You can plan your beach trip with this snapshot of the seasons in Marsa Alam: The hottest months are usually August and July with an average temp of 88°F, while the coldest months are January and February with an average of 68°F. From January through March, the daytime average is 78°F and the nighttime average is 61°F. Between April and June, temperatures average 93°F during the day and 71°F at night. July through September averages 96°F during the day and 82°F at night. In October-December, the average temperature is 87°F during the day and 64°F at night.