World Resorts Mexico Cancun Weather

Cancun Sea Temperature in September

Average sea water temperature in September:
+84.8°F
Minimum sea water temperature in September: 87.1°F
Maximum sea water temperature in September: 82.4°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 85.0°F. The highest and lowest sea temperatures during the month were 85.8°F and 84.4°F.

Monthly sea water temperature in Cancun, °F

Which Mexico resorts have warmest sea in September?

Place name September 2025 September 2024
San Blas 87.8°F 88.2°F
Manzaltan 87.8°F 88.0°F
Mazatlan 87.8°F 88.0°F
San Pancho 87.4°F 87.8°F
Sayulita 87.3°F 87.7°F
Punta Villela 87.3°F 87.6°F
Punta Mita 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
Puerto Vallarta 86.9°F 86.8°F
Nuevo Vallarta 86.9°F 86.9°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 Cancun

Sunniest months:
July 15 days
April 15 days
May 14 days
Warmest months:
August 88.8 °F
July 88.7 °F
September 87.5 °F
Warmest sea temp:
August 85.1 °F
September 84.8 °F
July 84.4 °F
Coldest months:
January 78.9 °F
February 80.6 °F
December 80.9 °F
Rainiest months:
October 8 days
September 8 days
June 7 days
Windiest months:
March 11.8 mph
April 11.5 mph
May 10.8 mph

Cancun on a weather map

Cancun
+77°F
W 8 mph
Feels like: +82°F
Precip.: 0%
Places in Mexico:
Name
°F
+73°F
+77°F
+79°F
+70°F
+73°F
+70°F
+72°F
+79°F
+72°F
+77°F
+79°F
24 Hours Forecast
Cancun
Local time: 02:48
December 05, friday
0300
77°F
W
8 mph
0600
77°F
W
9 mph
0900
79°F
W
7 mph
1200
86°F
W
11 mph
1500
90°F
NW
9 mph
1800
82°F
NW
8 mph
2100
79°F
NW
8 mph
December 06, saturday
0000
77°F
NW
8 mph
Units of measurement: °C / °F