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

Monthly weather forecast and climate
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).

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

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).

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).

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).

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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