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 months of January through March and December see the lowest levels of Saint John's temperatures, averaging a high of 82.4°F (28°C).

Rainfall

In March, the rain falls for 10 days. Throughout March, 2.24" (57mm) of precipitation is 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.
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over 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

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

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 12 in March transforms into this advice:
Put into action all important safeguards, unprotected skin may burn swiftly. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Broad-spectrum sunscreen with an SPF of 30 or above should be applied generously and reapplied every two hours and right after any outdoor activity or swim. Beware! Reflections from sand and water can intensify the Sun's UV radiation.