Average Weather on March 7 in Road Town British Virgin Islands

1. World
2. British Virgin Islands
3. Road Town
4. March
5. 7

On March 7, the temperature in Road Town typically ranges from 75°F to 82°F and is rarely below 72°F or above 86°F.

For reference, on August 6, the hottest day of the year, temperatures in Road Town 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.

The coolest time of the day is from 9:00 PM to 7:45 AM, with the coldest at 5:15 AM, at which time the temperature is below 76°F three days out of four, and below 77°F nine days out of ten.

The warmest time of the day is from 10:15 AM to 4:15 PM, with the hottest at 1:15 PM, at which time the temperature is above 81°F three days out of four, and above 79°F nine days out of ten.

The day has gained half its heat by 8:45 AM and lost it again by 6:00 PM.

The figure below shows you a compact characterization of the range of temperatures experienced on March 7 throughout the historical record. The horizontal axis is the time of day and the colored stacked areas indicate the percentage of hours spent in various temperature bands.

In Road Town on March 7, the average percentage of the sky covered by clouds does not show significant systematic variation over the course of the day, with the percentage of time that the sky is overcast or mostly cloudy remaining about 21% throughout the day.

For reference, on May 30, 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%.

On average, there is a 6% chance that more than 0.04 inches of total precipitation will fall in Road Town throughout the day on March 7, all of which can be expected to be rain.

For reference, the year's highest daily chance of precipitation is 29% on September 26, and its lowest chance is 5% on March 25.

For those 6% of years with precipitation on March 7, the chart below shows when throughout the day that precipitation is more or less likely to occur, excluding hourly accumulations of less than 0.01 inches. If precipitation were equally likely throughout the day, all hours would report 4.2% (100% divided by 24 hours).

Precipitation is most likely between 10 AM and 11 AM, and least likely between 7 PM and 8 PM.

In Road Town on March 7, the Sun rises at 6:32 AM and sets 11 hours, 54 minutes later, at 6:26 PM. Solar noon is at 12:29 PM.

For reference, on June 21, the longest day of the year, the Sun rises at 5:43 AM and sets 13 hours, 14 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, 2 minutes later, at 5:47 PM.

Civil twilight, the period before the Sun has risen or after the Sun has set during which time it is possible to engage in most outdoor activities without artificial lighting, begins and ends 22 minutes before sunrise and after sunset, at 6:10 AM and 6:48 PM respectively.

Nautical twilight, during which time it is possible to clearly discern the horizon (e.g., for navigational purposes), begins and ends 47 minutes before sunrise and after sunset, at 5:45 AM and 7:13 PM respectively.

Astronomical twilight, outside of which it is possible to make the most sensitive of astronomical observations, begins and ends 1 hour, 12 minutes before sunrise and after sunset, at 5:20 AM and 7:38 PM respectively.

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 of muggy, oppressive, or miserable conditions in Road Town on March 7 varies over the course of the day, with an average daily chance of 73%.

The muggiest time of day on March 7 is around 10:30 PM, with muggy conditions 86% of the time.

The least muggy time of day is around 5:30 AM, with muggy conditions 59% of the time.

For reference, on August 1, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 1, the least muggy day of the year, there are muggy conditions 72% of the time.

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 Road Town on March 7 remains essentially constant throughout the day, remaining within 0.4 miles per hour of 7.7 miles per hour throughout.

For reference, on July 14, the windiest day of the year, the daily average wind speed is 8.7 miles per hour, while on October 10, the calmest day of the year, the daily average wind speed is 6.4 miles per hour.

Over the entire course of March 7 in Road Town, the hourly average wind direction, in order of prevalence, is from the east (84%), north (9%), south (6%), and west (1%).

Road Town 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 does not change appreciably over the course of the day, so this section does not include a chart.

The average surface water temperature on March 7 in Road Town is 79°F, mostly staying between 78°F and 79°F, and rarely falling below 77°F or exceeding 80°F.

For reference, the year's highest average is 84°F on September 27, and its lowest average is 79°F on March 2.

This section discusses the incident shortwave solar power 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 peak incident shortwave solar power per square meter is 0.93 kilowatts at around 12:15 PM.

In contrast, the corresponding value on April 15, the brightest day of the year, is 0.96 kilowatts at around 12:15 PM. The corresponding value on October 30, the darkest day of the year, is 0.67 kilowatts at around 12:15 PM.

For the purposes of this report, the geographical coordinates of Road Town are 18.427 deg latitude, -64.621 deg longitude, and 33 ft elevation.

The topography within 2 miles of Road Town contains very significant variations in elevation, with a maximum elevation change of 1,476 feet and an average elevation above sea level of 421 feet. Within 10 miles also contains very significant variations in elevation (1,742 feet). Within 50 miles also contains very significant variations in elevation (1,781 feet).

The area within 2 miles of Road Town is covered by trees (41%), water (28%), and grassland (25%), within 10 miles by water (87%), and within 50 miles by water (98%).

This report illustrates the typical weather in Road Town, 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 Road Town.

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

The stations contributing to this reconstruction are: Cyril E. King Airport (90%, 39 kilometers, west) and Princess Juliana International Airport (10%, 165 kilometers, east).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.