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Weather in Heidelberg for September 2026

Your guide to Heidelberg weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Heidelberg during September is quite rare, with fewer than 2 snowy days on average.
    According to Heidelberg snow forecast for September 2026, 1 snowy day is expected in the next 2 weeks at Sunday, 20 September.

    • Temperatures

  • Until now, September 2026 in Heidelberg is cooler than usual, with temperatures averaging 21.2 °C, this is 2.9 °C below the typical seasonal average.

  • Expect cooler weather in the next days in Heidelberg with the forecast suggesting a temperature of 21 °C, lower than the historical average.

  • In general, the average temperature in Heidelberg at the beginning of September is 24.3 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 24 °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
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
25°
2
Sunny
25°
3
Sunny
26°
4
Sunny
25°
5
Sunny
24°
6
Sunny
23°
7
Sunny
22°
8
Sunny
24°
9
Patchy rain possible
24°
10
Partly cloudy
23°
11
Partly cloudy
25°
12
Sunny
24°
13
Sunny
25°
14
Sunny
25°
15
Sunny
20°
16
Sunny
24°
17
Sunny
26°
18
Sunny
26°
19
Overcast
22°
20
Overcast
8°
21
Sunny
13°
22
Sunny
17°
23
Sunny
23°
24
Overcast
24°
25
Sunny
17°
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 Snow More
1 Sept. Sunny
Sunny
 25° /11° 0 mm 0 cm
2 Sept. Sunny
Sunny
 25° /12° 0 mm 0 cm
3 Sept. Sunny
Sunny
 26° /12° 0 mm 0 cm
4 Sept. Sunny
Sunny
 25° /12° 6.5 mm 0 cm
5 Sept. Sunny
Sunny
 24° /11° 0.8 mm 0 cm
6 Sept. Sunny
Sunny
 23° /12° 4.1 mm 0 cm
7 Sept. Sunny
Sunny
 22° /11° 3.4 mm 0 cm
8 Sept. Sunny
Sunny
 24° /12° 0.1 mm 0 cm
9 Sept. Patchy rain possible
Patchy rain possible
 24° /11° 0.3 mm 0 cm
10 Sept. Partly cloudy
Partly cloudy
 23° /10° 0 mm 0 cm
11 Sept. Partly cloudy
Partly cloudy
 25° /12° 0 mm 0 cm
12 Sept. Sunny
Sunny
 24° /12° 0 mm 0 cm
13 Sept. Sunny
Sunny
 25° /12° 0 mm 0 cm
14 Sept. Sunny
Sunny
 25° /13° 0.8 mm 0 cm
15 Sept. Sunny
Sunny
 20° /10° 21.8 mm 0 cm
16 Sept. Sunny
Sunny
 24° /10° 0 mm 0 cm
17 Sept. Sunny
Sunny
 26° /14° 0.4 mm 0 cm
18 Sept. Sunny
Sunny
 26° /15° 0.4 mm 0 cm
19 Sept. Overcast
Overcast
 22° /8° 0 mm 0 cm
20 Sept. Overcast
Overcast
 8° /2° 36.6 mm 17.6 cm
21 Sept. Sunny
Sunny
 13° /4° 0 mm 0 cm
22 Sept. Sunny
Sunny
 17° /5° 0 mm 0 cm
23 Sept. Sunny
Sunny
 23° /10° 0 mm 0 cm
24 Sept. Overcast
Overcast
 24° /14° 0 mm 0 cm
25 Sept. Sunny
Sunny
 17° /8° 0 mm 0 cm
26 Sept. Partly cloudy
Partly cloudy
 27° /13° 0 mm 0 cm
27 Sept. Sunny
Sunny
 27° /14° 0 mm 0 cm
28 Sept. Patchy rain possible
Patchy rain possible
 28° /14° 1.7 mm 0 cm
29 Sept. Partly cloudy
Partly cloudy
 26° /13° 4.6 mm 0 cm
30 Sept. Sunny
Sunny
 19° /9° 0.1 mm 0 cm
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.

Heidelberg snow forecast September 2026

Track daily snowfall levels and discover Heidelberg’s snowy potential this September ❄️

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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