Groningen climate
Groningen (The Netherlands) has a temperate oceanic climate (Köppen Cfb). The average temperature over the year is 10 °C50 °F, and about 791 mm31 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Groningen climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 440 | 031 | 235 | 773.0 | 14 |
| Feb | 541 | 031 | 236 | 612.4 | 14 |
| Mar | 948 | 134 | 541 | 542.1 | 10 |
| Apr | 1457 | 440 | 948 | 391.5 | 2 |
| May | 1763 | 846 | 1355 | 582.3 | 0 |
| Jun | 2069 | 1153 | 1661 | 642.5 | 0 |
| Jul | 2272 | 1457 | 1864 | 793.1 | 0 |
| Aug | 2272 | 1356 | 1864 | 823.2 | 0 |
| Sep | 1966 | 1151 | 1558 | 632.5 | 0 |
| Oct | 1457 | 744 | 1051 | 672.6 | 1 |
| Nov | 948 | 439 | 643 | 702.7 | 4 |
| Dec | 541 | 134 | 338 | 773.0 | 11 |
| Year | 2272 | 031 | 1050 | 79131 | 56 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 93% | 83% | 0.6 | 8:03 |
| Feb | 90% | 80% | 1.3 | 9:45 |
| Mar | 85% | 74% | 2.6 | 11:41 |
| Apr | 80% | 65% | 4.2 | 13:54 |
| May | 78% | 68% | 5.2 | 15:50 |
| Jun | 77% | 72% | 5.4 | 16:56 |
| Jul | 78% | 71% | 5.1 | 16:29 |
| Aug | 79% | 71% | 4.3 | 14:45 |
| Sep | 82% | 71% | 3.0 | 12:35 |
| Oct | 87% | 77% | 1.7 | 10:27 |
| Nov | 92% | 83% | 0.7 | 8:32 |
| Dec | 94% | 84% | 0.5 | 7:33 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Groningen is like
The warmest month is July, with an average high of 22 °C72 °F and a low of 14 °C57 °F. The coldest is January, when highs average 4 °C40 °F and lows 0 °C31 °F. There is a clear seasonal cycle, with 16.1 °C28.9 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 791 mm31 in. The wettest three-month stretch is June–August, which brings 28% of the annual total. The wettest month is August (82 mm3.2 in), the driest is April (39 mm1.5 in).
Relative humidity ranges from 77% in June to 94% in December. The clearest skies (lowest average cloud amount, 65%) are typical of April. Average wind speed near the ground ranges from 12 km/h (7 mph) in August to 16 km/h (10 mph) in January. Daylight lasts from about 7.5 hours in December to 16.9 hours in June.
Best time to visit Groningen
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–September: average highs of 19 °C66 °F to 22 °C72 °F with 63 mm2.5 in to 82 mm3.2 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 4 °C40 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Groningen
- Winter (December–February) — highs 440 to 5 °C41 °F, lows 031 to 1 °C34 °F, about 72 mm2.8 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Spring (March–May) — highs 948 to 17 °C63 °F, lows 134 to 8 °C46 °F, about 50 mm2.0 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Summer (June–August) — highs 2069 to 22 °C72 °F, lows 1153 to 14 °C57 °F, about 75 mm3.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Autumn (September–November) — highs 948 to 19 °C66 °F, lows 439 to 11 °C51 °F, about 67 mm2.6 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Groningen compares
Compared with Amsterdam, about 147 km to the southwest, Groningen is on average 0.6 °C1.1 °F cooler and receives a similar amount of precipitation. The difference is largest in January (1.5 °C2.6 °F cooler).
Of the 17 places in The Netherlands covered by World Climates, Groningen is the 17th warmest by annual mean temperature and the 10th wettest by annual precipitation. See all of them on the The Netherlands climate page.
Places in other countries with the most similar temperature and rainfall pattern: Oldenburg (Germany, Cfb), Charleroi (Belgium, Cfb) and Bremerhaven (Germany, Cfb).
Nearby places
- Leeuwarden 50 km · 10 °C51 °F · 824 mm32 in
- Zwolle 85 km · 10 °C50 °F · 787 mm31 in
- Oldenburg 110 km · 10 °C49 °F · 760 mm30 in
- Enschede 113 km · 10 °C50 °F · 769 mm30 in
- Apeldoorn 119 km · 10 °C50 °F · 768 mm30 in
- Almere Stad 131 km · 10 °C51 °F · 827 mm33 in
- Bremerhaven 138 km · 9 °C49 °F · 790 mm31 in
- Amersfoort 143 km · 10 °C50 °F · 792 mm31 in
Frequently asked questions
What is the warmest month in Groningen?
July is the warmest month in Groningen, with an average high of 22 °C (72 °F) and an average low of 14 °C (57 °F).
What is the coldest month in Groningen?
January is the coldest month, with an average high of 4 °C (40 °F) and an average low of 0 °C (31 °F).
When does it rain the most in Groningen?
August is the wettest month with about 82 mm (3.2 in) of precipitation; April is the driest with about 39 mm (1.5 in).
What is the best time to visit Groningen?
Judging by long-term averages, the most comfortable months are June–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.