Saint John
United States Virgin Islands, USA
Long-term weather forecast
Long-term weather forecast

June weather forecast and climate
Saint John, VI

Beautiful scenery with green vegetation, and the vast blue water around the islands in St John, a cloudy and sunny sky with a great beach scene
Beautiful scenery with green vegetation, and the vast blue water around the islands in St John, a cloudy and sunny sky with a great beach scene
The first month of the summer, June, is a hot month in Saint John, United States Virgin Islands, with average temperature fluctuating between 86°F (30°C) and 75.2°F (24°C).

Temperature

In June, the average high-temperature is almost the same as in May - a hot 86°F (30°C). The average low-temperature, in June, is 75.2°F (24°C).

Rainfall

In Saint John, in June, during 12 rainfall days, 2.9" (73mm) of precipitation is typically accumulated. In Saint John, during the entire year, the rain falls for 156 days and collects up to 49.7" (1262mm) of precipitation.

Ocean temperature

In Saint John, the average seawater temperature in June is 82.4°F (28°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.

Daylight

The month with the longest days in Saint John is June, with an average of 13.2h of daylight.

Sunshine

In June, the average sunshine in Saint John is 8h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an extreme health hazard from unsafe exposure to the UV radiation for the average person.
The daily maximum UV index of 12 interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. 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. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in June in Saint John?

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

How much does it rain in Saint John in June?

In Saint John, in June, during 12 rainfall days, 2.9" (73mm) of precipitation is typically accumulated.

How warm is the water in June in Saint John?

In Saint John, United States Virgin Islands, in June, 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.

When are the longest days in Saint John?

The month with the longest days in Saint John, United States Virgin Islands, is June, with an average of 13.2h of daylight.

What is the average length of the day in June in Saint John?

In Saint John, the average length of the day in June is 13.2h.

How many hours of sunshine does Saint John have in June?

The average sunshine in June is 8h.

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

Months with the highest UV index are March through September, with an average maximum UV index of 12.

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

In June, the average daily maximum UV index in Saint John, United States Virgin Islands, is 12. A UV Index reading of 11, and higher, represents an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in June - Saint John, VI
  • Average high temperature in June: 86°F

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

  • Average low temperature in June: 75°F

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

Average rainfall in June - Saint John, VI
  • Average rainfall in June: 2.9"

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

Average rainfall days in June - Saint John, VI
  • Average rainfall days in June: 12 days

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

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

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

Average daylight in June / Average sunshine in June - Saint John, VI
  • Average daylight in June: 13.2h

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 June: 8h

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

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

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).