World Resorts Mexico Cozumel Weather

Cozumel sea water temperature

Current sea water temperature:
+81.1°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: 80.7°F

Sea water temperature for the last 10 days:

January 11 81.1°F January 6 81.7°F
January 10 81.3°F January 5 81.5°F
January 9 81.7°F January 4 81.5°F
January 8 81.7°F January 3 81.7°F
January 7 81.7°F January 2 81.5°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
+77°F
S 12 mph
Feels like: +81°F
Precip.: 0%
Places in Mexico:
Name
°F
+75°F
+77°F
+77°F
+68°F
+75°F
+75°F
+75°F
+77°F
24 Hours Forecast
Cozumel
Local time: 22:10
January 12, monday
0000
75°F
S
10 mph
0300
75°F
S
10 mph
0600
77°F
SW
10 mph
0900
77°F
SW
12 mph
1200
79°F
SW
14 mph
1500
79°F
SW
12 mph
1800
77°F
SW
10 mph
2100
77°F
SW
11 mph
Units of measurement: °C / °F