World Resorts Mexico Cozumel Weather

Cozumel Sea Temperature in September

Average sea water temperature in September:
+85.3°F
Minimum sea water temperature in September: 87.3°F
Maximum sea water temperature in September: 82.9°F

Daily 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.

Monthly sea water temperature in Cozumel, °F

Which Mexico resorts have warmest sea in September?

Place name September 2025 September 2024
San Blas 87.8°F 88.2°F
Mazatlan 87.8°F 88.0°F
Manzaltan 87.8°F 88.0°F
San Pancho 87.4°F 87.8°F
Sayulita 87.3°F 87.7°F
Punta Mita 87.3°F 87.6°F
Punta Villela 87.3°F 87.6°F
Puerto Arista 87.2°F 87.4°F
La Penita de Jaltemba 87.2°F 87.5°F
Rincon de Guayabitos 87.2°F 87.5°F
Ciudad del Carmen 87.1°F 87.4°F
Campeche 87.0°F 87.7°F
San Jose del Cabo 87.0°F 85.6°F
Nuevo Vallarta 86.9°F 86.9°F
Puerto Vallarta 86.9°F 86.8°F
San Patricio 86.8°F 87.0°F
Chetumal 86.8°F 87.6°F
La Manzanilla 86.7°F 87.0°F
Manzanillo 86.7°F 87.0°F
Playa Azul 86.7°F 87.0°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
W 12 mph
Feels like: +81°F
Precip.: 0%
Places in Mexico:
Name
°F
+84°F
+75°F
+77°F
+86°F
+88°F
+79°F
+77°F
+93°F
+64°F
+77°F
24 Hours Forecast
Cozumel
Local time: 17:29
December 26, friday
1800
77°F
W
12 mph
2100
77°F
W
12 mph
December 27, saturday
0000
77°F
W
11 mph
0300
75°F
W
11 mph
0600
75°F
W
10 mph
0900
77°F
W
9 mph
1200
79°F
W
11 mph
1500
79°F
W
10 mph
Units of measurement: °C / °F