Climate averages 1991–2020
Groningen weather
in December.
A cold, moderately wet month: the 11th warmest and the joint 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Groningen: daytime highs average 5.6°C and nights cool to about 1.7°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 63 mm of rain on roughly 12 days, which makes December a moderately wet month (the joint 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 7 h 38 min on an average December day.
The nearest other city in this atlas is Leeuwarden (50 km away). In December its highs average 6.1°C, 0.5°C warmer than Groningen, with 71 mm of rain.
Among the 44 cities listed in the Netherlands, Groningen ranks joint 41st of 44 for the warmest December highs and 1st of 44 for the driest December (rainfall, lowest first). The mean December high of those 44 cities is 6.2°C; Groningen is 0.6°C cooler than that mean.
From December to January, average highs fall by 0.7°C to 4.9°C, and monthly rainfall stays at 63 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Groningen climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.9°C0.8°C | 0.8°C | 63 | 12.6 | 8.18 h |
| February | 5.7°C0.7°C | 0.7°C | 49 | 10.5 | 9.810 h |
| March | 8.7°C2.3°C | 2.3°C | 49 | 10.9 | 11.812 h |
| April | 12.7°C5.0°C | 5.0°C | 48 | 10.7 | 13.914 h |
| May | 16.2°C8.7°C | 8.7°C | 60 | 11.8 | 15.816 h |
| June | 18.8°C11.6°C | 11.6°C | 74 | 12.2 | 16.917 h |
| July | 20.9°C14.0°C | 14.0°C | 87 | 14.3 | 16.416 h |
| August | 20.9°C14.1°C | 14.1°C | 83 | 14.0 | 14.815 h |
| September | 17.8°C11.7°C | 11.7°C | 68 | 12.1 | 12.713 h |
| October | 13.4°C8.1°C | 8.1°C | 63 | 12.5 | 10.611 h |
| November | 8.7°C4.5°C | 4.5°C | 57 | 12.2 | 8.79 h |
| December, selected | 5.6°C1.7°C | 1.7°C | 63 | 12.4 | 7.68 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Leeuwarden in DecemberThe Netherlands · 50 kmHigh 6.1°C · Low 2.7°C · 71 mm rain
- Zwolle in DecemberThe Netherlands · 85 kmHigh 5.7°C · Low 1.6°C · 69 mm rain
- Almelo in DecemberThe Netherlands · 96 kmHigh 5.6°C · Low 1.3°C · 73 mm rain
- Hengelo in DecemberThe Netherlands · 107 kmHigh 5.6°C · Low 1.5°C · 73 mm rain
- Lelystad in DecemberThe Netherlands · 108 kmHigh 6.1°C · Low 2.5°C · 78 mm rain
- Wilhelmshaven in DecemberGermany · 108 kmHigh 5.2°C · Low 1.4°C · 63 mm rain
- Oldenburg in DecemberGermany · 110 kmHigh 5.1°C · Low 1.3°C · 66 mm rain
- Deventer in DecemberThe Netherlands · 111 kmHigh 5.7°C · Low 1.6°C · 69 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Groningen) is explained once on the Groningen year overview and on the Sources, method and limits page.