Arendal
September
Weather in Arendal for September 2025
Your guide to Arendal weather in September - trends and predictions
In general, the average temperature in Arendal at the beginning of September is 19.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.3 °C by the end of September.
Arendal experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 167.1 mm.
Temperatures
Rain 🌧️
24
Dry days
6
Rainy days
0
Snow days
18°/9°
Temperatures
20 km/h
Avg max wind
78 %
Avg humidity
Arendal Weather September
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Temperatures trend during September in Arendal
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September weather in Arendal day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 19° /11° | 0 mm | 5 | |
| 2 Sept. |  Sunny | 18° /11° | 0 mm | 5 | |
| 3 Sept. | Overcast | 16° /13° | 4.6 mm | 4 | |
| 4 Sept. | Sunny | 21° /15° | 1.3 mm | 5 | |
| 5 Sept. | Sunny | 23° /14° | 0 mm | 6 | |
| 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 | |
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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 18° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Arendal during September?
Significant rainfall exceeding 167.1 mm is expected in Arendal during September, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
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 💧
UV exposure in Arendal during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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