The hottest month in El Salvador is March when the average maximum temperature is 35°, average temperature is 29° and average minimum temperature is 23°.
The coolest month in El Salvador is December when the average maximum temperature is 34°, average temperature is 27° and average minimum temperature is 21°.
The longest days in El Salvador are in June, with an average of 12.9 hours of daylight per day. January has the shortest days with an average of 11.4 hours of daylight per day.
The sunniest days in El Salvador are in February which has the most hours of sunshine per day with an average of 7.6 hours of sunshine per day, making it a quite sunny month with some cloud cover. October 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 April when it reaches 14.8 and lowest in December when it reaches 9.6.
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 El Salvador are found in June when they peak at 29° and lowest in February when they dip to 27°.
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.
The wettest month in El Salvador is September with 11.7cm of rain and June has the most days of rain with 17 days with some rain, a wet time to visit the beach.
The driest month in El Salvador is February with 0cm of rain and the least days of rain with 1 days with some rain, an extremely dry time to visit the beach.
The most humid month in El Salvador 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 El Salvador is January with a dew point of 19° which is somewhat uncomfortable for most people in cities but fine on a beach.
The most windy month in El Salvador is April when the average maximum windspeed is 20kmh and the average wind speed is 8kmh.
The least windy month in El Salvador is October when the average maximum windspeed is 14kmh and the average wind speed is 5kmh.