December Weather in Heilbronn

Last updated: March 2, 2024

The weather in Heilbronn, Germany, during December is characterized by an average temperature of 3°C (38°F). Highs can soar to 12°C (54°F), while lows may dip to -5°C (24°F). Typically, the humidity level in Heilbronn throughout December hovers around 91%.

-5°C (24°F)

Minimum temperature

3°C (38°F)

Average temperature

12°C (54°F)

Maximum temperature

91%

Humidity

Precipitation and Sunshine hours

In December, Heilbronn averages 130 mm (5.1 inches) of rainfall, typically over the course of 19 rainy days. The month enjoys an average of 8 hours 14 minutes of daylight, with the sun shining for approximately 4 hours 37 minutes each day. Additionally, there is a 15% probability of sunny days during this period.

130 mm (5.1 inches)

Precipitation

19 rainy days

Rainy days

4 hours 37 minutes

Sunshine hours

15%

Chance of sun

UV Index

In December, the UV Index in Heilbronn reaches a maximum of 1, indicating a level of Low exposure. The most intense UV radiation typically occurs between 08:00 and 10:00, during which unprotected skin may burn in as little as 45 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 0 1 1 1 1 1 1 1 1 1 0 0 0
Exposure Low
Time to burn 45 min

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