Annual average weather for Trunk Bay, St John Island, US Virgin Islands

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Annual Average Weather for Trunk Bay, St John Island, US Virgin Islands

The annual average maximum daily temperature is 29.9°C (85.7°F) which is very warm and perfect for sunbathing on clear days. The annual average water temperature is typically 27.3°C (81.2°F) which is very warm and ideal for relaxing and swimming for the whole day. Annually there are on average 18.8 days of rain per month and 7.4 hours of sun per day.

When is the best time to visit Trunk Bay?

The best months to visit Trunk Bay are January, February, March, April, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.

The sea is best for swimming between June and November when the sea temperature is above the average 27°C (81°F) which is very warm and ideal for relaxing and swimming for the whole day.

Can you sunbathe in Trunk Bay year round?

Yes, you can sunbathe in Trunk Bay all year round.

The coolest month in Trunk Bay is January when the average maximum temperature is 28°C (83°F), average temperature is 26°C (78°F) and average minimum temperature is 23°C (73°F).

More info about the annual temperatures and sunshine.

Can you swim in Trunk Bay year round?

Yes, you can swim in Trunk Bay all year round.

The warmest sea water temperatures in Trunk Bay are found in September when they peak at 28°C (83°F) and lowest in March when they dip to 26°C (79°F).

The sea is excellent for swimming all year round as the water temperature is very warm and ideal for relaxing and swimming for the whole day.

More info about the annual sea temperatures

When is the hottest month in Trunk Bay?

The hottest month in Trunk Bay is July when the average maximum temperature is very hot and perfect for sunbathing on clear days 32°C (89°F), average temperature is 29°C (84°F) and average minimum temperature is 26°C (79°F).

More info about the annual temperatures and sunshine.

When is the coldest month in Trunk Bay?

The coolest month in Trunk Bay is January when the average maximum temperature is 28°C (83°F), average temperature is 26°C (78°F) and average minimum temperature is 23°C (73°F).

More info about the annual temperatures and sunshine

When is the sunniest month in Trunk Bay?

The sunniest days in Trunk Bay are in April which has the most hours of sunshine per day. In April the sunshine percentage is 68% making it sunny but overcast at times. The hours of sunshine per day are 8.4hrs making the days long and bright.

More info about the annual sunshine.

When is the least sunny month in Trunk Bay?

October has the least sunshine. In October the sunshine percentage is 53% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 6.7 hours of sunshine per day.

More info about the annual sunshine.

When is the driest month in Trunk Bay?

The driest month in Trunk Bay is February with 4.5cm (1.8inches) of rain and March has the fewest days of rain with 12.5 days with some rain, a pretty wet time to visit the beach.

More info about the annual rainfall

When is the wettest month in Trunk Bay?

The wettest month in Trunk Bay is October with 19.7cm (7.8inches) of rain and November has the most days of rain with 22.8 days with some rain, a very wet time to visit the beach.

More info about the annual rainfall.

When is the sea the coldest in Trunk Bay?

The coldest sea water temperatures in Trunk Bay are found in March when they dip to 26°C (79°F) which is very warm and ideal for relaxing and swimming for the whole day.

More info about the annual sea temperatures.

When is the sea the warmest in Trunk Bay?

The warmest sea water temperatures in Trunk Bay are found in September when they peak at 28°C (83°F) which is very warm and ideal for relaxing and swimming for the whole day.

More info about the annual sea temperatures.

When is the most humid month in Trunk Bay?

The most humid month in Trunk Bay is September with a dew point (an indicator of humidity) of 25°C (77°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.

More info about the annual humidity.

When is the least humid month in Trunk Bay?

The least humid month in Trunk Bay is February with a dew point of 21°C (70°F) which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan.

More info about the annual humidity.

When is the windiest month in Trunk Bay?

The most windy month in Trunk Bay is July when the average maximum windspeed is 32KM/H (20MPH) and the average wind speed is 18KM/H (11MPH).

More info about the annual wind conditions.

Annual Temperature for Trunk Bay

The hottest month in Trunk Bay is July when the average maximum temperature is 32°C (89°F), average temperature is 29°C (84°F) and average minimum temperature is 26°C (79°F).

The coolest month in Trunk Bay is January when the average maximum temperature is 28°C (28°F), average temperature is 26°C (78°F) and average minimum temperature is 23°C (73°F).

Annual Sunshine for Trunk Bay

The longest days in Trunk Bay are in June, with an average of 13.2 hours of daylight per day. December has the shortest days with an average of 11 hours of daylight per day.

The sunniest days in Trunk Bay are in April which has the most hours of sunshine per day. The sunshine percentage is 68% making it sunny but overcast at times. The hours of sunshine per day are 8.4hrs making the days long and bright.

October has the least sunshine. The sunshine percentage is 53% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 6.7 hours of sunshine per day.

The ultraviolet index is the highest in April when it reaches 13.5 and lowest in December when it reaches 7.5.

An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Annual Sea Temperature for Trunk Bay

The warmest sea water temperatures in Trunk Bay are found in September when they peak at 28°C (83°F) and lowest in March when they dip to 26°C (79°F).

The sea is excellent for swimming all year round as the water temperature is very warm and ideal for relaxing and swimming for the whole day.

Annual Rainfall for Trunk Bay

The wettest month in Trunk Bay is October with 19.7cm (7.8inches) of rain and November has the most days of rain with 22.8 days with some rain, a very wet time to visit the beach.

The driest month in Trunk Bay is February with 4.5cm (1.8inches) of rain and March has the fewest days of rain with 12.5 days with some rain, a pretty wet time to visit the beach.

Annual Humidity for Trunk Bay

The most humid month in Trunk Bay is September with a dew point (an indicator of humidity) of 25°C (77°F) which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning.

The least humid month in Trunk Bay is February with a dew point of 21°C (70°F) which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan.

Annual Wind Speed for Trunk Bay

The most windy month in Trunk Bay is July when the average maximum windspeed is 32KM/H (20MPH) and the average wind speed is 18KM/H (11MPH).

The least windy month in Trunk Bay is September when the average maximum windspeed is 27KM/H (17MPH) and the average wind speed is 14KM/H (9MPH).

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