World Resorts Mexico Cozumel Weather

Cozumel sea water temperature

Current sea water temperature:
+81.7°F
Minimum sea water temperature in January: 82.8°F
Maximum sea water temperature in January: 77.9°F
Average sea water temperature in January: 80.6°F

Sea water temperature for the last 10 days:

January 1 81.7°F December 27 82.2°F
December 31 82.0°F December 26 82.4°F
December 30 82.0°F December 25 82.6°F
December 29 82.0°F December 24 82.6°F
December 28 82.0°F December 23 82.8°F

When is the warmest sea in Cozumel?

Based on the data about daily sea water temperature for the last three years the warmest sea in Cozumel was noticed in September, August and October.

Monthly Sea Temperatures in Cozumel, °F

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 85.9°F. The highest and lowest sea temperatures during the month were 86.7°F and 84.9°F.

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 85.6°F. The highest and lowest sea temperatures during the month were 86.2°F and 85.1°F.

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 85.7°F. The highest and lowest sea temperatures during the month were 86.5°F and 84.7°F.

Best time for vacation in Cozumel

Sunniest months:
July 12 days
April 12 days
May 11 days
Warmest months:
August 87.6 °F
July 87.6 °F
September 87.0 °F
Warmest sea temp:
September 85.3 °F
August 85.1 °F
October 84.9 °F
Coldest months:
January 79.1 °F
February 80.3 °F
December 81.0 °F
Rainiest months:
October 9 days
September 8 days
June 8 days
Windiest months:
March 10.5 mph
January 10.3 mph
June 10.1 mph

Cozumel on a weather map

Cozumel
+70°F
S 11 mph
Feels like: +70°F
Precip.: 0%
Places in Mexico:
Name
°F
+73°F
+70°F
+70°F
+68°F
+75°F
+64°F
+61°F
+64°F
24 Hours Forecast
Cozumel
Local time: 04:07
January 01, thursday
0600
70°F
S
9 mph
0900
72°F
S
8 mph
1200
73°F
SW
6 mph
1500
73°F
SW
9 mph
1800
73°F
W
9 mph
2100
72°F
W
9 mph
January 02, friday
0000
72°F
W
8 mph
0300
72°F
W
7 mph
Units of measurement: °C / °F