Viken (Drammen)
September
Weather in Viken for September 2025
Your guide to Viken weather in September - trends and predictions
In general, the average temperature in Viken at the beginning of September is 20.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14 °C by the end of September.
The climate of Viken in September is notably wet, with an average of 14 rainy days, and a total of 93 mm of precipitation.
Temperatures
Rain 🌧️
16
Dry days
14
Rainy days
0
Snow days
17°/7°
Temperatures
10 km/h
Avg max wind
81 %
Avg humidity
Viken in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  22° | 2 18° | 3  16° | 4  21° | 5 25° | 6  21° | 7  23° |
| 8 22° | 9 20° | 10 21° | 11  17° | 12 17° | 13 16° | 14 15° |
| 15 17° | 16  13° | 17 17° | 18 16° | 19 18° | 20 18° | 21 18° |
| 22 17° | 23 18° | 24 13° | 25  15° | 26 13° | 27 14° | 28 14° |
| 29 14° | 30 15° |
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Temperatures trend during September in Viken
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 22° /8° | 0 mm | 6 | |
| 2 Sept. | Partly cloudy | 18° /9° | 3.8 mm | 5 | |
| 3 Sept. | Overcast | 16° /9° | 3.2 mm | 4 | |
| 4 Sept. | Sunny | 21° /10° | 1 mm | 5 | |
| 5 Sept. | Sunny | 25° /11° | 0 mm | 7 | |
| 6 Sept. | Cloudy | 21° /11° | 0 mm | 5 | |
| 7 Sept. | Fog | 23° /9° | 0.3 mm | 5 | |
| 8 Sept. | Fog | 22° /11° | 0 mm | 5 | |
| 9 Sept. | Fog | 20° /11° | 7.5 mm | 5 | |
| 10 Sept. | Mist | 21° /8° | 2.4 mm | 5 | |
| 11 Sept. | Light rain shower | 17° /8° | 1 mm | 4 | |
| 12 Sept. | Overcast | 17° /6° | 0.8 mm | 4 | |
| 13 Sept. | Partly cloudy | 16° /2° | 0 mm | 4 | |
| 14 Sept. | Overcast | 15° /2° | 0 mm | 4 | |
| 15 Sept. | Fog | 17° /4° | 0 mm | 4 | |
| 16 Sept. | Moderate rain | 13° /7° | 14.7 mm | 3 | |
| 17 Sept. | Mist | 17° /5° | 0 mm | 4 | |
| 18 Sept. | Moderate rain | 16° /7° | 14.2 mm | 4 | |
| 19 Sept. | Light rain shower | 18° /6° | 8.4 mm | 5 | |
| 20 Sept. | Patchy rain possible | 18° /6° | 0.4 mm | 4 | |
| 21 Sept. | Light rain shower | 18° /11° | 4.4 mm | 5 | |
| 22 Sept. | Light rain shower | 17° /7° | 17 mm | 4 | |
| 23 Sept. | Patchy rain possible | 18° /5° | 0.6 mm | 4 | |
| 24 Sept. | Sunny | 13° /5° | 2.8 mm | 4 | |
| 25 Sept. | Light rain | 15° /8° | 7.6 mm | 4 | |
| 26 Sept. | Fog | 13° /5° | 0.1 mm | 3 | |
| 27 Sept. | Light rain shower | 14° /5° | 2.3 mm | 4 | |
| 28 Sept. | Light drizzle | 14° /4° | 0.4 mm | 4 | |
| 29 Sept. | Patchy rain possible | 14° /3° | 0 mm | 4 | |
| 30 Sept. | Partly cloudy | 15° /3° | 0.2 mm | 4 | |
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Important Notice
Our weather forecast for Viken 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 Viken forecast closer to your planned date for the most up-to-date weather information.
Viken in September - FAQ
What are the expected maximum and minimum temperatures in Viken during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Viken during September?
Moderate rainfall is anticipated in Viken during September, with a total of 93 mm spread over approximately 14 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Viken during September?
The average wind speed in Viken during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Viken
Explore the daily rainfall trends and prepare for Vikens September weather 💧
UV exposure in Viken during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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