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Heilbronn Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Heilbronn.
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Climate overview of Heilbronn
The climate in Heilbronn, Baden-Württemberg, Germany, is marked by large temperature swings across the seasons, ranging from 26°C (79°F) in July to 5°C (41°F) in January.
With around 923 mm (36 in) of annual rain/snowfall, the city has moderate precipitation levels. December is the wettest month and April the driest. It also has warm summers and cold winters. Sunshine peaks in July, when the city sees around 7.8 hours of sunshine per day.
Heilbronn Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Heilbronn - and find the best time to visit.
Monthly Temperature in Heilbronn
In Heilbronn, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 26°C (79°F) in July to a chilly 5°C (41°F) in the coolest month, January.
Nights vary from 15°C (59°F) in July to around -1°C (30°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Heilbronn
On average, Heilbronn receives a reasonable amount of rain/snowfall, with an annual precipitation of 923 mm (36 in). Precipitation levels in Heilbronn remain relatively steady throughout the year. December has the most snow/rain, with 94 mm (3.7 in) over 15 days. In the driest month April, this drops slightly to 59 mm (2.3 in), making the city's climate fairly predictable. For more details, please visit our Heilbronn Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Heilbronn
For those who appreciate different seasons, Heilbronn serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 7.8 hours of sunshine daily, and embrace the darker days in December, offering only 2.0 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Stuttgart, Germany (40 KM, 25 Miles).
Daily hours of sunshine
Data from: Stuttgart, Germany (40 KM, 25 Miles).
Daily percentage of sunshine
Data from: Stuttgart, Germany (40 KM, 25 Miles).
Best Time to Visit Heilbronn
The most comfortable overall weather for exploring Heilbronn is usually found in May, June, July, August and September. Conditions are generally least comfortable in January, February, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
mixed
Apr
good
May
excellent
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
good
Nov
cold
Dec
cold
- Best overall: May, June, July, August and September
- Warmest weather: July and August
- Most sunshine: July and August
- Fewer rainy days: February, July, August, September and October
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -1°C (30°F).
Frequently asked questions about the climate in Heilbronn
What is the best time to visit Heilbronn?
May, June, July, August and September typically offer the most optimal weather in Heilbronn. In contrast, January, February, November and December tend to have less optimal conditions. Heilbronn has warm summers and cold winters.
What temperatures can I expect in Heilbronn?
Daytime highs range from 5°C (41°F) in January to 26°C (79°F) in July. Nighttime lows range from -1°C (30°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Heilbronn get?
Annual rainfall is around 923 mm (36 in). December is the wettest month with 94 mm (3.7 in), while April is the driest with 59 mm (2.3 in). In the coldest months, precipitation may fall as snow/rain.
How sunny is Heilbronn?
Heilbronn receives around 1,816 hours of sunshine per year. July is the sunniest month with 235 hours, while December is the cloudiest with just 61 hours.
Heilbronn 3-Day Forecast
Heilbronn on the map
Heilbronn is highlighted - select any city to see its climate.
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