Matias Olímpio Weather in September
What's the weather like in Matias Olímpio (Piauí) in September 2025?
The climate in Matias Olímpio during September can be summarized as hot and dry.
September is in the spring in Matias Olímpio and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a warm 33°C (91°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 32.9°C 91.2°F |
|---|---|
| Nightly temperature | 22.9°C 73.2°F |
| Average temperature | 27.9°C 82.2°F |
| Daily sunshine | 9.6 hrs |
| Avg rainfall | 21 mm 0.8 ins |
| Rainy days | 9 days |
| Sea temperature | 26.8°C 80.2°F |
| Humidity | 67% |
| Windspeed | 13.3kph 8 mph |
On average September is the 3rd driest month of the year in Matias Olímpio with around 21mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.6 hours of sunshine per day.
September temperatures in Matias Olímpio
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 Matias Olímpio in September 2025.
Other monthly averages
Best places to visit in September
Matias Olímpio weather stats
| Hottest month: | October | 32.9°C 91.2°F |
|---|---|---|
| Driest month: | August | 19mm 0.7ins |
| Sunniest month: | August | 10hrs |
| Coldest month: | February | 30.6°C 87.1°F |
| Wettest month: | March | 355mm 14ins |
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