August weather forecast
Charlotte Amalie, VI

The Charlotte Amalie Harbour within the United States Virgin Islands
The Charlotte Amalie Harbour within the United States Virgin Islands

Weather in August

The last month of the summer, August, is another warm month in Charlotte Amalie, United States Virgin Islands, with an average temperature varying between 83.7°F (28.7°C) and 80.8°F (27.1°C).

Temperature

In August, the average high-temperature is relatively the same as in July - a still warm 83.7°F (28.7°C). The average low-temperature, is 80.8°F (27.1°C).

Heat index

In August, the average heat index is computed to be a tropical 93.2°F (34°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, pregnancy, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The months with the highest humidity in Charlotte Amalie are May through August, with an average relative humidity of 78%.

Rainfall

In August, the rain falls for 22.5 days. Throughout August, 4.21" (107mm) of precipitation is accumulated. Throughout the year, there are 253.1 rainfall days, and 33.27" (845mm) of precipitation is accumulated.

Ocean temperature

In August, the average ocean temperature in Charlotte Amalie, United States Virgin Islands, is 84.4°F (29.1°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The average length of the day in August in Charlotte Amalie is 12h and 44min.
On the first day of August in Charlotte Amalie, sunrise is at 5:57 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 6:35 pm AST.

Sunshine

In Charlotte Amalie, the average sunshine in August is 8.9h.

UV index

The months with the highest UV index in Charlotte Amalie are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in August transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the temperature in August in Charlotte Amalie?

In August, in Charlotte Amalie, United States Virgin Islands, the average high-temperature is 83.7°F (28.7°C), and the average low-temperature is 80.8°F (27.1°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is computed to be 93.2°F (34°C).

What are the most humid months in Charlotte Amalie?

May through August, with an average relative humidity of 78%, are most humid months in Charlotte Amalie, United States Virgin Islands.

What is the average humidity in August in Charlotte Amalie?

In August, the average relative humidity is 78%.

How many days does it rain in August in Charlotte Amalie?

In Charlotte Amalie, in August, it is raining for 22.5 days, with typically 4.21" (107mm) of accumulated precipitation.

What is the ocean temperature in August in Charlotte Amalie?

In Charlotte Amalie, the average seawater temperature in August is 84.4°F (29.1°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Charlotte Amalie have in August?

In Charlotte Amalie, United States Virgin Islands, the average day length in August is 12h and 44min.

What time are sunrise and sunset in August in Charlotte Amalie?

In August, on the first day of the month, sunrise is at 5:57 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 6:35 pm AST.

How long on average sun shines in August in Charlotte Amalie?

The average sunshine duration in August in Charlotte Amalie is 8.9h.

What are the months with the highest UV index in Charlotte Amalie?

January through December, with an average maximum UV index of 7, are months with the highest UV index in Charlotte Amalie.

When is the lowest UV index in Charlotte Amalie?

The months with the lowest UV index in Charlotte Amalie, United States Virgin Islands, are January through December, with an average maximum UV index of 7.

What is the UV index intensity in August in Charlotte Amalie?

In Charlotte Amalie, United States Virgin Islands, the average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.

Average temperature in August
Charlotte Amalie, VI

Average temperature in August - Charlotte Amalie, VI
  • Average high temperature in August: 83.7°F

The warmest month (with the highest average high temperature) is September (84°F).
The month with the lowest average high temperature is March (78.4°F).

  • Average low temperature in August: 80.8°F

The month with the highest average low temperature is October (81.5°F).
The coldest month (with the lowest average low temperature) is March (75.7°F).

[Resources]

Average pressure in August
Charlotte Amalie, VI

Average pressure in August - Charlotte Amalie, VI
  • Average pressure in August: 29.97"Hg

The months with the highest atmospheric pressure are January and February (30.02"Hg).
The months with the lowest atmospheric pressure are October and November (29.91"Hg).

[Resources]

Average wind speed in August
Charlotte Amalie, VI

Average wind speed in August - Charlotte Amalie, VI
  • Average wind speed in August: 14.4mph

The windiest month (with the highest average wind speed) is July (15mph).
The calmest month (with the lowest average wind speed) is October (11.1mph).

[Resources]

Average humidity in August
Charlotte Amalie, VI

Average humidity in August - Charlotte Amalie, VI
  • Average humidity in August: 78%

The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are January, February, March, October, November and December (75%).

[Resources]

Average rainfall in August
Charlotte Amalie, VI

Average rainfall in August - Charlotte Amalie, VI
  • Average rainfall in August: 4.21"

The wettest month (with the highest rainfall) is September (4.45").
The driest month (with the least rainfall) is February (1.22").

[Resources]

Average rainfall days in August
Charlotte Amalie, VI

Average rainfall days in August - Charlotte Amalie, VI
  • Average rainfall days in August: 22.5 days

The month with the highest number of rainy days is November (25.5 days).
The months with the least rainy days are February, March and June (18.2 days).

[Resources]

Average sea temperature in August
Charlotte Amalie, VI

Average sea temperature in August - Charlotte Amalie, VI
  • Average sea temperature in August: 84.4°F

The best month for swimming (with the highest average sea temperature) is September (85°F).
The coldest month (with the lowest average sea temperature) is February (78.7°F).

[Resources]

Average daylight in August /
Average sunshine in August
Charlotte Amalie, VI

Average daylight in August / Average sunshine in August - Charlotte Amalie, VI
  • Average daylight in August: 12h and 44min

The month with the longest days is June (Average daylight: 13h and 13min).
The month with the shortest days is December (Average daylight: 11h and 3min).

  • Average sunshine in August: 8h and 54min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).

[Resources]

Average sunshine days in August
Charlotte Amalie, VI

Average sunshine days in August - Charlotte Amalie, VI
  • Average sunshine days in August: 4 days

The months with the most sunshine days are March and April (7.3 days).
The month with the least sunshine days is November (2.4 days).

[Resources]

Average UV index in August
Charlotte Amalie, VI

Average UV index in August - Charlotte Amalie, VI
  • Average UV index in August: 7

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

[Resources]

Average cloud cover in August
Charlotte Amalie, VI

Average cloud cover in August - Charlotte Amalie, VI
  • Average cloud cover in August: 39

The months with the most cloud cover are May and July (Cloud cover 40).
The month with the least cloud cover is February (Cloud cover 33).

[Resources]

Average visibility in August
Charlotte Amalie, VI

Average visibility in August - Charlotte Amalie, VI
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location