Guarujá Weather in September
What's the weather like in Guarujá (São Paulo) in September 2025?
The climate in Guarujá during September can be summarized as warm, humid and wet.
September is in the spring in Guarujá and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 24°C (75°F), whilst at night 16°C (61°F) is normal.
| Daytime temperature | 24°C 75.2°F |
|---|---|
| Nightly temperature | 16.2°C 61.2°F |
| Average temperature | 20.1°C 68.2°F |
| Daily sunshine | 4 hrs |
| Avg rainfall | 157 mm 6.2 ins |
| Rainy days | 14 days |
| Sea temperature | 20.9°C 69.6°F |
| Humidity | 81% |
| Windspeed | 9.4kph 6 mph |
On average September is the 4th driest month of the year in Guarujá with around 157mm 6.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 4 hours of sunshine per day.
September temperatures in Guarujá
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 Guarujá in September 2025.
Other monthly averages
Best places to visit in September
Guarujá weather stats
| Hottest month: | February | 28.6°C 83.5°F |
|---|---|---|
| Driest month: | August | 106mm 4.2ins |
| Sunniest month: | July | 5.2hrs |
| Coldest month: | July | 22.8°C 73°F |
| Wettest month: | January | 331mm 13ins |
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