The hottest month in Grand Anse is April when the average maximum temperature is 32°, average temperature is 29° and average minimum temperature is 26°.
The coolest month in Grand Anse is July when the average maximum temperature is 29°, average temperature is 27° and average minimum temperature is 25°.
The longest days in Grand Anse are in December, with an average of 12.4 hours of daylight per day. May has the shortest days with an average of 11.9 hours of daylight per day.
The sunniest days in Grand Anse are in December which has the most hours of sunshine per day with an average of 6.1 hours of sunshine per day, making it a quite sunny month with some cloud cover. May has the least sunshine with an average of 4.6 hours of sunshine per day, making it a sunny month that is overcast at times.
The ultraviolet index is the highest in February when it reaches 15.5 and lowest in June when it reaches 10.5.
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.
The warmest sea water temperatures in Grand Anse are found in April when they peak at 30° and lowest in July when they dip to 25°.
The sea is best for swimming between November and May when the temperature is above 28° which is very warm and ideal for relaxing and swimming for the whole day.
The wettest month in Grand Anse is January with 7.7cm of rain and the most days of rain with 23.1 days with some rain, a very wet time to visit the beach.
The driest month in Grand Anse is August with 0.2cm of rain and February has the fewest days of rain with 15.9 days with some rain, a wet time to visit the beach.
The most humid month in Grand Anse is April with a dew point (an indicator of humidity) of 25° 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 Grand Anse is August with a dew point of 23° which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan.
The most windy month in Grand Anse is September when the average maximum windspeed is 32kmh and the average wind speed is 21kmh.
The least windy month in Grand Anse is April when the average maximum windspeed is 20kmh and the average wind speed is 8kmh.