There is little seasonal variation in temperature. The average high ranges from 81 F in January to 90 F in July and August. Average low temperatures range from 67 F in January to 78 in June and July.
Winter is the driest season, while summer is the wettest. Average monthly precipitation ranges from .28 inches in February to 2.62 inches in August.
Summer is the most humid season. It is least humid in late winter and early in spring. Relative humidity averages range from 35 percent in March to 66 in September.
The sunniest days occur in winter. The least amount of sunshine is in late summer and early fall. The average daily hours of sunshine range from five in August, September and October to nine in February.
The prevailing wind is from the east. There is usually a fairly strong breeze associated with the Gulfstream ocean current that passes the island.
Isla Mujeres lies in the hurricane belt. September and October are the months when tropical storms or hurricanes are most likely.
