The hottest month in Útila is August when the average maximum temperature is 31°, average temperature is 27° and average minimum temperature is 23°.
The coolest month in Útila is January when the average maximum temperature is 27°, average temperature is 23° and average minimum temperature is 20°.
The longest days in Útila are in June, with an average of 13.1 hours of daylight per day. December has the shortest days with an average of 11.2 hours of daylight per day.
The sunniest days in Útila are in March which has the most hours of sunshine per day with an average of 8.1 hours of sunshine per day, making it a sunny month with few clouds. June 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 14.4 and lowest in December when it reaches 8.7.
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 Útila are found in June when they peak at 29° and lowest in August when they dip to 19°.
The sea is best for swimming between December and June when the temperature is above 24° which is warm and pleasant for relaxing and swimming for long periods.
The wettest month in Útila is January with 140.6cm of rain and October has the most days of rain with 15.8 days with some rain, a very wet time to visit the beach.
The driest month in Útila is December with 19.8cm of rain and April has the fewest days of rain with 3.6 days with some rain, a dry time to visit the beach.
The most humid month in Útila is September 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 Útila is January with a dew point of 22° 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 Útila is July when the average maximum windspeed is 23kmh and the average wind speed is 6kmh.
The least windy month in Útila is December when the average maximum windspeed is 15kmh and the average wind speed is 5kmh.