March weather forecast
Saint John, VI

The arrival of March in Saint John marks a minor transition from February. The weather changes balance out, offering more daylight hours and increased sunshine. Out of all standout weather characteristics in March, an increase in UV index up to 12 alongside 2.2" (56mm) of rainfall paints a clear picture of a typical March weather pattern. The month carries forward the city's signature tropical weather, with bountiful sunshine and occasional rain showers.

Temperature

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

Rainfall

In Saint John, in March, during 10 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Saint John, during the entire year, the rain falls for 156 days and collects up to 49.69" (1262mm) of precipitation.

Ocean temperature

January through April, with an average ocean temperature of 78.8°F (26°C), are months with the coldest seawater in Saint John.
Note: In water temperatures ranging between 77°F (25°C) and 84.2°F (29°C), activities such as swimming and diving become highly pleasurable for long durations.

Daylight

In March, the average length of the day is 12h and 3min.
On the first day of the month, sunrise is at 6:37 am and sunset at 6:25 pm. On the last day of March, sunrise is at 6:13 am and sunset at 6:32 pm AST.

Sunshine

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

UV index

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. A UV Index of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In March, an average UV index of 12 transforms into the following instructions:
Put into action all important safeguards, unprotected skin may burn swiftly. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Frequent application of a broad-spectrum SPF 30+ sunscreen is crucial, reapply it every two hours or immediately post swimming or outdoor exercise. Stay cautious! Sand and water reflections increase UV radiation potency.