Weather in Zürich for September 2025
In general, the average temperature in Zürich at the beginning of September is 25.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19 °C by the end of September.
Zürich sees moderate rainfall in September, averaging 6 rainy days.
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Zürich in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  27° | 2  26° | 3 27° | 4  24° | 5 24° | 6 25° | 7 28° |
| 8 27° | 9 23° | 10 24° | 11 23° | 12  21° | 13 15° | 14 15° |
| 15 20° | 16 20° | 17 20° | 18  20° | 19 18° | 20 23° | 21 23° |
| 22 19° | 23 17° | 24 19° | 25 19° | 26 18° | 27 20° | 28  17° |
| 29 20° | 30 20° |
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Temperatures trend during September in Zürich
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 27° /13° | 0.8 mm | 7 | |
| 2 Sept. | Sunny | 26° /13° | 0.5 mm | 7 | |
| 3 Sept. | Sunny | 27° /14° | 4.2 mm | 7 | |
| 4 Sept. | Mist | 24° /13° | 3.7 mm | 6 | |
| 5 Sept. | Sunny | 24° /12° | 0.8 mm | 6 | |
| 6 Sept. | Mist | 25° /11° | 0 mm | 6 | |
| 7 Sept. | Mist | 28° /12° | 0 mm | 6 | |
| 8 Sept. | Fog | 27° /14° | 4.2 mm | 6 | |
| 9 Sept. | Sunny | 23° /13° | 6.7 mm | 6 | |
| 10 Sept. | Sunny | 24° /12° | 0.2 mm | 6 | |
| 11 Sept. | Partly cloudy | 23° /11° | 7 mm | 6 | |
| 12 Sept. | Thundery outbreaks possible | 21° /10° | 1.8 mm | 5 | |
| 13 Sept. | Mist | 15° /9° | 5.4 mm | 4 | |
| 14 Sept. | Fog | 15° /9° | 1.7 mm | 4 | |
| 15 Sept. | Fog | 20° /6° | 0 mm | 5 | |
| 16 Sept. | Mist | 20° /7° | 0.9 mm | 5 | |
| 17 Sept. | Mist | 20° /10° | 1.4 mm | 5 | |
| 18 Sept. | Light rain shower | 20° /9° | 5.6 mm | 5 | |
| 19 Sept. | Patchy rain possible | 18° /10° | 0.6 mm | 5 | |
| 20 Sept. | Partly cloudy | 23° /8° | 0 mm | 6 | |
| 21 Sept. | Partly cloudy | 23° /11° | 0.9 mm | 6 | |
| 22 Sept. | Light rain shower | 19° /9° | 10.2 mm | 5 | |
| 23 Sept. | Patchy rain possible | 17° /10° | 3.7 mm | 4 | |
| 24 Sept. | Sunny | 19° /7° | 0.2 mm | 5 | |
| 25 Sept. | Mist | 19° /5° | 0.1 mm | 5 | |
| 26 Sept. | Sunny | 18° /8° | 18.4 mm | 5 | |
| 27 Sept. | Sunny | 20° /8° | 1.3 mm | 5 | |
| 28 Sept. | Overcast | 17° /8° | 3.9 mm | 4 | |
| 29 Sept. | Partly cloudy | 20° /7° | 0 mm | 5 | |
| 30 Sept. | Mist | 20° /8° | 0.7 mm | 5 | |
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Guide for Zürich in September
In September, Zürich, Switzerland experiences a transition from the lingering warmth of summer to the crispness of early autumn. At the beginning of the month, Zürich typically enjoys mild and pleasant weather with average temperatures around 18° during the day and 10° at night.
The city experiences a mix of sunny days and occasional light showers, making it an ideal time to explore the picturesque streets and scenic lakeside promenades.
As the month progresses, the weather in Zürich gradually cools down, with average daytime temperatures dropping to around 16° and nighttime temperatures decreasing to 8°. Visitors can expect a higher chance of rainfall towards the end of September, as the city transitions into the autumn season.
The changing foliage in the surrounding countryside adds a beautiful backdrop to the city, making it a great time for nature walks and outdoor activities.
Overall, September in Zürich offers a delightful blend of late summer warmth and early autumnal charm, providing visitors with the opportunity to experience the city's cultural attractions and natural beauty in comfortable weather conditions.
Zürich in September - FAQ
What to pack to Zürich in September?
As you prepare for your trip to Zürich 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 Zürich, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- 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 Zürich
UV exposure in Zürich during September
Quick links
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