Weather in Norway for September 2025
In general, the average temperature in Norway at the beginning of September is 18.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.9 °C by the end of September.
Norway experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 93 mm.
Is September a good time to visit Norway? check out the best time to travel to Norway page.
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Norway in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2 17° | 3  14° | 4  17° | 5  20° | 6 20° | 7  21° |
| 8 20° | 9 18° | 10 17° | 11 16° | 12  15° | 13 14° | 14 14° |
| 15 14° | 16 13° | 17 13° | 18 14° | 19 13° | 20 14° | 21  15° |
| 22 15° | 23 14° | 24 11° | 25 13° | 26 12° | 27 12° | 28 12° |
| 29 11° | 30 12° |
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Temperatures trend during September in Norway
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Sunny | 20° /8° | 0 mm | 6 | |
| 2 Sept. | Sunny | 17° /9° | 3 mm | 4 | |
| 3 Sept. | Patchy rain possible | 14° /9° | 2.4 mm | 4 | |
| 4 Sept. | Overcast | 17° /9° | 2.1 mm | 4 | |
| 5 Sept. | Cloudy | 20° /9° | 0.1 mm | 5 | |
| 6 Sept. | Sunny | 20° /9° | 0 mm | 5 | |
| 7 Sept. | Partly cloudy | 21° /9° | 0.2 mm | 6 | |
| 8 Sept. | Patchy rain possible | 20° /10° | 0.1 mm | 5 | |
| 9 Sept. | Overcast | 18° /10° | 5.2 mm | 5 | |
| 10 Sept. | Overcast | 17° /9° | 1.4 mm | 4 | |
| 11 Sept. | Patchy rain possible | 16° /8° | 1.3 mm | 4 | |
| 12 Sept. | Moderate or heavy rain shower | 15° /8° | 6.5 mm | 4 | |
| 13 Sept. | Overcast | 14° /6° | 6.6 mm | 4 | |
| 14 Sept. | Cloudy | 14° /5° | 0.5 mm | 3 | |
| 15 Sept. | Patchy rain possible | 14° /5° | 0.2 mm | 4 | |
| 16 Sept. | Patchy rain possible | 13° /7° | 5.7 mm | 3 | |
| 17 Sept. | Overcast | 13° /5° | 0.2 mm | 3 | |
| 18 Sept. | Cloudy | 14° /6° | 5.4 mm | 4 | |
| 19 Sept. | Overcast | 13° /6° | 2.3 mm | 4 | |
| 20 Sept. | Patchy rain possible | 14° /4° | 0.2 mm | 3 | |
| 21 Sept. | Heavy rain at times | 15° /7° | 2.4 mm | 4 | |
| 22 Sept. | Sunny | 15° /7° | 9.3 mm | 4 | |
| 23 Sept. | Moderate rain at times | 14° /7° | 3.3 mm | 3 | |
| 24 Sept. | Patchy rain possible | 11° /6° | 1.9 mm | 3 | |
| 25 Sept. | Light rain shower | 13° /6° | 4.6 mm | 4 | |
| 26 Sept. | Partly cloudy | 12° /6° | 4 mm | 3 | |
| 27 Sept. | Moderate or heavy rain shower | 12° /7° | 11.1 mm | 3 | |
| 28 Sept. | Heavy rain at times | 12° /6° | 5 mm | 3 | |
| 29 Sept. | Patchy rain possible | 11° /4° | 1.9 mm | 3 | |
| 30 Sept. | Patchy rain possible | 12° /4° | 6.2 mm | 3 | |
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Guide for Norway in September
In September, Norway experiences a transition from late summer to early autumn, bringing about noticeable changes in the weather. At the beginning of the month, southern parts of Norway, including Oslo, typically enjoy mild temperatures with occasional rainfall.
The average temperature in Oslo at the start of September is around 14°, making it a pleasant time to explore the city and its surrounding natural beauty.
However, as the month progresses, temperatures begin to drop gradually, and by the end of September, the average temperature in Oslo decreases to around 10°. The weather becomes cooler, and there is an increased chance of rain, particularly towards the latter part of the month.
In northern Norway, cities like Tromsø experience a more significant drop in temperatures throughout September. At the beginning of the month, the average temperature in Tromsø hovers around 10°, but by the end of September, it decreases to approximately 6°.
Additionally, as September progresses, the days become noticeably shorter, with fewer hours of daylight, marking the approach of the autumn equinox.
Overall, September in Norway showcases the transition from the lingering warmth of summer to the cooler and darker days of early autumn, making it a unique time to experience the changing seasons in this beautiful Scandinavian country.
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Norway in September - FAQ
What to pack to Norway in September?
As you prepare for your trip to Norway in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Norway, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Norway
UV exposure in Norway during September
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