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