San Francisco del Mar Weather in September
What's the weather like in San Francisco del Mar (Oaxaca) in September 2025?
The climate in San Francisco del Mar during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in San Francisco del Mar and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 32.4°C 90.2°F |
|---|---|
| Nightly temperature | 22.7°C 72.8°F |
| Average temperature | 27.5°C 81.5°F |
| Daily sunshine | 5.2 hrs |
| Avg rainfall | 305 mm 12 ins |
| Rainy days | 14 days |
| Sea temperature | 29.5°C 85.1°F |
| Humidity | 74% |
| Windspeed | 9.7kph 6 mph |
On average September is the wettest month of the year in San Francisco del Mar with around 305mm 12 inches of rain making it a very wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.2 hours of sunshine per day.
September temperatures in San Francisco del Mar
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 San Francisco del Mar in September 2025.
Other monthly averages
Best places to visit in September
San Francisco del Mar weather stats
| Hottest month: | May | 34.9°C 94.8°F |
|---|---|---|
| Driest month: | January | 0mm 0ins |
| Sunniest month: | February | 8.7hrs |
| Coldest month: | January | 31.2°C 88.2°F |
| Wettest month: | September | 305mm 12ins |
© Google
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