The climate in Hīrna during September can be summarized as warm and wet.
September is in the fall / autumn in Hīrna and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 27°C (80°F), whilst at night 14°C (57°F) is normal.
Daytime temperature | 26.9°C 80.4°F |
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Nightly temperature | 14.1°C 57.4°F |
Average temperature | 20.5°C 68.9°F |
Daily sunshine | 8.3 hrs |
Avg rainfall | 124 mm 4.9 ins |
Rainy days | 8 days |
Sea temperature | 30.2°C 86.4°F |
Humidity | 66% |
Windspeed | 6.5kph 4 mph |
On average September is the 3rd wettest month of the year in Hīrna with around 124mm 4.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.3 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 Hīrna in September 2025.
Best places to visit in September
Hottest month: | June | 28.8°C 83.8°F |
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Driest month: | December | 7mm 0.3ins |
Sunniest month: | December | 10.1hrs |
Coldest month: | December | 24.3°C 75.7°F |
Wettest month: | August | 209mm 8.2ins |