The hottest month in Marsa Alam is August when the average maximum temperature is 36°, average temperature is 32° and average minimum temperature is 29°.
The coolest month in Marsa Alam is January when the average maximum temperature is 22°, average temperature is 18° and average minimum temperature is 15°.
The longest days in Marsa Alam are in June, with an average of 13.7 hours of daylight per day. December has the shortest days with an average of 10.6 hours of daylight per day.
The sunniest days in Marsa Alam are in April which has the most hours of sunshine per day with an average of 10.1 hours of sunshine per day, making it a very sunny and pleasant month with long bright days. January has the least sunshine with an average of 7.1 hours of sunshine per day, making it a quite sunny month with some cloud cover.
The ultraviolet index is the highest in May when it reaches 12.9 and lowest in December when it reaches 5.5.
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 Marsa Alam are found in August when they peak at 30° and lowest in January when they dip to 23°.
The sea is best for swimming between June and December when the temperature is above 26° which is very warm and ideal for relaxing and swimming for the whole day.
The most humid month in Marsa Alam is August with a dew point (an indicator of humidity) of 18° which is OK for most but slightly uncomfortable for some.
The least humid month in Marsa Alam is January with a dew point of 11° which is very comfortable.
The most windy month in Marsa Alam is June when the average maximum windspeed is 36kmh and the average wind speed is 22kmh.
The least windy month in Marsa Alam is December when the average maximum windspeed is 27kmh and the average wind speed is 18kmh.