July 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 July

July, like June, in Charlotte Amalie, United States Virgin Islands, is another warm summer month, with an average temperature ranging between max 82.9°F (28.3°C) and min 80.2°F (26.8°C).

Temperature

In July, the average high-temperature is practically the same as in June - a still moderately hot 82.9°F (28.3°C). The average low-temperature, in July, is 80.2°F (26.8°C).

Heat index

In July, the average heat index is computed to be a hot 91.4°F (33°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', 'real feel', or 'feels like', 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 (clothing, differences in body mass, height, and shape, wind). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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 Charlotte Amalie, in July, during 21.7 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, there are 253.1 rainfall days, and 33.27" (845mm) of precipitation is accumulated.

Ocean temperature

In July, the average ocean temperature in Charlotte Amalie is 83.7°F (28.7°C).
Note: 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.

Daylight

In July, the average length of the day in Charlotte Amalie is 13h and 7min.
On the first day of the month, sunrise is at 5:47 am and sunset at 7:00 pm. On the last day of July, in Charlotte Amalie, sunrise is at 5:57 am and sunset at 6:54 pm AST.

Sunshine

In Charlotte Amalie, the average sunshine in July is 10.3h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 7 in July transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.
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FAQ

What is the temperature in July in Charlotte Amalie?

In July, in Charlotte Amalie, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 80.2°F (26.8°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in July is computed to be 91.4°F (33°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 July in Charlotte Amalie?

In July, the average relative humidity in Charlotte Amalie, United States Virgin Islands, is 78%.

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

In Charlotte Amalie, in July, it is raining for 21.7 days, with typically 2.91" (74mm) of accumulated precipitation.

What is the ocean temperature in July in Charlotte Amalie?

In Charlotte Amalie, United States Virgin Islands, the average seawater temperature in July is 83.7°F (28.7°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in July in Charlotte Amalie?

In July, the average day length in Charlotte Amalie, United States Virgin Islands, is 13h and 7min.

When is the sunrise / sunset in July in Charlotte Amalie?

On the first day of July, sunrise is at 5:47 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 6:54 pm AST.

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

In July, the average sunshine duration in Charlotte Amalie, United States Virgin Islands, is 10.3h.

When is the highest UV index in Charlotte Amalie?

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

What is the month with the lowest UV index in Charlotte Amalie?

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

How high is the UV index in July in Charlotte Amalie?

The average daily maximum UV index in July in Charlotte Amalie is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.

Average temperature in July
Charlotte Amalie, VI

Average temperature in July - Charlotte Amalie, VI
  • Average high temperature in July: 82.9°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 July: 80.2°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).

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Average pressure in July
Charlotte Amalie, VI

Average pressure in July - Charlotte Amalie, VI
  • Average pressure in July: 30.01"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).

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Average wind speed in July
Charlotte Amalie, VI

Average wind speed in July - Charlotte Amalie, VI
  • Average wind speed in July: 15mph

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).

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Average humidity in July
Charlotte Amalie, VI

Average humidity in July - Charlotte Amalie, VI
  • Average humidity in July: 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%).

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Average rainfall in July
Charlotte Amalie, VI

Average rainfall in July - Charlotte Amalie, VI
  • Average rainfall in July: 2.91"

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

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Average rainfall days in July
Charlotte Amalie, VI

Average rainfall days in July - Charlotte Amalie, VI
  • Average rainfall days in July: 21.7 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).

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Average sea temperature in July
Charlotte Amalie, VI

Average sea temperature in July - Charlotte Amalie, VI
  • Average sea temperature in July: 83.6°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).

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

Average daylight in July / Average sunshine in July - Charlotte Amalie, VI
  • Average daylight in July: 13h and 7min

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 July: 10h and 18min

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).

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Average sunshine days in July
Charlotte Amalie, VI

Average sunshine days in July - Charlotte Amalie, VI
  • Average sunshine days in July: 4.6 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).

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Average UV index in July
Charlotte Amalie, VI

Average UV index in July - Charlotte Amalie, VI
  • Average UV index in July: 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).

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Average cloud cover in July
Charlotte Amalie, VI

Average cloud cover in July - Charlotte Amalie, VI
  • Average cloud cover in July: 40

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).

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Average visibility in July
Charlotte Amalie, VI

Average visibility in July - Charlotte Amalie, VI
  • Average visibility in July: 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).

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