Weather in Heidelberg for September 2027
In general, the average temperature in Heidelberg at the beginning of September is 26.2 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.4 °C by the end of September.
Heidelberg experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 68.3 mm.
Is September a good time to visit Heidelberg? check out the best time to travel to Heidelberg page.
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Heidelberg Weather September
Temperatures trend during September in Heidelberg
September weather in Heidelberg day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 25° /16° | 3.2 mm | 5 | |
| 2 Sept. |  Partly cloudy | 26° /16° | 0.8 mm | 5 | |
| 3 Sept. | Partly cloudy | 27° /17° | 0.6 mm | 6 | |
| 4 Sept. | Light rain | 26° /17° | 4.4 mm | 5.9 | |
| 5 Sept. | Light rain | 26° /16° | 3.3 mm | 5.8 | |
| 6 Sept. |  Patchy rain possible | 25° /15° | 2.4 mm | 5 | |
| 7 Sept. |  Sunny | 29° /16° | 0.1 mm | 5.6 | |
| 8 Sept. | Sunny | 27° /17° | 0.9 mm | 5.5 | |
| 9 Sept. |  Moderate rain | 22° /16° | 10.1 mm | 4 | |
| 10 Sept. | Patchy rain possible | 23° /15° | 0.5 mm | 5.4 | |
| 11 Sept. | Patchy rain possible | 23° /14° | 1.9 mm | 5 | |
| 12 Sept. | Patchy rain possible | 23° /13° | 1.3 mm | 5 | |
| 13 Sept. | Patchy rain possible | 21° /14° | 1 mm | 4 | |
| 14 Sept. | Patchy rain possible | 21° /14° | 2 mm | 4 | |
| 15 Sept. |  Overcast | 24° /14° | 0.5 mm | 4.9 | |
| 16 Sept. | Patchy rain possible | 21° /14° | 0.5 mm | 4 | |
| 17 Sept. | Overcast | 23° /13° | 0.4 mm | 4.7 | |
| 18 Sept. | Light rain shower | 24° /14° | 1 mm | 4.6 | |
| 19 Sept. | Patchy rain possible | 24° /14° | 0.1 mm | 4 | |
| 20 Sept. | Sunny | 26° /14° | 0.1 mm | 4.5 | |
| 21 Sept. | Light rain | 23° /13° | 6.3 mm | 4.4 | |
| 22 Sept. | Light rain | 19° /12° | 3.5 mm | 4 | |
| 23 Sept. | Patchy rain possible | 20° /11° | 1.9 mm | 4 | |
| 24 Sept. | Moderate rain | 18° /12° | 10.9 mm | 4 | |
| 25 Sept. | Patchy rain possible | 19° /10° | 1.9 mm | 4 | |
| 26 Sept. | Light rain | 19° /11° | 6.8 mm | 3.9 | |
| 27 Sept. | Overcast | 22° /12° | 0.2 mm | 3.9 | |
| 28 Sept. | Patchy rain possible | 23° /12° | 1.1 mm | 3.8 | |
| 29 Sept. | Overcast | 22° /13° | 0 mm | 3.7 | |
| 30 Sept. | Partly cloudy | 21° /12° | 0.8 mm | 3.6 | |
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Heidelberg weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 27°/17° | 23°/14° | 16°/10° |
| Rainfall | 78 mm | 68 mm | 68 mm |
| Wind | 13.8 km/h | 14 km/h | 14.3 km/h |
| Humidity | 58% | 62% | 72% |
| Rainy days | 12 days | 9 days | 12 days |
| Dry days | 19 days | 21 days | 19 days |
Planning a trip to Heidelberg? Discover the best time to visit
Heidelberg in September - FAQ
What are the expected maximum and minimum temperatures in Heidelberg during September?
How much rainfall should be expected in Heidelberg during September?
What are the typical wind conditions in Heidelberg during September?
September rainfall patterns in Heidelberg
UV exposure in Heidelberg during September
What to pack to Heidelberg in September?
Mild & changeable · highs around 23 °C, frequent showers
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
👟 Footwear
🎒 Accessories
Where is Heidelberg?Get accurate weather forecasts for Heidelberg, located at latitude 49.408 and longitude 8.691. Stay updated with localized weather information tailored for Heidelberg.