Heidelberg in december: average Weather, Temperature and Climate
Weather in Heidelberg in december 2026
The weather in Heidelberg in the month of december comes from statistical datas on the last years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather 131.8cm
Weather at 6am
38°F
Clear/Sunny
21% of time
21%
17%
14%
Weather at 12pm
43°F
Cloudy
24% of time
22%
20%
15%
Weather at 6pm
40°F
Clear/Sunny
22% of time
20%
19%
14%
Weather at 3am
38°F
20%
19%
19%
12%
Evolution of daily average temperature and precipitation in Heidelberg in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Heidelberg in december.
The climate of Heidelberg in december is very bad
the weather in Heidelberg in december is wet (with 3.7in of rainfall over 7 days). The situation is deteriorating compared to the previous month since in november there is an average of 2.7in of precipitation over 4 days.
The climate is quite cold in that area december. Do not forget to take with you warm clothes! The high seasonal norm is 43°F. In the morning the temperature drops to 38°F. Thus, the mean temperature average on this month of december in Heidelberg is 41°F. Note that these seasonal averages are in contrast with those observed in Heidelberg in the month of december with a maximum record of 59°F in 2021 and a minimum record of 2°F in 2010. You need to prepare to have about 9 days with temperatures below 32°F, or 29% of the month.
In december in Heidelberg, the days on average last 08:12. Sunrise is at 08:14 and sets at 16:26.
Seasonal average climate and temperature of Heidelberg in december
Check below seasonal norms These datas are set from the weather statements of the last years of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 41°F | ||||
| Highest temperature | 43°F | ||||
| Lowest temperature | 38°F | ||||
| Highest record temperature | 59°F (2021) | ||||
| Lowest record temperature | 2°F (2010) | ||||
| Number of days at +65°F | 0 day(s) (0%) | ||||
| Number of days at -32°F | 9 day(s) (29%) | ||||
| Wind | |||||
| Wind speed | 15km/h | ||||
| Wind temperature | 32°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.7in | ||||
| Number of days with rainfall | 7 day(s) (21%) | ||||
| Record daily rainfall | 1.2in (2017) | ||||
| Snowfall | 131.8cm | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 7.99km | ||||
| Cloud cover | 59% | ||||
| UV index | 2 | ||||
| Daily sunshine hours | 6 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 08:14 | ||||
| Time of sunset | 16:26 | ||||
| Length of day | 08:12 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Heidelberg in december 2025:
38°F to 43°F
34°F to 43°F
40°F to 45°F
41°F to 45°F
41°F to 43°F
40°F to 49°F
47°F to 49°F
54°F to 54°F
49°F to 54°F
45°F to 50°F
47°F to 50°F
45°F to 50°F
41°F to 49°F
40°F to 47°F
38°F to 47°F
40°F to 45°F
40°F to 45°F
43°F to 49°F
41°F to 49°F
47°F to 50°F
43°F to 49°F
40°F to 45°F
36°F to 43°F
36°F to 41°F
34°F to 40°F
32°F to 40°F
32°F to 40°F
32°F to 40°F
31°F to 38°F
34°F to 38°F
29°F to 34°F
Map: other cities in Germany in december
Cities near Heidelberg:
| Baden-Baden in december | very bad weather |
| Stuttgart in december | very bad weather |
| Frankfurt in december | very bad weather |
| Wurzburg in december | very bad weather |
| Rothenburg ob der Tauber in december | very bad weather |
| Saarbrücken in december | very bad weather |
| Schwarzwald (Black Forest) in december | very bad weather |
| Giessen in december | very bad weather |
| Cochem in december | very bad weather |
| Rust in december | very bad weather |
| Ulm in december | very bad weather |
| Freiburg in december | very bad weather |
Click over cities on the map for information about the weather in december.
Heidelberg
perfect weather
good
tolerable
bad
very bad
Weather data for Heidelberg in december:
Weather data for Heidelberg for december are derived from an average of the weather forecast since 2009 in Heidelberg. There is a margin of error and these forecasts are to be considered as general information only. The weather in Heidelberg can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Heidelberg.