São João Batista Weather in September
What's the weather like in São João Batista (Maranhão) in September 2025?
The climate in São João Batista during September can be summarized as hot, humid and dry.
September is in the spring in São João Batista and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 22°C (72°F) is normal.
| Daytime temperature | 32.8°C 91°F |
|---|---|
| Nightly temperature | 22.4°C 72.3°F |
| Average temperature | 27.6°C 81.7°F |
| Daily sunshine | 8.5 hrs |
| Avg rainfall | 24 mm 0.9 ins |
| Rainy days | 8 days |
| Sea temperature | 27.2°C 81°F |
| Humidity | 75% |
| Windspeed | 11.9kph 7 mph |
On average September is the 2nd driest month of the year in São João Batista with around 24mm 0.9 inches of rain making it a dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.5 hours of sunshine per day.
September temperatures in São João Batista
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 São João Batista in September 2025.
Other monthly averages
Best places to visit in September
São João Batista weather stats
| Hottest month: | November | 32.9°C 91.2°F |
|---|---|---|
| Driest month: | October | 20mm 0.8ins |
| Sunniest month: | August | 8.8hrs |
| Coldest month: | July | 31.1°C 88°F |
| Wettest month: | March | 330mm 13ins |
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