Arendal
September
Weather in Arendal for September 2025
Your guide to Arendal weather in September - trends and predictions
The forecast for the first days of September 2025 in Arendal predicts temperatures to be around 16 °C, close to the historical average.
In general, the average temperature in Arendal at the beginning of September is 17 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 14.3 °C by the end of September.
Arendal in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 83.6 mm.
Temperatures
Rain 🌧️
13
Dry days
17
Rainy days
0
Snow days
17°/11°
Temperatures
20 km/h
Avg max wind
77 %
Avg humidity
Arendal Weather September
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Temperatures trend during September in Arendal
See the weather trend as well as the moving average line
September weather in Arendal day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 17° /11° | 0.8 mm | 3 | |
| 2 Sept. |  Sunny | 20° /11° | 0 mm | 4 | |
| 3 Sept. | Patchy rain possible | 16° /9° | 1.4 mm | 3 | |
| 4 Sept. | Patchy rain possible | 13° /11° | 3.4 mm | 3 | |
| 5 Sept. | Patchy rain possible | 14° /12° | 1 mm | 3 | |
| 6 Sept. | Patchy rain possible | 19° /13° | 0.1 mm | 5 | |
| 7 Sept. | Sunny | 20° /13° | 0 mm | 6 | |
| 8 Sept. |  Overcast | 20° /15° | 1.3 mm | 5 | |
| 9 Sept. | Overcast | 19° /14° | 2.2 mm | 5 | |
| 10 Sept. | Sunny | 20° /12° | 1.3 mm | 5 | |
| 11 Sept. | Light rain shower | 17° /11° | 4.9 mm | 4 | |
| 12 Sept. |  Partly cloudy | 17° /8° | 0 mm | 5 | |
| 13 Sept. | Sunny | 16° /5° | 0 mm | 5 | |
| 14 Sept. | Overcast | 15° /6° | 0 mm | 4 | |
| 15 Sept. |  Mist | 16° /9° | 0.2 mm | 4 | |
| 16 Sept. | Light rain shower | 18° /10° | 7 mm | 4 | |
| 17 Sept. | Sunny | 16° /9° | 0 mm | 5 | |
| 18 Sept. | Light rain shower | 17° /11° | 18.5 mm | 4 | |
| 19 Sept. | Light rain shower | 16° /10° | 4.7 mm | 4 | |
| 20 Sept. | Light rain shower | 18° /10° | 1.9 mm | 5 | |
| 21 Sept. | Light rain shower | 18° /12° | 6.7 mm | 5 | |
| 22 Sept. | Light rain shower | 18° /10° | 3.7 mm | 5 | |
| 23 Sept. | Partly cloudy | 17° /9° | 0.2 mm | 5 | |
| 24 Sept. | Patchy rain possible | 15° /9° | 4.1 mm | 4 | |
| 25 Sept. | Light rain shower | 16° /10° | 8.6 mm | 5 | |
| 26 Sept. | Patchy rain possible | 13° /8° | 2.3 mm | 4 | |
| 27 Sept. | Light rain shower | 14° /9° | 6.1 mm | 4 | |
| 28 Sept. | Light rain shower | 15° /7° | 0.7 mm | 4 | |
| 29 Sept. | Light rain shower | 14° /8° | 0.7 mm | 4 | |
| 30 Sept. | Partly cloudy | 13° /9° | 2.5 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Arendal in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Arendal forecast closer to your planned date for the most up-to-date weather information.
Change Month
Arendal in September - FAQ
What are the expected maximum and minimum temperatures in Arendal during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Arendal during September?
Moderate rainfall is anticipated in Arendal during September, with a total of 83.6 mm spread over approximately 17 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Arendal during September?
The average wind speed in Arendal during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Arendal
Explore the daily rainfall trends and prepare for Arendals September weather 💧
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