Heilbronn Weather in September

With daytime temperatures of 21°C (70°F) and nighttime lows of 11°C (52°F), September in Heilbronn brings pleasant temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 70 mm (2.8 in) falls on average.

Rainfall in Heilbronn in September

This month experiences about 12 days of rain according to historical data, averaging 70 mm (2.8 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Heilbronn in September

If you're visiting Heilbronn in September, expect perfect temperatures with highs of 21°C (70°F) and overnight lows of 11°C (52°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Heilbronn in September

The area enjoys a moderate level of sunlight, with around 171 hours. It's a good balance between sunny and cloudy days.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August and September typically offer the best circumstances for Heilbronn.

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For a detailed overview over the year and the best time to visit Germany, check out our Heilbronn's climate page.

Heilbronn Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 38%  

Precipitation 70 mm (2.8 in)  

Rainy days 12 days  

Sunshine 171 hours *  

Percentage Sunshine 45% *  

* Data from: Stuttgart, Germany (40 KM, 25 Miles).

What to Wear in Heilbronn in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Heilbronn in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Germany, check out our Heilbronn's climate page.

More climate data for Heilbronn

Temperature Rainfall Sunshine

See the full Heilbronn climate overview or explore weather in Germany.