Heidelberg Weather in December

During December, Heidelberg experiences high daytime temperatures of 25°C (77°F) and cooler nights around 12°C (54°F). As part of the summer season, expect quite a bit of rainfall. Around 67 mm (2.6 in) is typical.

Rainfall in Heidelberg in December

Records from the past 30 years suggest around 9 days of rain, with 67 mm (2.6 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Heidelberg in December

Heidelberg has excellent weather in December, with days reaching 25°C (77°F) and nights cooling to 12°C (54°F). December is in the summer season. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Heidelberg in December

With approximately 265 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Heidelberg in December

Wind speeds average 3 m/s (6 knots) during December. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Average water temperature in December

At 16°C (61°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

If you're inclined towards comfortable temperatures and drier conditions, December is a good time to visit Heidelberg.