September weather forecast and climate
Road Town, British Virgin Islands

A view of the Road Town in the British Virgin Islands from the Mount Sage National Park in Tortola
A view of the Road Town in the British Virgin Islands from the Mount Sage National Park in Tortola
September, the first month of the autumn, in Road Town, is still a warm month, with temperature in the range of an average high of 28.9°C (84°F) and an average low of 27.7°C (81.9°F).

Temperature

With an average high-temperature of 28.9°C (84°F) and an average low-temperature of 27.7°C (81.9°F), September is the warmest month.

Heat index

In September, the average heat index is calculated to a tropical 33.8°C (92.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, wind, pregnancy). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Road Town, during September, the rain falls for 23.4 days and regularly aggregates up to 110mm (4.33") of precipitation. Throughout the year, in Road Town, there are 262.1 rainfall days, and 835mm (32.87") of precipitation is accumulated.

Daylight

In Road Town, the average length of the day is 12.2h.

Sunshine

The average sunshine in September is 8.6h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Road Town. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Road Town. A UV Index value of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the warmest month in Road Town?

The warmest month in Road Town is September, with an average high-temperature of 28.9°C (84°F) and an average low-temperature of 27.7°C (81.9°F).

What is the temperature in September in Road Town?

In September, the average high-temperature is 28.9°C (84°F), and the average low-temperature is 27.7°C (81.9°F). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that takes the relative humidity and factores it into the air temperature reading, is appraised at 33.8°C (92.8°F).

What is the average humidity in September in Road Town?

The average relative humidity in September in Road Town is 77%.

How many days does it rain in September in Road Town?

In Road Town, in September, it is raining for 23.4 days, with typically 110mm (4.33") of accumulated precipitation.

What is the average length of the day in September in Road Town?

The average length of the day in September in Road Town is 12.2h.

How many hours of sunshine does Road Town have in September?

The average sunshine in September in Road Town, British Virgin Islands, is 8.6h.

What are the months with the highest UV index in Road Town?

Months with the highest UV index in Road Town are January through December, with an average maximum UV index of 7.

What is the month with the lowest UV index in Road Town?

Months with the lowest UV index in Road Town, British Virgin Islands, are January through December, with an average maximum UV index of 7.

What is the UV index reading in September in Road Town?

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in September - Road Town, British Virgin Islands
  • Average high temperature in September: 28.9°C

The warmest month (with the highest average high temperature) is September (28.9°C).
Months with the lowest average high temperature are February and March (25.9°C).

  • Average low temperature in September: 27.7°C

The month with the highest average low temperature is October (27.8°C).
The coldest month (with the lowest average low temperature) is March (24.7°C).

Average pressure in September - Road Town, British Virgin Islands
  • Average pressure in September: 1013.5mbar

The month with the highest atmospheric pressure is January (1016.7mbar).
The month with the lowest atmospheric pressure is October (1012.7mbar).

Average wind speed in September - Road Town, British Virgin Islands
  • Average wind speed in September: 19.1km/h

The windiest month (with the highest average wind speed) is July (24.4km/h).
The calmest month (with the lowest average wind speed) is October (18.2km/h).

Average humidity in September - Road Town, British Virgin Islands
  • Average humidity in September: 77%

Months with the highest relative humidity are June and July (79%).
Months with the lowest relative humidity are January, February, March, October and December (75%).

Average rainfall in September - Road Town, British Virgin Islands
  • Average rainfall in September: 110mm

The wettest months (with the highest rainfall) are August and October (113mm).
The driest month (with the least rainfall) is February (28mm).

Average rainfall days in September - Road Town, British Virgin Islands
  • Average rainfall days in September: 23.4 days

The month with the highest number of rainy days is November (24.9 days).
The month with the least rainy days is February (17.5 days).

Average daylight in September / Average sunshine in September - Road Town, British Virgin Islands
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.2h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in September: 8.6h

The month with the most sunshine is June (Average sunshine: 10.4h).
The month with the least sunshine is December (Average sunshine: 6.3h).

Average sunshine days in September - Road Town, British Virgin Islands
  • Average sunshine days in September: 3.5 days

The month with the most sunshine days is February (7.1 days).
The month with the least sunshine days is August (1.7 days).

Average UV index in September - Road Town, British Virgin Islands
  • Average UV index in September: 7

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in September - Road Town, British Virgin Islands
  • Average cloud cover in September: 37

Months with the most cloud cover are May, July and August (Cloud cover 41).
The month with the least cloud cover is February (Cloud cover 34).

Average visibility in September - Road Town, British Virgin Islands
  • Average visibility in September: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).