Lillesand Weather in September
What's the weather like in Lillesand (Aust-Agder county) in September 2025?
The climate in Lillesand during September can be summarized as mild and wet.
September is in the fall / autumn in Lillesand and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night 9°C (48°F) is normal.
| Daytime temperature | 14.8°C 58.6°F |
|---|---|
| Nightly temperature | 9.1°C 48.3°F |
| Average temperature | 11.9°C 53.4°F |
| Daily sunshine | 5 hrs |
| Avg rainfall | 126 mm 5 ins |
| Rainy days | 17 days |
| Sea temperature | 15.2°C 59.4°F |
| Humidity | 81% |
| Windspeed | 20.5kph 13 mph |
On average September is the 3rd wettest month of the year in Lillesand with around 126mm 5 inches of rain making it a wet 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 5 hours of sunshine per day.
September temperatures in Lillesand
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 Lillesand in September 2025.
Other monthly averages
Best places to visit in September
Lillesand weather stats
| Hottest month: | July | 18.8°C 65.8°F |
|---|---|---|
| Driest month: | April | 56mm 2.2ins |
| Sunniest month: | June | 9.8hrs |
| Coldest month: | February | 0.6°C 33.1°F |
| Wettest month: | October | 151mm 5.9ins |
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