Rio Formoso Weather in September
What's the weather like in Rio Formoso (Pernambuco) in September 2025?
The climate in Rio Formoso during September can be summarized as hot, humid and damp.
September is in the spring in Rio Formoso and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 20°C (68°F) is normal.
| Daytime temperature | 26.8°C 80.2°F |
|---|---|
| Nightly temperature | 19.8°C 67.6°F |
| Average temperature | 23.3°C 73.9°F |
| Daily sunshine | 7.6 hrs |
| Avg rainfall | 109 mm 4.3 ins |
| Rainy days | 23 days |
| Sea temperature | 26.4°C 79.5°F |
| Humidity | 78% |
| Windspeed | 11.5kph 7 mph |
On average September is the 5th driest month of the year in Rio Formoso with around 109mm 4.3 inches of rain making it a damp time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.6 hours of sunshine per day.
September temperatures in Rio Formoso
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 Rio Formoso in September 2025.
Other monthly averages
Best places to visit in September
Rio Formoso weather stats
| Hottest month: | February | 29.2°C 84.6°F |
|---|---|---|
| Driest month: | November | 53mm 2.1ins |
| Sunniest month: | November | 9.6hrs |
| Coldest month: | August | 26°C 78.8°F |
| Wettest month: | May | 344mm 13.5ins |
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