Mainz weather in December
Temperature, rain and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: May – September
What is the weather like in Mainz in December?
In December, Mainz is cold: daytime highs average 5 °C, and nights cool down to about 1 °C. The sun is scarce, with only about 1 hours a day. Rain is frequent, with about 13 rainy days and 62 mm in total. Snow falls on about 2 days. All in all, December is not an ideal month for a holiday in Mainz.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 17 | 10 | 14 |
| Day | 9° | 5° | 4° |
| Night | 4° | 1° | −1° |
| Sun | 2 h | 1 h | 2 h |
| Rain days | 12 | 13 | 12 |
More details for December
- Daylight
- 8 h 7 min08:18 – 16:26
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 78 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 2 days1 cm or more of fresh snowAll months
- Time zone
- UTC+1Europe/Berlin
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %34 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Warm jacket
- Hat, scarf & gloves
- Rain jacket or umbrella
Mainz in December: quick answers
Is Mainz hot in December?
No. In December, Mainz is cold: daytime highs average 5 °C and nights drop to about 1 °C.
Does it rain much in Mainz in December?
Rain is frequent, with about 13 rainy days and 62 mm in total.
Mainz month by month
The whole year in MainzAll destinations: GermanyWhere to go in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences