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Hennef Weather and Climate: A Comprehensive Guide

Hennef experiences great temperature shifts. The city's weather can transition from warm days to cold weather. It also has a notably wet climate with much precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

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 in July, the warmest time of the year, to a chilly 6°C during cooler months like January.

At night, temperatures typically drop to an average of around 0°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Hennef has a notably wet climate with abundant precipitation, recording 1001 mm of rain/snowfall per year. While rainfall varies throughout the year, each season offers its own charm. December brings wetter days averaging 104 mm of precipitation, spread over 17 rainy days.

In contrast, April experiences a drier climate, with about 62 mm of rainfall spread across 16 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

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).

Forecast for Hennef

Tue   Dec 24
7°C | 3°C
SE 6 m/s
1.8 mm
overcast and rain

overcast and rain

Wed   Dec 25
9°C | 6°C
SE 4 m/s
1.2 mm
overcast and  chance of slight rain

overcast and chance of slight rain

Thu   Dec 26
10°C | 5°C
E 4 m/s
partly cloudy and no rain

partly cloudy and no rain

The best time of year to visit Hennef in Germany

During the months of June, July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Hennef?
    July has an average maximum temperature of 25°C and is the warmest month of the year.
  • Which is the coldest month in Hennef?
    The coldest month is January with an average maximum temperature of 6°C.
  • Which is the wettest month in Hennef?
    December tops the wettest month list with 104 mm of rainfall.
  • Which is the driest month in Hennef?
    April is the driest month with 62 mm of precipitation.
  • Which is the sunniest month in Hennef?
    July is the sunniest month with an average of 210 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.