Arroyo Salado Weather in September
What's the weather like in Arroyo Salado (María Trinidad Sánchez) in September 2025?
The climate in Arroyo Salado during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Arroyo Salado and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 23°C (72°F) is normal.
| Daytime temperature | 31.8°C 89.2°F |
|---|---|
| Nightly temperature | 22.5°C 72.4°F |
| Average temperature | 27.1°C 80.8°F |
| Daily sunshine | 7.7 hrs |
| Avg rainfall | 141 mm 5.6 ins |
| Rainy days | 15 days |
| Sea temperature | 29°C 84.1°F |
| Humidity | 76% |
| Windspeed | 9.4kph 6 mph |
On average September is the 6th driest month of the year in Arroyo Salado with around 141mm 5.6 inches of rain making it a wet time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.7 hours of sunshine per day.
September temperatures in Arroyo Salado
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 Arroyo Salado in September 2025.
Other monthly averages
Best places to visit in September
Arroyo Salado weather stats
| Hottest month: | September | 31.5°C 88.7°F |
|---|---|---|
| Driest month: | March | 95mm 3.7ins |
| Sunniest month: | March | 8hrs |
| Coldest month: | January | 28.3°C 82.9°F |
| Wettest month: | November | 243mm 9.6ins |
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