The hottest month in Anguilla Island is September when the average maximum temperature is 31°, average temperature is 29° and average minimum temperature is 27°.
The coolest month in Anguilla Island is February when the average maximum temperature is 27°, average temperature is 26° and average minimum temperature is 24°.
The longest days in Anguilla Island 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 Anguilla Island are in August which has the most hours of sunshine per day with an average of 9.8 hours of sunshine per day, making it a sunny month with few clouds. March has the least sunshine with an average of 5.2 hours of sunshine per day, making it a sunny month that is overcast at times.
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.
The warmest sea water temperatures in Anguilla Island are found in September when they peak at 28° and lowest in March when they dip to 26°.
The sea is best for swimming between June and December when the temperature is above 27° which is very warm and ideal for relaxing and swimming for the whole day.
The wettest month in Anguilla Island is May with 3.1cm of rain and December has the most days of rain with 8.4 days with some rain, a dry time to visit the beach.
The driest month in Anguilla Island is January with 0.6cm of rain and March has the fewest days of rain with 5.1 days with some rain, a dry time to visit the beach.
The most humid month in Anguilla Island is September with a dew point (an indicator of humidity) of 24° 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 Anguilla Island is February with a dew point of 21° which is somewhat uncomfortable for most people in cities but fine on a beach.
The most windy month in Anguilla Island is July when the average maximum windspeed is 29kmh and the average wind speed is 25kmh.
The least windy month in Anguilla Island is September when the average maximum windspeed is 23kmh and the average wind speed is 19kmh.