Weather in Heidelberg for September 2025
In general, the average temperature in Heidelberg at the beginning of September is 27.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.9 °C by the end of September.
Heidelberg sees moderate rainfall in September, averaging 7 rainy days.
Is September a good time to visit Heidelberg? check out the best time to travel to Heidelberg page.
- New! Chat with our AI weatherman - it’s amazing and free.
Heidelberg in September average weather
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 27° | 2 28° | 3 28° | 4 26° | 5 28° | 6 26° | 7 29° |
8 27° | 9 25° | 10 26° | 11 24° | 12 23° | 13 19° | 14 20° |
15 23° | 16 21° | 17 25° | 18 25° | 19 23° | 20 25° | 21 26° |
22 22° | 23 20° | 24 21° | 25 21° | 26 21° | 27 22° | 28 21° |
29 21° | 30 19° |
You can click on date
Temperatures trend during September in Heidelberg
September weather day by day
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 Sept. | Light rain shower | 27° /16° | 6.3 mm | 6 | |
2 Sept. | Partly cloudy | 28° /17° | 1 mm | 7 | |
3 Sept. | Partly cloudy | 28° /18° | 0.8 mm | 8 | |
4 Sept. | Sunny | 26° /17° | 1.2 mm | 6 | |
5 Sept. | Sunny | 28° /17° | 2.4 mm | 7 | |
6 Sept. | Sunny | 26° /15° | 4.7 mm | 6 | |
7 Sept. | Sunny | 29° /16° | 0 mm | 7 | |
8 Sept. | Sunny | 27° /16° | 0.9 mm | 7 | |
9 Sept. | Sunny | 25° /16° | 5.4 mm | 6 | |
10 Sept. | Sunny | 26° /16° | 0.9 mm | 7 | |
11 Sept. | Cloudy | 24° /14° | 3.1 mm | 6 | |
12 Sept. | Thundery outbreaks possible | 23° /12° | 2 mm | 6 | |
13 Sept. | Overcast | 19° /12° | 0.2 mm | 5 | |
14 Sept. | Cloudy | 20° /13° | 0 mm | 5 | |
15 Sept. | Partly cloudy | 23° /11° | 0 mm | 6 | |
16 Sept. | Patchy rain possible | 21° /13° | 0.2 mm | 5 | |
17 Sept. | Sunny | 25° /14° | 0.7 mm | 6 | |
18 Sept. | Light rain shower | 25° /15° | 1.6 mm | 6 | |
19 Sept. | Patchy rain possible | 23° /15° | 0.2 mm | 5 | |
20 Sept. | Partly cloudy | 25° /13° | 0 mm | 7 | |
21 Sept. | Patchy rain possible | 26° /14° | 2.4 mm | 6 | |
22 Sept. | Light rain shower | 22° /13° | 1.8 mm | 5 | |
23 Sept. | Patchy rain possible | 20° /11° | 3.8 mm | 5 | |
24 Sept. | Sunny | 21° /12° | 0.3 mm | 6 | |
25 Sept. | Sunny | 21° /11° | 0.3 mm | 6 | |
26 Sept. | Sunny | 21° /13° | 11.2 mm | 5 | |
27 Sept. | Overcast | 22° /12° | 0.2 mm | 5 | |
28 Sept. | Partly cloudy | 21° /12° | 2.1 mm | 6 | |
29 Sept. | Overcast | 21° /12° | 0 mm | 6 | |
30 Sept. | Partly cloudy | 19° /11° | 1.1 mm | 5 | |
Next |
Heidelberg in September - FAQ
What to pack to Heidelberg in September?
As you prepare for your trip to Heidelberg 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 Heidelberg, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- 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
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
Quick links
Get accurate weather forecasts for Heidelberg, located at latitude 49.408 and longitude 8.691. Stay updated with localized weather information tailored for Heidelberg.