Climate and monthly weather forecast
Saint John, VI

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 January

January, the same as December, is another warm winter month in Saint John, United States Virgin Islands, with an average temperature varying between 82.4°F (28°C) and 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). Weather in January »

Weather in February

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

Weather in March

The first month of the spring, March, is still a warm month in Saint John, United States Virgin Islands, with an average temperature fluctuating between 69.8°F (21°C) and 82.4°F (28°C). The coldest months are January through March and December, with an average high-temperature of 82.4°F (28°C). Weather in March »

Weather in April

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

Weather in May

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

Weather in June

June, the first month of the summer in Saint John, is a tropical month, with an average temperature ranging between min 75.2°F (24°C) and max 86°F (30°C). In Saint John, the average high-temperature in June is almost the same as in May - a tropical 86°F (30°C). Weather in June »

Weather in July

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

Weather in August

The last month of the summer, August, is another hot month in Saint John, United States Virgin Islands, with an 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). In Saint John, it is raining for 14 days, with typically 4.9" (124mm) of accumulated precipitation. Weather in August »

Weather in September

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

Weather in October

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 high of 86°F (30°C) and an average low of 75.2°F (24°C). In October, the average high-temperature is almost the same as in September - a still tropical 86°F (30°C). Weather in October »

Weather in November

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

Weather in December

The first month of the winter, December, is also a moderately hot month in Saint John, United States Virgin Islands, with temperature in the range of an average high of 82.4°F (28°C) and an average low of 71.6°F (22°C). The coldest months are January through March and December, with an average high-temperature of 82.4°F (28°C). Weather in December »
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FAQ

What are the coldest months in Saint John?

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

How much does it rain in Saint John?

Throughout the year, in Saint John, there are 156 rainfall days, and 49.69" (1262mm) of precipitation is accumulated.

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

The months with the coldest seawater are January through April, with an average ocean temperature of 78.8°F (26°C).

What is the driest month in Saint John?

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

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 in Saint John, United States Virgin Islands.

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

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

When are the longest days in Saint John?

With an average of 13h and 13min of daylight, June has the longest days of the year in Saint John.

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 in Saint John, United States Virgin Islands.

When is the ocean warmest in Saint John?

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

What is the wettest month in Saint John?

The wettest months are October and November, with an average 6.34" (161mm) of rainfall.

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

November and December, with an average of 7h of sunshine, are months with the least sunshine in Saint John, United States Virgin Islands.

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

December has the shortest days of the year in Saint John, with an average of 11h and 3min of daylight.

Is there Daylight Saving Time (DST) in Saint John?

Saint John, United States Virgin Islands, does not utilize Daylight Saving Time (DST). AST timezone is used over the entire year.

When is the lowest UV index in Saint John?

With an average maximum UV index of 7, December is the month with the lowest UV index.

Average temperature
Saint John, VI

Average temperature - Saint John, VI

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).

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
Saint John, VI

Average rainfall - Saint John, VI

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
Saint John, VI

Average rainfall days - Saint John, VI

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
Saint John, VI

Average sea temperature - Saint John, VI

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 / Average sunshine
Saint John, VI

Average daylight / Average sunshine - Saint John, VI

The month with the longest days is June (Average daylight: 13h and 13min).
The month with the shortest days is December (Average daylight: 11h and 3min).

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
Saint John, VI

Average UV index - Saint John, VI

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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