Measurements:
°C
°F
Cozumel
84°F
W 10 mph
Feels like: 92°F
Precip: 0%
World Resorts Mexico Cozumel Weather

Cozumel Sea Water Temperature

Current Sea Water Temperature:
+83.6°F
Maximum Sea Water Temperature in March: 85.6°F
Minimum Sea Water Temperature in March: 82.0°F
Average water temperature in March: 83.9°F

Sea Water Temperature for the Last 10 Days:

March 10 83.6°F March 05 83.4°F
March 09 83.6°F March 04 83.2°F
March 08 83.4°F March 03 83.2°F
March 07 83.4°F March 02 83.0°F
March 06 83.6°F March 01 82.6°F

When is the Warmest Sea for Cozumel?

According to our data for the last three years for Cozumel the highest average sea water temperature was in September, August and October.

Average Water Temperature by Month, °F

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Cozumel was 89.9°F. The maximum and minimum values were 88.8°F and 90.8°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Cozumel was 89.6°F. The maximum and minimum values were 89.0°F and 90.2°F respectively.

Sea Water Temperature in October

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Cozumel was 89.7°F. The maximum and minimum values were 88.6°F and 90.6°F respectively.

Best Time to Visit Cozumel
The most sunny months:
July 12 days
April 12 days
May 11 days
The most warm months:
August 91.8 °F
July 91.7 °F
September 91.1 °F
Warmest sea temperature:
September 89.2 °F
August 89.0 °F
October 88.8 °F
The most cold months:
January 82.3 °F
February 83.6 °F
December 84.4 °F
The most rainy months:
October 9 days
September 8 days
June 8 days
The most windy months:
March 10 mph
January 10 mph
February 10 mph

Cozumel on the Weather Map

24 Hours Weather Forecast
Cozumel
Local time: 15:14
10 mar, tuesday
1800 82°F
W
11 mph
2100 80°F
W
11 mph
11 mar, wednesday
0000 78°F
W
12 mph
0300 78°F
W
11 mph
0600 78°F
W
11 mph
0900 78°F
W
12 mph
1200 84°F
NW
11 mph
1500 84°F
NW
9 mph