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Weather in Heidelberg for September 2026

Your guide to Heidelberg weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Heidelberg at the beginning of September is 25.6 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 25.3 °C by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Heidelberg experiences minimal rainfall in September.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
25
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/12°
Temperatures
Average wind speed
23 km/h
Avg max wind
Average humidity
35 %
Avg humidity

Heidelberg Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
25°
2
Sunny
25°
3
Sunny
27°
4
Sunny
26°
5
Sunny
25°
6
Sunny
26°
7
Sunny
25°
8
Sunny
26°
9
Patchy rain possible
26°
10
Partly cloudy
23°
11
Partly cloudy
26°
12
Sunny
28°
13
Sunny
28°
14
Sunny
27°
15
Cloudy
28°
16
Patchy rain possible
26°
17
Patchy rain possible
26°
18
Sunny
27°
19
Sunny
28°
20
Patchy rain possible
19°
21
Light drizzle
17°
22
Overcast
22°
23
Sunny
25°
24
Patchy rain possible
24°
25
Partly cloudy
26°
26
Partly cloudy
27°
27
Sunny
27°
28
Patchy rain possible
28°
29
Partly cloudy
26°
30
Sunny
19°

Temperatures trend during September in Heidelberg

See the weather trend as well as the moving average line

September weather in Heidelberg day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 25° /10° 0 mm 8
2 Sept. Sunny
Sunny
 25° /12° 0 mm 8
3 Sept. Sunny
Sunny
 27° /12° 0 mm 8
4 Sept. Sunny
Sunny
 26° /12° 0 mm 8
5 Sept. Sunny
Sunny
 25° /12° 0 mm 8
6 Sept. Sunny
Sunny
 26° /12° 2.8 mm 8
7 Sept. Sunny
Sunny
 25° /11° 0.1 mm 7
8 Sept. Sunny
Sunny
 26° /13° 0 mm 8
9 Sept. Patchy rain possible
Patchy rain possible
 26° /12° 0.4 mm 7
10 Sept. Partly cloudy
Partly cloudy
 23° /10° 0 mm 8
11 Sept. Partly cloudy
Partly cloudy
 26° /12° 0 mm 8
12 Sept. Sunny
Sunny
 28° /15° 0 mm 8
13 Sept. Sunny
Sunny
 28° /15° 0.2 mm 8
14 Sept. Sunny
Sunny
 27° /15° 0 mm 8
15 Sept. Cloudy
Cloudy
 28° /14° 0 mm 8
16 Sept. Patchy rain possible
Patchy rain possible
 26° /14° 0.2 mm 8
17 Sept. Patchy rain possible
Patchy rain possible
 26° /11° 0.1 mm 8
18 Sept. Sunny
Sunny
 27° /12° 0 mm 8
19 Sept. Sunny
Sunny
 28° /12° 0 mm 8
20 Sept. Patchy rain possible
Patchy rain possible
 19° /9° 0.4 mm 6
21 Sept. Light drizzle
Light drizzle
 17° /9° 0.9 mm 6
22 Sept. Overcast
Overcast
 22° /9° 0 mm 7
23 Sept. Sunny
Sunny
 25° /10° 0 mm 8
24 Sept. Patchy rain possible
Patchy rain possible
 24° /11° 0.2 mm 7
25 Sept. Partly cloudy
Partly cloudy
 26° /12° 5.9 mm 7
26 Sept. Partly cloudy
Partly cloudy
 27° /13° 0 mm 8
27 Sept. Sunny
Sunny
 27° /14° 0 mm 8
28 Sept. Patchy rain possible
Patchy rain possible
 28° /14° 1.7 mm 7
29 Sept. Partly cloudy
Partly cloudy
 26° /13° 4.6 mm 7
30 Sept. Sunny
Sunny
 19° /9° 0.1 mm 7
Next
Important Notice
Our weather forecast for Heidelberg in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Heidelberg forecast closer to your planned date for the most up-to-date weather information.
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Heidelberg in September - FAQ

What are the expected maximum and minimum temperatures in Heidelberg during September?

Enjoy moderate daytime temperatures of up to 25° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Heidelberg during September?

Expect minimal rainfall in Heidelberg during September, with a total of 17.6 mm over approximately 5 days. This minimal precipitation is unlikely to significantly impact plans.

What are the typical wind conditions in Heidelberg during September?

The average wind speed in Heidelberg during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Heidelberg

Explore the daily rainfall trends and prepare for Heidelbergs September weather 💧
Typically, Heidelberg has 5 rainy days in September with a total of 17.6 mm of rainfall.

UV exposure in Heidelberg during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Heidelberg?

Get accurate weather forecasts for Heidelberg, located at latitude -26.505 and longitude 28.359. Stay updated with localized weather information tailored for Heidelberg.

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