May weather forecast
Saint John, VI

May brings a subtle warm up to the Virgin Islands' Saint John. The gentle rise in temperature when paired with sea breezes makes May weather a delightful experience for beach goers and sightseers. Despite it being a warm month, the significant weather change is, May receives the heaviest rainfall so far in the year, at 5.1" (130mm). This mix of balmy temperatures and periodic showers creates an appealing tropical atmosphere.

Temperature

Saint John marks the arrival of May with an average high-temperature of a still moderately hot 84.2°F (29°C), identical to April. In the month of May, Saint John's average low-temperature falls to a still warm 73.4°F (23°C).

Rainfall

In May, the rain falls for 12 days. Throughout May, 5.08" (129mm) of precipitation is accumulated. Throughout the year, there are 156 rainfall days, and 49.69" (1262mm) of precipitation is accumulated.

Ocean temperature

In Saint John, the average seawater temperature in May is 80.6°F (27°C).
Note: Surface water temperatures falling between 77°F (25°C) and 84.2°F (29°C) are regarded as prime and extremely agreeable for enduring periods during any water activity.

Daylight

In May, the average length of the day is 13h and 0min.
On the first day of May, sunrise is at 5:51 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 6:51 pm AST.

Sunshine

In Saint John, the average sunshine in May is 8h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 12 in May translates into the following recommendations:
Implement all necessary safeguards, unprotected skin might suffer burns rapidly. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Boost your sun resistance with garments that are densely woven yet spacious. Use liberally and reapply a broad-spectrum SPF 30+ sunscreen every two hours, or straight away after any outdoor workout or swim. Notice! The Sun's UV exposure elevates with sand and water reflections.