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Fall Weather in British Virgin Islands British Virgin Islands

Daily high temperatures decrease by 4°F, from 88°F to 85°F, rarely falling below 82°F or exceeding 92°F.

Daily low temperatures are around 78°F, rarely falling below 74°F or exceeding 82°F.

For reference, on August 5, the hottest day of the year, temperatures in British Virgin Islands typically range from 80°F to 89°F, while on January 23, the coldest day of the year, they range from 74°F to 83°F.

Average High and Low Temperature in the Fall in British Virgin Islands

Average High and Low Temperature in the Fall in British Virgin IslandsSepOctNov70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°FSummerWinterSep 188°FSep 188°F79°F79°FNov 3085°FNov 3085°F76°F76°FOct 188°FOct 188°F79°F79°FNov 186°FNov 186°F78°F78°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 fall temperatures. 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 the Fall in British Virgin Islands

Average Hourly Temperature in the Fall in British Virgin IslandsSepOctNov12 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 AMSummerWinterwarmhot
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.
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The fall in British Virgin Islands experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 64% to 32%. The highest chance of overcast or mostly cloudy conditions is 67% on September 25.

The clearest day of the fall is November 30, with clear, mostly clear, or partly cloudy conditions 68% of the time.

For reference, on May 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 72%, while on January 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 83%.

Cloud Cover Categories in the Fall in British Virgin Islands

Cloud Cover Categories in the Fall in British Virgin IslandsSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinterJan 1183%Jan 1183%Sep 136%Sep 136%Nov 3068%Nov 3068%Oct 135%Oct 135%Nov 143%Nov 143%clearmostly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In British Virgin Islands, the chance of a wet day over the course of the fall is rapidly decreasing, starting the season at 27% and ending it at 19%.

For reference, the year's highest daily chance of a wet day is 29% on September 25, and its lowest chance is 5% on March 24.

Probability of Precipitation in the Fall in British Virgin Islands

Probability of Precipitation in the Fall in British Virgin IslandsSepOctNov0%0%5%5%10%10%15%15%20%20%25%25%30%30%SummerWinterSep 2029%Sep 2029%Sep 127%Sep 127%Nov 3019%Nov 3019%Nov 129%Nov 129%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 season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the fall in British Virgin Islands is decreasing, starting the season at 2.3 inches, when it rarely exceeds 4.9 inches or falls below 0.5 inches, and ending the season at 1.8 inches, when it rarely exceeds 4.2 inches or falls below 0.1 inches.

The highest average 31-day accumulation is 2.8 inches on September 20.

Average Monthly Rainfall in the Fall in British Virgin Islands

Average Monthly Rainfall in the Fall in British Virgin IslandsSepOctNov0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 inSummerWinterSep 192.8 inSep 192.8 inSep 12.3 inSep 12.3 inNov 301.8 inNov 301.8 inOct 12.8 inOct 12.8 inNov 12.8 inNov 12.8 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of the fall in British Virgin Islands, the length of the day is rapidly decreasing. From the start to the end of the season, the length of the day decreases by 1 hour, 22 minutes, implying an average daily decrease of 55 seconds, and weekly decrease of 6 minutes, 23 seconds.

The shortest day of the fall is November 30, with 11 hours, 6 minutes of daylight and the longest day is September 1, with 12 hours, 28 minutes of daylight.

Hours of Daylight and Twilight in the Fall in British Virgin Islands

Hours of Daylight and Twilight in the Fall in British Virgin IslandsSepOctNov0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSummerWinterSep 2212 hr, 8 minSep 2212 hr, 8 minnightnightdaydayNov 3011 hr, 6 minNov 3011 hr, 6 minNov 111 hr, 27 minNov 111 hr, 27 min
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 fall in British Virgin Islands is 6:03 AM on September 1 and the latest sunrise is 30 minutes later at 6:33 AM on November 30.

The latest sunset is 6:31 PM on September 1 and the earliest sunset is 52 minutes earlier at 5:39 PM on November 24.

Daylight saving time is not observed in British Virgin Islands during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:42 AM and sets 13 hours, 15 minutes later, at 6:57 PM, while on December 21, the shortest day of the year, it rises at 6:45 AM and sets 11 hours, 1 minute later, at 5:47 PM.

Sunrise & Sunset with Twilight in the Fall in British Virgin Islands

Sunrise & Sunset with Twilight in the Fall in British Virgin IslandsSepOctNov2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSummerWinter6:03 AM6:03 AMSep 16:31 PMSep 16:31 PM6:30 AM6:30 AMNov 245:39 PMNov 245:39 PM6:08 AM6:08 AMOct 16:06 PMOct 16:06 PM6:18 AM6:18 AMNov 15:44 PMNov 15:44 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the fall. 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 the Fall in British Virgin Islands

Solar Elevation and Azimuth in the Fall in British Virgin IslandsSepOctNov12 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 AMSummerWinter0010202030304050600010102030304040506070
northeastsouthwest
Solar elevation and azimuth in the the fall of 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 the fall of 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 the Fall in British Virgin Islands

Moon Rise, Set & Phases in the Fall in British Virgin IslandsSepOctNov12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSummerWinterAug 47:14 AMAug 47:14 AMAug 192:26 PMAug 192:26 PMSep 29:56 PMSep 29:56 PMSep 1710:35 PMSep 1710:35 PMOct 22:50 PMOct 22:50 PMOct 177:27 AMOct 177:27 AMNov 18:48 AMNov 18:48 AMNov 155:29 PMNov 155:29 PMDec 12:22 AMDec 12:22 AMDec 155:02 AMDec 155:02 AMDec 306:28 PMDec 306:28 PM7:18 PM7:18 PM6:55 PM6:55 PM6:46 AM6:46 AM6:29 PM6:29 PM6:09 PM6:09 PM6:29 AM6:29 AM6:04 PM6:04 PM5:21 PM5:21 PM6:12 AM6:12 AM6:16 AM6:16 AM5:47 PM5:47 PM5:26 PM5:26 PM7:07 AM7:07 AM5:57 PM5:57 PM5:01 PM5:01 PM6:58 AM6:58 AM5:39 PM5:39 PM
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 chance that a given day will be muggy in British Virgin Islands is decreasing during the fall, falling from 99% to 91% over the course of the season.

For reference, on July 31, the muggiest day of the year, there are muggy conditions 100% of the time, while on February 29, the least muggy day of the year, there are muggy conditions 72% of the time.

Humidity Comfort Levels in the Fall in British Virgin Islands

Humidity Comfort Levels in the Fall in British Virgin IslandsSepOctNov0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SummerWinterSep 199%Sep 199%Nov 3091%Nov 3091%Oct 1100%Oct 1100%Nov 198%Nov 198%miserablemiserableoppressiveoppressivemuggymuggyhumidhumid
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 in British Virgin Islands is gradually increasing during the fall, increasing from 13.8 miles per hour to 14.7 miles per hour over the course of the season.

For reference, on July 12, the windiest day of the year, the daily average wind speed is 16.1 miles per hour, while on October 9, the calmest day of the year, the daily average wind speed is 11.9 miles per hour.

The lowest daily average wind speed during the fall is 11.9 miles per hour on October 9.

Average Wind Speed in the Fall in British Virgin Islands

Average Wind Speed in the Fall in British Virgin IslandsSepOctNov0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mphSummerWinterOct 911.9 mphOct 911.9 mphSep 113.8 mphSep 113.8 mphNov 3014.7 mphNov 3014.7 mphNov 112.8 mphNov 112.8 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in British Virgin Islands throughout the fall is predominantly from the east, with a peak proportion of 90% on September 1.

Wind Direction in the Fall in British Virgin Islands

Wind Direction in the Fall in British Virgin IslandsSepOctNov0%100%20%80%40%60%60%40%80%20%100%0%SummerWintereastsouthnorth
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).

British Virgin Islands 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 in British Virgin Islands is gradually decreasing during the fall, falling by 2°F, from 84°F to 82°F, over the course of the season.

The highest average surface water temperature during the fall is 84°F on September 26.

Average Water Temperature in the Fall in British Virgin Islands

Average Water Temperature in the Fall in British Virgin IslandsSepOctNov78°F78°F79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°FSummerWinterSep 2684°FSep 2684°FSep 184°FSep 184°FNov 3082°FNov 3082°FNov 183°FNov 183°F
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).

Temperatures in British Virgin Islands 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 the Fall in British Virgin Islands

Time Spent in Various Temperature Bands and the Growing Season in the Fall in British Virgin IslandsSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SummerWinter100%Oct 16100%Oct 16comfortablewarmhot
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 in British Virgin Islands are very rapidly increasing during the fall, increasing by 2,851°F, from 7,380°F to 10,231°F, over the course of the season.

Growing Degree Days in the Fall in British Virgin Islands

Growing Degree Days in the Fall in British Virgin IslandsSepOctNov7,500°F7,500°F8,000°F8,000°F8,500°F8,500°F9,000°F9,000°F9,500°F9,500°F10,000°F10,000°FSummerWinterSep 17,380°FSep 17,380°FNov 3010,231°FNov 3010,231°FOct 18,359°FOct 18,359°FNov 19,346°FNov 19,346°F
The average growing degree days accumulated over the course of the fall, 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 in British Virgin Islands is gradually decreasing during the fall, falling by 0.6 kWh, from 5.4 kWh to 4.8 kWh, over the course of the season.

The lowest average daily incident shortwave solar energy during the fall is 4.6 kWh on October 30.

Average Daily Incident Shortwave Solar Energy in the Fall in British Virgin Islands

Average Daily Incident Shortwave Solar Energy in the Fall in British Virgin IslandsSepOctNov0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhSummerWinterOct 304.6 kWhOct 304.6 kWhSep 15.4 kWhSep 15.4 kWhNov 304.8 kWhNov 304.8 kWhOct 14.7 kWhOct 14.7 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 British Virgin Islands are 18.500 deg latitude, -64.500 deg longitude, and 0 ft elevation.

The topography within 2 miles of British Virgin Islands is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).

The area within 2 miles of British Virgin Islands is covered by water (100%), within 10 miles by water (93%), and within 50 miles by water (99%).

This report illustrates the typical weather in British Virgin Islands, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used for this report can be found on the Road Town page.

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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.

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