The climate in Coimbra during September can be summarized as warm and reasonably dry.
September is in the fall / autumn in Coimbra and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 27°C (80°F), whilst at night 15°C (58°F) is normal.
Daytime temperature | 26.9°C 80.4°F |
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Nightly temperature | 14.5°C 58.1°F |
Average temperature | 20.7°C 69.3°F |
Daily sunshine | 8.5 hrs |
Avg rainfall | 48 mm 1.9 ins |
Rainy days | 9 days |
Sea temperature | 18.6°C 65.4°F |
Humidity | 69% |
Windspeed | 10.4kph 7 mph |
On average September is the 4th driest month of the year in Coimbra with around 48mm 1.9 inches of rain making it a reasonably 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 8.5 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 Coimbra in September 2025.
Best places to visit in September
Hottest month: | July | 27.9°C 82.2°F |
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Driest month: | July | 11mm 0.4ins |
Sunniest month: | August | 11.1hrs |
Coldest month: | January | 14°C 57.2°F |
Wettest month: | February | 138mm 5.4ins |