Rosarito Weather in September
What's the weather like in Rosarito (Baja California) in September 2025?
The climate in Rosarito during September can be summarized as warm, humid and very dry.
September is in the fall / autumn in Rosarito and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 15°C (60°F) is normal.
| Daytime temperature | 26°C 78.8°F |
|---|---|
| Nightly temperature | 15.4°C 59.7°F |
| Average temperature | 20.7°C 69.3°F |
| Daily sunshine | 9.3 hrs |
| Avg rainfall | 5 mm 0.2 ins |
| Rainy days | 1 days |
| Sea temperature | 20.5°C 68.9°F |
| Humidity | 76% |
| Windspeed | 13.3kph 8 mph |
On average September is the 5th driest month of the year in Rosarito with around 5mm 0.2 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 9.3 hours of sunshine per day.
September temperatures in Rosarito
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Rosarito in September 2025.
Other monthly averages
Best places to visit in September
Rosarito weather stats
| Hottest month: | August | 26.1°C 79°F |
|---|---|---|
| Driest month: | June | 1mm 0ins |
| Sunniest month: | January | 8.6hrs |
| Coldest month: | January | 18.4°C 65.1°F |
| Wettest month: | January | 47mm 1.9ins |
© Google
Locations nearby
Top Mexico locations
- Acapulco
- Cabo San Lucas
- Cancún
- Cozumel
- Guadalajara
- Guanajuato
- Mazatlán
- Mexico City
- Oaxaca de Juárez
- Playa del Carmen
- Puebla
- Puerto Vallarta
- San Miguel de Allende
- Todos Santos
- Zihuatanejo