Bonn Weather in December
December in Bonn averages 7°C (45°F) during the day and 2°C (36°F) at night. It is the wettest month of the year, with 88 mm (3.5 in) of rainfall on average, so waterproof gear is a must.
Rainfall in Bonn in December
With the most rainfall occurring this month, it's practical to keep an umbrella handy for sudden downpours. Past climate data indicates that roughly 17 days will see rain, totalling around 88 mm (3.5 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Bonn in December
Daytime highs in Bonn in December reach 7°C (45°F), with nights around 2°C (36°F). During December, the winter season is in full swing. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. Nights fall to 2°C (36°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Bonn in December
This month is characterized by fewer sunny days, with about 41 hours of sunshine. It's great for those who appreciate cooler, less sunny days.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Bonn.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Germany, check out our Bonn's climate page.
Bonn Temperature in December
Min Temperature
2°C (36°F)
Max Temperature
7°C (45°F)
Chance of Rain
58%
Precipitation
88 mm (3.5 in)
Rainy days
17 days
Sunshine
41 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bonn typically stay consistent throughout December, with daily highs averaging around 7°C (45°F). Nights are cold, with lows around 1°C (34°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Bonn in December
Browse day-by-day weather records for Bonn spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bonn historical weather extremes in December
Based on 49 years of weather observations in Bonn between 1976 and 2025, these are the recorded extremes.
- On December 31, 2022, temperatures climbed to 17°C (63°F), marking the warmest December day on record.
- The coldest December day was on December 19, 2009, with a maximum of -7°C (19°F).
- Nighttime temperatures dropped to -16°C (3°F) on December 29, 1996, marking the coldest December night on record.
Best Places in Germany in December
Find out more about the weather in Germany and which places have the best travel conditions in this month. See all of Germany in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Bonn in December
We recommend to layer up for chilly conditions in Bonn in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Bonn in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Germany, check out our Bonn's climate page.
See the full Bonn climate overview or explore weather in Germany.
