The climate in São Francisco do Conde during September can be summarized as hot, humid and a little damp.
September is in the spring in São Francisco do Conde and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 19°C (66°F) is normal.
| Daytime temperature | 27.7°C 81.9°F |
|---|---|
| Nightly temperature | 18.7°C 65.7°F |
| Average temperature | 23.2°C 73.8°F |
| Daily sunshine | 6 hrs |
| Avg rainfall | 88 mm 3.5 ins |
| Rainy days | 17 days |
| Sea temperature | 25.7°C 78.3°F |
| Humidity | 83% |
| Windspeed | 10.8kph 7 mph |
On average September is the 2nd driest month of the year in São Francisco do Conde with around 88mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 hours of sunshine per day.
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 Francisco do Conde in September 2025.
Best places to visit in September
| Hottest month: | January | 31°C 87.8°F |
|---|---|---|
| Driest month: | January | 79mm 3.1ins |
| Sunniest month: | March | 6.7hrs |
| Coldest month: | July | 25.9°C 78.6°F |
| Wettest month: | May | 282mm 11.1ins |