July weather forecast and climate
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 average temperature ranging between max 82.9°F (28.3°C) and min 80.2°F (26.8°C).

Temperature

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

Heat index

The average heat index is estimated at a tropical 90.5°F (32.5°C). 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 'real feel', 'apparent temperature', 'felt air temperature', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like differences in body mass, height, and shape, clothing, pregnancy, and activity influence one's weather impression. 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

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

Rainfall

In Charlotte Amalie, during July, the rain falls for 21.7 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, in Charlotte Amalie, there are 253.1 rainfall days, and 33.27" (845mm) of precipitation is accumulated.

Ocean temperature

In Charlotte Amalie, United States Virgin Islands, the average water temperature is 83.7°F (28.7°C).
Note: 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.

Daylight

The average length of the day in Charlotte Amalie is 13.1h.

Sunshine

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

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. Months with the lowest UV index in Charlotte Amalie are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 7 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. 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.
[Resources]

FAQ

What is the temperature in July in Charlotte Amalie?

The average high-temperature, in July, in Charlotte Amalie, United States Virgin Islands, is 82.9°F (28.3°C), while the average low-temperature is 80.2°F (26.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, in July is evaluated at 90.5°F (32.5°C).

What are the most humid months in Charlotte Amalie?

Months with the highest humidity in Charlotte Amalie 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 many days does it rain in July in Charlotte Amalie?

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

What is the water temperature in July in Charlotte Amalie?

In July, the average ocean temperature in Charlotte Amalie, United States Virgin Islands, 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?

The average length of the day in July in Charlotte Amalie, United States Virgin Islands, is 13.1h.

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

The average sunshine in July is 10.3h.

When is 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.

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.

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

The average daily maximum UV index in July in Charlotte Amalie is 7. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays.

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).

[Resources]

Average pressure in July
Charlotte Amalie, VI

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

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

[Resources]

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).

[Resources]

Average humidity in July
Charlotte Amalie, VI

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%).

[Resources]

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").

[Resources]

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).
Months with the least rainy days are February, March and June (18.2 days).

[Resources]

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).

[Resources]

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: 13.1h

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 July: 10.3h

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

[Resources]

Average sunshine days in July
Charlotte Amalie, VI

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

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 July
Charlotte Amalie, VI

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).

[Resources]

Average cloud cover in July
Charlotte Amalie, VI

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

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 July
Charlotte Amalie, VI

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

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

[Resources]