Charlotte Amalie
United States Virgin Islands, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Charlotte Amalie, VI

An aerial night view of the Charlotte Amalie Harbour within the United States Virgin Islands
An aerial night view of the Charlotte Amalie Harbour within the United States Virgin Islands
July, like June, in Charlotte Amalie, United States Virgin Islands, is a moderately hot summer month, with average temperature fluctuating between 82.9°F (28.3°C) and 80.2°F (26.8°C).

Temperature

In Charlotte Amalie, United States Virgin Islands, the average high-temperature is relatively the same as in June - a still moderately hot 82.9°F (28.3°C). In July, the average low-temperature is 80.2°F (26.8°C).

Heat index

In July, the average heat index is appraised at a tropical 90.5°F (32.5°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With the 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 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, wind, metabolic differences, and pregnancy affect individual temperature impact. 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

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

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 Charlotte Amalie, the average seawater temperature is 83.7°F (28.7°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

In July, the average length of the day is 13.1h.

Sunshine

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

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Charlotte Amalie. Months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In July, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in July in Charlotte Amalie?

In Charlotte Amalie, in July, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 80.2°F (26.8°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, is calculated to 90.5°F (32.5°C).

What is the most humid month in Charlotte Amalie?

Months with the highest humidity are May through August, with an average relative humidity of 78%.

What is the average humidity in July in Charlotte Amalie?

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

How much does it rain in Charlotte Amalie in July?

In July, in Charlotte Amalie, the rain falls for 21.7 days. Throughout July, 2.91" (74mm) of precipitation is accumulated.

How warm is the water in July in Charlotte Amalie?

In Charlotte Amalie, United States Virgin Islands, in July, the average water temperature is 83.7°F (28.7°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 July?

In July, the average length of the day is 13.1h.

How many hours of sunshine does Charlotte Amalie have in July?

The average sunshine in July in Charlotte Amalie, United States Virgin Islands, is 10.3h.

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

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?

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

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

In Charlotte Amalie, the average daily maximum UV index in July is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in July - Charlotte Amalie, VI
  • Average high temperature in July: 28.3°C

The warmest month (with the highest average high temperature) is September (28.9°C).
The month with the lowest average high temperature is March (25.8°C).

  • Average low temperature in July: 26.8°C

The month with the highest average low temperature is October (27.5°C).
The coldest month (with the lowest average low temperature) is March (24.3°C).

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

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

Average rainfall in July - Charlotte Amalie, VI
  • Average rainfall in July: 74mm

The wettest month (with the highest rainfall) is September (113mm).
The driest month (with the lowest rainfall) is February (31mm).

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).
Months with the lowest number of rainy days are February, March and June (18.2 days).

Average sea temperature in July - Charlotte Amalie, VI
  • Average sea temperature in July: 28.7°C

The best month for swimming (with the highest average sea temperature) is September (29.4°C).
The coldest month (with the lowest average sea temperature) is February (25.9°C).

Average daylight in July / Average sunshine in July - Charlotte Amalie, VI
  • Average daylight in July: 13.1h

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

  • Average sunshine in July: 10.3h

The month with most sunshine is June (Average sunshine: 10.5h).
Months with least sunshine are November and December (Average sunshine: 6.5).

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