Weather in København for September 2025
In general, the average temperature in København at the beginning of September is 22.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.7 °C by the end of September.
København sees moderate rainfall in September, averaging 6 rainy days.
Is September a good time to visit København? check out the best time to travel to København page.
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København in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2  20° | 3  21° | 4 24° | 5 25° | 6  24° | 7 23° |
| 8 25° | 9 23° | 10 20° | 11 20° | 12 18° | 13  15° | 14 17° |
| 15 18° | 16 19° | 17 21° | 18 22° | 19 20° | 20  21° | 21 21° |
| 22 19° | 23 18° | 24 17° | 25 17° | 26 17° | 27 18° | 28 18° |
| 29 15° | 30 15° |
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Temperatures trend during September in København
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Patchy rain possible | 20° /13° | 0.8 mm | 5 | |
| 2 Sept. | Sunny | 20° /13° | 0 mm | 6 | |
| 3 Sept. | Overcast | 21° /15° | 0 mm | 5 | |
| 4 Sept. | Sunny | 24° /16° | 0.4 mm | 6 | |
| 5 Sept. | Sunny | 25° /16° | 0 mm | 7 | |
| 6 Sept. | Partly cloudy | 24° /16° | 0 mm | 7 | |
| 7 Sept. | Sunny | 23° /16° | 0 mm | 6 | |
| 8 Sept. | Sunny | 25° /17° | 0.5 mm | 6 | |
| 9 Sept. | Overcast | 23° /16° | 5 mm | 5 | |
| 10 Sept. | Sunny | 20° /14° | 3.3 mm | 5 | |
| 11 Sept. | Sunny | 20° /13° | 10.2 mm | 5 | |
| 12 Sept. | Overcast | 18° /12° | 1.6 mm | 5 | |
| 13 Sept. | Cloudy | 15° /11° | 0.1 mm | 4 | |
| 14 Sept. | Overcast | 17° /11° | 0 mm | 5 | |
| 15 Sept. | Partly cloudy | 18° /11° | 0 mm | 5 | |
| 16 Sept. | Sunny | 19° /14° | 0.3 mm | 5 | |
| 17 Sept. | Partly cloudy | 21° /14° | 0 mm | 6 | |
| 18 Sept. | Cloudy | 22° /15° | 0 mm | 6 | |
| 19 Sept. | Light rain shower | 20° /14° | 0.6 mm | 5 | |
| 20 Sept. | Light rain | 21° /15° | 1.2 mm | 5 | |
| 21 Sept. | Sunny | 21° /15° | 0 mm | 6 | |
| 22 Sept. | Light rain | 19° /14° | 1.1 mm | 5 | |
| 23 Sept. | Light rain shower | 18° /13° | 2.3 mm | 5 | |
| 24 Sept. | Patchy rain possible | 17° /12° | 2.4 mm | 4 | |
| 25 Sept. | Overcast | 17° /13° | 1.7 mm | 4 | |
| 26 Sept. | Overcast | 17° /12° | 4.9 mm | 4 | |
| 27 Sept. | Partly cloudy | 18° /13° | 4.6 mm | 5 | |
| 28 Sept. | Cloudy | 18° /12° | 0.4 mm | 4 | |
| 29 Sept. | Light rain | 15° /12° | 1.7 mm | 4 | |
| 30 Sept. | Patchy rain possible | 15° /11° | 0.2 mm | 4 | |
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Guide for København in September
In September, Copenhagen, Denmark experiences a transition from the late summer to early autumn, with gradually decreasing temperatures and increasing chances of rainfall.
At the beginning of the month, the weather in Copenhagen is generally mild, with average temperatures around 16° and occasional sunny days. However, as the month progresses, the temperatures begin to drop, and by the end of September, the average temperature hovers around 12°.
Additionally, the likelihood of rain showers increases towards the end of the month, so visitors should be prepared for some wet weather.
Copenhagen in September can be quite unpredictable, with the potential for both warm, pleasant days and cooler, damp conditions. It's advisable for travelers to pack layers and waterproof clothing to accommodate the changing weather.
Despite the variability, September can still be a lovely time to visit Copenhagen, as the city is less crowded than in the peak summer months, and the changing colors of the foliage add a beautiful backdrop to the city's charming streets and canals.
København in September - FAQ
What to pack to København in September?
As you prepare for your trip to København 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 København, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- 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 København
UV exposure in København during September
Quick links
Where is København?Get accurate weather forecasts for København, located at latitude 55.676 and longitude 12.566. Stay updated with localized weather information tailored for København.