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Hennef Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Hennef.
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Climate overview of Hennef
Temperatures in Hennef, North Rhine-Westphalia, Germany, vary greatly throughout the year. July is the hottest month at 25°C (77°F), while January is the coldest at 6°C (43°F).
Rain/snowfall is high, totalling around 1001 mm (39 in) per year. December is the wettest month and April the driest. The city also experiences warm summers and cold winters. Sunshine peaks in July, when the city sees around 7.0 hours of sunshine per day.
Hennef Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Hennef - and find the best time to visit.
Monthly Temperature in Hennef
The climate in Hennef is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 25°C (77°F) in July, the warmest time of the year, to a chilly 6°C (43°F) during cooler months like January.
At night, you can expect temperatures ranging from 14°C (57°F) in July to around 0°C (32°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Hennef
Hennef has a notably wet climate with abundant precipitation, recording 1001 mm (39 in) of rain/snowfall per year. While rainfall varies throughout the year, each season offers its own charm. December brings wetter days averaging 104 mm (4.1 in) of precipitation, spread over 17 rainy days.
In contrast, the driest month April experiences a drier climate, with about 62 mm (2.4 in) of rainfall spread across 16 rainy days. For more details, please visit our Hennef 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 Hennef
Seasonal changes in sunshine hours are quite dramatic in Hennef. While July receives considerable daily sunshine with up to 7.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.4 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Bonn, Germany (14 KM, 8 Miles).
Daily hours of sunshine
Data from: Bonn, Germany (14 KM, 8 Miles).
Best Time to Visit Hennef
For comfortable weather, consider visiting Hennef in June, July, August and September. Conditions are usually least favourable 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
very good
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
good
Nov
cold
Dec
wet
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Hennef
What is the best time to visit Hennef?
June, July, August and September typically offer the most optimal weather in Hennef. In contrast, January, February, November and December tend to have less optimal conditions. Hennef has warm summers and cold winters.
What temperatures can I expect in Hennef?
Daytime highs range from 6°C (43°F) in January to 25°C (77°F) in July. Nighttime lows range from 0°C (32°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Hennef get?
Annual rainfall is around 1001 mm (39 in). December is the wettest month with 104 mm (4.1 in), while April is the driest with 62 mm (2.4 in).
How sunny is Hennef?
Hennef receives around 1,540 hours of sunshine per year. July is the sunniest month with 210 hours, while December is the cloudiest with just 41 hours.
Hennef 3-Day Forecast
Hennef on the map
Hennef is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
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