Climate averages 1991–2020
Groningen weather
in January.
A cold, moderately wet month: the coolest and the joint 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Groningen: daytime highs average 4.9°C and nights cool to about 0.8°C. By daytime temperature it is the coolest month of the year.
Expect about 63 mm of rain on roughly 13 days, which makes January a moderately wet month (the joint 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 09 min on an average January day.
The nearest other city in this atlas is Leeuwarden (50 km away). In January its highs average 5.2°C, about as warm as Groningen, with 65 mm of rain.
Among the 44 cities listed in the Netherlands, Groningen ranks joint 43rd of 44 for the warmest January highs and joint 7th of 44 for the driest January (rainfall, lowest first). The mean January high of those 44 cities is 5.6°C; Groningen is 0.8°C cooler than that mean.
From January to February, average highs rise by 0.8°C to 5.7°C, and monthly rainfall falls from 63 mm to 49 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Leeuwarden in JanuaryThe Netherlands · 50 kmHigh 5.2°C · Low 1.8°C · 65 mm rain
- Zwolle in JanuaryThe Netherlands · 85 kmHigh 5.2°C · Low 0.8°C · 66 mm rain
- Almelo in JanuaryThe Netherlands · 96 kmHigh 5.1°C · Low 0.5°C · 68 mm rain
- Hengelo in JanuaryThe Netherlands · 107 kmHigh 5.0°C · Low 0.6°C · 68 mm rain
- Lelystad in JanuaryThe Netherlands · 108 kmHigh 5.5°C · Low 1.6°C · 71 mm rain
- Wilhelmshaven in JanuaryGermany · 108 kmHigh 4.5°C · Low 0.5°C · 64 mm rain
- Oldenburg in JanuaryGermany · 110 kmHigh 4.5°C · Low 0.3°C · 66 mm rain
- Deventer in JanuaryThe Netherlands · 111 kmHigh 5.2°C · Low 0.8°C · 65 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.