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

Monthly 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
January, the same as December, is another warm winter month in Saint John, United States Virgin Islands, with temperature in the range of an average low of 69.8°F (21°C) and an average high of 82.4°F (28°C). January through March and December, with an average high-temperature of 82.4°F (28°C), are the coldest months. Weather in January »

February, the last month of the winter, in Saint John, is also a moderately hot month, with temperature in the range of an average high of 82.4°F (28°C) and an average low of 69.8°F (21°C). The coldest months are January through March and December, with an average high-temperature of 82.4°F (28°C). February is the month with the least rainfall. Weather in February »

March, the first month of the spring, in Saint John, is also a moderately hot month, with average temperature varying between 69.8°F (21°C) and 82.4°F (28°C). January through March and December, with an average high-temperature of 82.4°F (28°C), are the coldest months. In March, in Saint John, the rain falls for 10 days. Weather in March »

April, like March, in Saint John, United States Virgin Islands, is a moderately hot spring month, with temperature in the range of an average low of 71.6°F (22°C) and an average high of 84.2°F (29°C). In Saint John, the average high-temperature in April is essentially the same as in March - a still warm 84.2°F (29°C). Weather in April »

May, the last month of the spring, in Saint John, is another warm month, with average temperature varying between 84.2°F (29°C) and 73.4°F (23°C). In May, the average high-temperature remains equal as in April - a still moderately hot 84.2°F (29°C). Weather in May »

The first month of the summer, June, is a tropical month in Saint John, United States Virgin Islands, with average temperature varying between 75.2°F (24°C) and 86°F (30°C). In Saint John, the average high-temperature in June is relatively the same as in May - a hot 86°F (30°C). Weather in June »

July, like June, is another hot summer month in Saint John, United States Virgin Islands, with average temperature ranging between max 86°F (30°C) and min 75.2°F (24°C). In Saint John, the average high-temperature in July remains equal as in June - a still tropical 86°F (30°C). Weather in July »

August, the last month of the summer, in Saint John, is also a hot month, with average temperature ranging between min 75.2°F (24°C) and max 87.8°F (31°C). August and September, with an average high-temperature of 87.8°F (31°C), are the warmest months. Weather in August »

The first month of the autumn, September, is still a tropical month in Saint John, United States Virgin Islands, with average temperature fluctuating between 87.8°F (31°C) and 75.2°F (24°C). The warmest months are August and September, with an average high-temperature of 87.8°F (31°C). Weather in September »

October, the same as September, in Saint John, United States Virgin Islands, is another tropical autumn month, with temperature in the range of an average low of 75.2°F (24°C) and an average high of 86°F (30°C). In Saint John, United States Virgin Islands, the average high-temperature is relatively the same as in September - a still tropical 86°F (30°C). Weather in October »

The last month of the autumn, November, is another warm month in Saint John, United States Virgin Islands, with average temperature fluctuating between 84.2°F (29°C) and 73.4°F (23°C). In November, the average high-temperature is practically the same as in October - a moderately hot 84.2°F (29°C). Weather in November »

The first month of the winter, December, is still a warm month in Saint John, United States Virgin Islands, with average temperature ranging between max 82.4°F (28°C) and min 71.6°F (22°C). January through March and December, with an average high-temperature of 82.4°F (28°C), are the coldest months. Weather in December »

What is the coldest month in Saint John?

The coldest months are January through March and December, with an average high-temperature of 82.4°F (28°C).

How much does it rain in Saint John?

In Saint John, during the entire year, the rain falls for 156 days and collects up to 49.69" (1262mm) of precipitation.

What months are the ocean coldest in Saint John?

January through April, with an average ocean temperature of 78.8°F (26°C), are months with the coldest seawater in Saint John, United States Virgin Islands.

What is the driest month in Saint John?

The month with the least rainfall in Saint John, United States Virgin Islands, is February when the rain falls for 10 days and typically collects 2.13" (54mm) of precipitation.

What are the months 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.

When is 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.

When are the longest days in Saint John?

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

What is the warmest month in Saint John?

August and September, with an average high-temperature of 87.8°F (31°C), are warmest months.

What are the months with the warmest ocean in Saint John?

Months with the warmest seawater in Saint John, United States Virgin Islands, are September and October, with an average ocean temperature of 84.2°F (29°C).

What is the wettest month in Saint John?

Months with the most rainfall in Saint John are October and November, with an average 6.34" (161mm) of precipitation.

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

Months with the least sunshine are November and December, with an average of 7h of sunshine.

What is the month with the shortest days in Saint John?

December has the shortest days of the year in Saint John, United States Virgin Islands, with an average of 11h of daylight.

What is the month with the lowest UV index in Saint John?

With an average maximum UV index of 7, December is the month with the lowest UV index in Saint John, United States Virgin Islands.
Average temperature - Saint John, VI

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).

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 - Saint John, VI

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 - Saint John, VI

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 - Saint John, VI

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 / Average sunshine - Saint John, VI

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

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 - Saint John, VI

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).