Sines Weather in September
What's the weather like in Sines (Setúbal) in September 2025?
The climate in Sines during September can be summarized as warm and dry.
September is in the fall / autumn in Sines and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 27°C (80°F), whilst at night 17°C (62°F) is normal.
| Daytime temperature | 26.6°C 79.9°F |
|---|---|
| Nightly temperature | 16.8°C 62.3°F |
| Average temperature | 21.7°C 71.1°F |
| Daily sunshine | 9.3 hrs |
| Avg rainfall | 20 mm 0.8 ins |
| Rainy days | 4 days |
| Sea temperature | 21°C 69.9°F |
| Humidity | 64% |
| Windspeed | 13kph 8 mph |
On average September is the 4th driest month of the year in Sines with around 20mm 0.8 inches of rain making it a dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.3 hours of sunshine per day.
September temperatures in Sines
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 Sines in September 2025.
Other monthly averages
Best places to visit in September
Sines weather stats
| Hottest month: | August | 27.8°C 82°F |
|---|---|---|
| Driest month: | July | 3mm 0.1ins |
| Sunniest month: | August | 11.8hrs |
| Coldest month: | January | 14.6°C 58.3°F |
| Wettest month: | January | 97mm 3.8ins |
© Google
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