Weather at Mexico Beaches in September

This page pulls together weather information for September at popular resort beaches in Mexico.

You can compare this month's averages for temperature, total rainfall and ocean temperature at vacation spots along the Pacific Ocean and the Caribbean Sea.

The temperatures here are in degrees Fahrenheit and Celsius. Total rainfall is given in days, inches and millimetres.

September is the rainiest month of the year along the Pacific Ocean in Mexico. At the wettest spot, Puerto Vallarta, it rains on average nearly 17 inches (430 mm) this month.

You can usually find dry weather in the desert climate of Cabo San Lucas. But early September is a peak time for tropical storms on the North Pacific and in some years the storms do reach land on the Baja Peninsula.

The Atlantic hurricane season also peaks in early to mid September. Still, the chance of actually encountering a hurricane in Mexico remains quite low. During a week's holiday in September at Cancun or the Mayan Riviera, the odds are 1 in 100 that you'll see a hurricane.

Temperature

Average September temperatures
High °F Low °F Beach High °C Low °C
Pacific Beaches
93 74 Cabo San Lucas 34 23
88 77 Mazatlán 31 25
87 69 Puerto Vallarta 31 21
89 76 Manzanillo 32 25
90 74 Zihuatanejo 32 24
89 76 Acapulco 32 25
90 70 Huatulco 32 21
Caribbean Beaches
93 76 Cancun 34 24
89 74 Cozumel 32 24
90 69 Tulum 32 21

Rainfall

Total average September precipitation
Days Beach Inches Milli­metres
Pacific Beaches
4 Cabo San Lucas 4.6 116
12 Mazatlán 8.9 227
20 Puerto Vallarta 16.9 429
16 Manzanillo 10.7 271
14 Zihuatanejo 13.5 343
15 Acapulco 12.1 308
14 Huatulco 12.6 320
Caribbean Beaches
14 Cancun 7.2 184
15 Cozumel 9.5 240
11 Tulum 6.2 158

Ocean Temperature

Average water temperature in September at beaches in Mexico
Beach °F °C
Pacific Beaches
Cabo San Lucas 83 28
Mazatlán 85 30
Puerto Vallarta 85 30
Manzanillo 85 30
Zihuatanejo 85 29
Acapulco 85 29
Huatulco 85 29
Caribbean Beaches
Cancun 82 28
Cozumel 83 28
Tulum 83 28
References

CONAGUA. Comisión Nacional Del Agua. Servicio Meteorológico Nacional, México. Normales Climatológicas por Estación

NOAA. National Oceanographic Data Center. Ocean Climate Laboratory. World Ocean Atlas 2009.

NOAA. National Weather Service. National Hurricane Center.

Mexico Beaches
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