, Grosseto Airport, Monte Argentario, and Capo Mele.

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.

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