July weather forecast
Saint John, VI

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Beautiful scenery with green vegetation and the vast blue water around the islands in St John, Virgin Islands
Beautiful scenery with green vegetation and the vast blue water around the islands in St John, Virgin Islands

Weather in July

July ushers in the height of summer in Saint John with greater warmth and humidity. The tropical climate becomes intense, drawing visitors to the cool, azure waters. While temperatures edge up slightly, the standout figure is that July shares 3.3" (84mm) of rainfall with June. Matching clear skies with sporadic showers, July offers a well-rounded summer experience in the city.

Temperature

The shift into July uncovers an average high-temperature of a still tropical 86°F (30°C), maintaining the same temperature as the previous month. Throughout July, an average low-temperature of 75.2°F (24°C) is expected.

Rainfall

In July, the rain falls for 14 days. Throughout July, 3.35" (85mm) of precipitation is accumulated. Throughout the year, in Saint John, there are 156 rainfall days, and 49.69" (1262mm) of precipitation is accumulated.

Ocean temperature

In Saint John, in July, the average water temperature is 82.4°F (28°C).
Note: Water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are pleasurable, without feeling uncomfortable even during extended periods.

Daylight

In Saint John, the average length of the day in July is 13h and 7min.
On the first day of July, sunrise is at 5:46 am and sunset at 6:59 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 6:53 pm AST.

Sunshine

The months with the most sunshine are March, April, July and August, with an average of 9h of sunshine.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme threat to health from unsafe exposure to UV radiation for the average person.
Note: The UV index of 12 in July translates into these instructions:
Execute all crucial precautions. Warding off sun exposure is non-negotiable. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat. Post an outdoor workout or swimming, a broad-spectrum SPF 30+ sunscreen should be applied generously and frequently. Beware! Reflecting off water and sand, UV rays are much stronger.
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Frequently asked questions

How hot is July in Saint John?

In July, the average high-temperature and low-temperature in Saint John, United States Virgin Islands, are 86°F (30°C) and 75.2°F (24°C) respectively.

How many days does it rain in July in Saint John?

In Saint John, United States Virgin Islands, during July, the rain falls for 14 days and regularly aggregates up to 3.35" (85mm) of precipitation.

What is the ocean temperature in July in Saint John?

In Saint John, in July, the average water temperature is 82.4°F (28°C). 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.

How many hours of daylight does Saint John have in July?

In Saint John, the average day length in July is 13h and 7min.

When is the sunrise / sunset in July in Saint John?

In July, on the first day of the month, sunrise is at 5:46 am and sunset at 6:59 pm. On the last day of the month, in Saint John, United States Virgin Islands, sunrise is at 5:56 am and sunset at 6:53 pm AST.

What is the month with the most sunshine in Saint John?

March, April, July and August, with an average of 9h of sunshine, are months with the most sunshine.

How long on average sun shines in July in Saint John?

The average sunshine duration in July is 9h.

What are the months with the highest UV index in Saint John?

March through September, with an average maximum UV index of 12, are months with the highest UV index in Saint John, United States Virgin Islands.

What is the UV index intensity in July in Saint John?

The average daily maximum UV index in July is 12. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in July
Saint John, VI

Average temperature in July - Saint John, VI
  • Average high temperature in July: 86°F

The warmest months (with the highest average high temperature) are August and September (88°F).
The months with the lowest average high temperature are January, February, March and December (82°F).

  • Average low temperature in July: 75°F

The months with the highest average low temperature are June, July, August, September and October (75°F).
The coldest months (with the lowest average low temperature) are January, February and March (70°F).

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Average rainfall in July
Saint John, VI

Average rainfall in July - Saint John, VI
  • Average rainfall in July: 3.3"

The wettest months (with the highest rainfall) are October and November (6.3").
The driest month (with the least rainfall) is February (2.1").

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Average rainfall days in July
Saint John, VI

Average rainfall days in July - Saint John, VI
  • Average rainfall days in July: 14 days

The months with the highest number of rainy days are September and October (16 days).
The month with the least rainy days is April (9 days).

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Average sea temperature in July
Saint John, VI

Average sea temperature in July - Saint John, VI
  • Average sea temperature in July: 82°F

The best months for swimming (with the highest average sea temperature) are September and October (84°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (79°F).

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Average daylight in July /
Average sunshine in July
Saint John, VI

Average daylight in July / Average sunshine in July - Saint John, VI
  • Average daylight in July: 13h and 1min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in July: 9h

The months with the most sunshine are March, April, July and August (Average sunshine: 9h).
The months with the least sunshine are November and December (Average sunshine: 7h).

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Average UV index in July
Saint John, VI

Average UV index in July - Saint John, VI
  • Average UV index in July: 12

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).

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Saint John, United States Virgin Islands, USA

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