January Weather in Groningen, Netherlands

Last updated: August 27, 2025

January in Groningen, Netherlands, presents a striking blend of winter chill and dampness, with average temperatures hovering around 4°C (39°F). The month can be characterized by its significant temperature fluctuations, peaking at a mild 13°C (57°F) and dipping as low as -7°C (19°F). Rain is a frequent visitor, with 59 mm (2.3 in) of precipitation spread over 13 days, contributing to the month's high humidity level of 88%. Despite the cold, the atmospheric conditions create a picturesque winter landscape, inviting exploration of the city's charm during this frosty season.

January Temperature in Groningen

In Groningen, January presents a chilly backdrop to the Dutch winter, with temperatures ranging from a biting -7°C (19°F) to a milder 13°C (57°F). The average temperature hovers around 4°C (39°F), setting the stage for a crisp season where frosty mornings give way to brighter afternoons. Notably, despite the dip in temperatures, this month marks the transition towards slightly warmer days as February approaches, which can bring even colder spells with lows of -12°C (10°F). As the winter unfolds, the gradual warming trend is evident, suggesting that the freezing days of January slowly thaw into the more temperate climate of early spring.

January Weather in Groningen: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Groningen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Groningen, January typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec394043485462646458534541
Data source: Temperature data for Groningen generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Groningen

In January, Groningen experiences an average precipitation of 59 mm (2.3 inches) over approximately 13 days, setting the stage for a typically damp winter month. This level of rainfall is quite consistent, only slightly edging out February's 57 mm. However, as winter gives way to spring, precipitation tends to rise, peaking in June with 78 mm and continuing through the summer months, reaching a notable 95 mm in July. Interestingly, while January may feel wet, it's part of a larger pattern where rainfall generally increases from the beginning to the middle of the year, showing a distinct seasonal rhythm. Thus, while the January drizzle is characteristic of the season, it paves the way for even wetter days ahead as nature awakens and flourishes.

January Precipitation Trends in Groningen

The chart displays monthly precipitation patterns in Groningen, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Groningen, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec595867446878958967855174
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Groningen

In January, Groningen experiences a notably high humidity level of 88%, a trend that persists into February. As winter progresses, the humidity slightly decreases to 86% in March, indicating a gradual shift towards drier conditions. The arrival of spring in April brings further relief with humidity dropping to 84%, and this downward trajectory continues through May at 80%. However, summer sees humidity stabilizing at a comfortable 75% from June to August. As autumn sets in, humidity levels begin to rise again, reaching 83% in September and fluctuating between 86% and 87% by the end of the year. Overall, Groningen's January humidity heralds a pattern of high winter moisture, followed by a gradual decline that concludes with a return to wetter conditions in fall.

January Average Humidity in Groningen

This chart illustrates the average monthly humidity levels in Groningen, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Groningen is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%86%84%80%75%75%75%83%86%87%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Groningen

In January, Groningen experiences a UV Index of 1, categorizing exposure as low. This means residents can safely enjoy the outdoors, with a burn time of up to 45 minutes before sun protection is needed. As the year progresses into February, the UV Index slightly rises to 2, yet the exposure remains low, maintaining the same burn time. By March, however, it escalates to 3, indicating a moderate exposure level where one should start considering sun safety measures, as the burn time decreases to 30 minutes. This trend of increasing sun intensity continues into the following months, peaking in June at a very high UV Index of 8, with a significantly reduced burn time of just 15 minutes. From then on, the UV levels slightly recede through the summer and into the fall months, winding down with a return to low UV Index levels by December. For more insights on safe sun exposure, check the detailed Groningen UV Index.

Maximum UV Index Levels in Groningen for January

The chart shows the monthly maximum UV Index (UVI) for Groningen in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Groningen typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123578775321
Data source: Groningen January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Groningen

January in Groningen welcomes the year with a modest 99 hours of sunshine, setting a reflective tone as the community transitions from the holiday season. As the calendar flips to February, the days gradually brighten with 198 hours of sunlight, hinting at the promise of spring. This upward trend continues through March, where sunshine peaks at 277 hours, invigorating the spirits of residents. April and May further elevate the mood, basking in 351 and 404 hours, respectively, as outdoor activities become increasingly popular. The sun-soaked summer months of June and July maintain this momentum, offering nearly equal hours at 396 and 405 hours, creating vibrant atmospheres throughout the city. However, as summer wanes into August and September, the hours gradually decline to 390 and 319, urging a shift back indoors. October and November bring further reductions to 240 and 185 hours of sunshine, while December wraps up the year with a cozy 131 hours, inviting reflection as the community embraces the winter season once more. Overall, Groningen experiences an uplifting arc of sunlight from the chill of winter into the warmth of summer, before settling back into the quieter, darker days of the final months.

Monthly Sunshine Duration in Groningen: January Highlighted

The January sunshine duration represents the total number of hours Groningen experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec99h198h277h351h404h396h405h390h319h240h185h131h
Data source: Groningen January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Groningen During January

In Groningen, Netherlands, the likelihood of sunny weather in January stands at a modest 21%, making it one of the cloudier months of the year. This trend gradually improves as winter transitions into spring, with February seeing a slight increase to 25%. As we move through the seasons, sunshine becomes more frequent, with a notable jump to 34% in March and 42% by April. Interestingly, while May experiences a slight dip to 30%, the following months maintain a relatively consistent chance of clear skies, peaking in the mid-spring. Overall, January's dim prospects for sun are overshadowed by the promise of brighter days ahead, emphasizing the gradual yet significant shift in weather patterns as the year progresses.

Percentage of Sunny Days in January in Groningen

The chart illustrates the percentage of sunny days in Groningen throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Groningen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%25%34%42%30%38%30%33%30%27%18%20%
Data source: Groningen January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Groningen in January

In Groningen, the transition from January to June brings a delightful increase in daylight, with January starting at just 8 hours and soaring to 16 hours by June. This gradual ascent hints at the promise of warmer days ahead, as each successive month adds an extra hour or two of sunlight. However, by the time we reach mid-summer, daylight begins to wane, dipping to 14 hours in August and gradually diminishing to 8 hours by November. The cycle of daylight in Groningen beautifully reflects the changing seasons, beginning with the crisp, shorter days of winter and culminating in the long, sun-soaked days of summer, before gently transitioning back to the more subdued light of autumn and winter.

Average Daylight Hours in Groningen for January

The chart illustrates the variation in daylight duration in Groningen throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 8m9h 50m11h 54m14h 1m15h 53m16h 52m16h 20m14h 40m12h 37m10h 31m8h 37m7h 35m
Data source: Groningen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Groningen

January in Groningen ushers in a steady average wind speed of 4.4 m/s (10 mph), setting a tone that is consistent with the breezy conditions of early winter. As the month unfolds, wind speeds slightly increase into February, reaching 4.7 m/s (10 mph), marking a trend where the first quarter of the year remains relatively blustery, with averages maintaining a range from 4.2 to 5.1 m/s. This trend gradually shifts as spring approaches, bringing a slight dip in wind intensity during the warmer months, with July and June experiencing the calmest breezes at 3.3 m/s and 3.7 m/s, respectively. As the seasons transition back into autumn, the winds pick up again, peaking in October at 5.1 m/s, before averaging down once more toward year’s end. Overall, January’s winds are part of a broader seasonal pattern that oscillates between lively breezes and calmer days, reflecting the dynamic climate of this charming Dutch city.

Average January Wind Speed in Groningen

The chart displays monthly wind speed patterns in Groningen, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.4 m/s4.74.74.54.23.33.74.23.55.14.24.6
Data source: Groningen January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Groningen Compares to Other Months

Weather in Groningen varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Groningen, focusing on differences in temperature, rainfall, humidity, and UV levels.

January and February share similar average temperatures, with both months experiencing a chill, but February tends to dip slightly lower with a minimum temperature of -12°C (10°F) compared to January's -7°C (19°F). Despite the colder nights, February boasts a higher maximum temperature of 18°C (64°F), which is a noticeable increase from January's 13°C (57°F). Precipitation levels remain consistent in both months, with January receiving 59 mm (2.3 in) over 13 days, while February sees just slightly less at 57 mm (2.3 in) across 11 days. Humidity levels remain steady at 88% for both months, contributing to the overall damp feel often associated with winter in Groningen. For more detailed information, check out Groningen weather in February.

In January, temperatures range from a minimum of -7°C (19°F) to a maximum of 13°C (57°F), with an average of 4°C (39°F). The month sees about 59 mm (2.3 in) of precipitation spread over 13 days, accompanied by relatively high humidity at 88%. In contrast, March presents a slightly warmer climate, with temperatures dipping to -10°C (15°F) at night and reaching up to 20°C (68°F) during the day, averaging 6°C (43°F). Precipitation increases slightly to 67 mm (2.7 in), also over 13 days, while humidity remains comparable at 86%. For a more detailed look at March weather, visit Groningen weather in March.

In comparing the weather between January and April, it’s clear that April brings a noticeable shift towards milder conditions. While January's temperatures dip to a minimum of -7°C (19°F) and average around 4°C (39°F), April sees a significant increase, with temperatures ranging from a minimum of -2°C (28°F) to an average of 9°C (48°F). The maximum temperature in April can climb to a warm 27°C (81°F), compared to January's highest at 13°C (57°F). Additionally, April experiences less precipitation, with only 44 mm (1.7 in) over 9 days, in contrast to January's 59 mm (2.3 in) over 13 days. Despite this decrease in precipitation, humidity remains relatively high in both months, at 88% in January and slightly lower at 84% in April. For more detailed insights, visit Groningen weather in April.

In January, the weather in Groningen is quite cold, with temperatures ranging from a chilly -7°C (19°F) at night to a mild 13°C (57°F) during the day, while the average temperature hovers around 4°C (39°F). The month experiences significant precipitation, amounting to 59 mm (2.3 in) over 13 days, and humidity levels are high at 88%.

In contrast, May brings a noticeable warming trend, with temperatures fluctuating between a minimum of 1°C (33°F) and a maximum of 29°C (85°F), leading to an average of 12°C (55°F). Although May sees a slight increase in precipitation to 68 mm (2.7 in) over the same number of days, the humidity drops to a more comfortable 80%. For more details on the weather in May, visit Groningen weather in May.

January and June exhibit stark contrasts in weather conditions. In January, temperatures can drop as low as -7°C (19°F) and average around 4°C (39°F), while highs reach only 13°C (57°F). This month also sees a significant amount of precipitation, totaling 59 mm (2.3 in) over 13 days, accompanied by high humidity levels at 88%. In contrast, June brings milder weather with minimum temperatures of 6°C (43°F), average highs of 17°C (63°F), and peaks soaring up to 33°C (92°F). While June experiences more precipitation at 78 mm (3.1 in), it has fewer rainy days, occurring on just 11 days, and the humidity drops to a more comfortable 75%. For a detailed look at the specific conditions, check Groningen weather in June.

January and July in Groningen offer starkly contrasting weather experiences. In January, temperatures can drop as low as -7°C (19°F), with an average of 4°C (39°F) and maximums reaching 13°C (57°F). The month is often characterized by high humidity at 88% and considerable precipitation, totaling 59 mm (2.3 in) over about 13 days. In contrast, July brings much milder conditions, with temperatures ranging from a minimum of 8°C (47°F) to highs soaring up to 35°C (95°F) and an average of 18°C (64°F). Rainfall increases slightly to 95 mm (3.7 in), experienced over 14 days, but the humidity decreases to 75%. For a closer look at the July weather, check out Groningen weather in July.

January and August in Groningen present starkly contrasting weather patterns. In January, temperatures range from a chilly -7°C (19°F) to a mild 13°C (57°F), with an average of around 4°C (39°F). The month is characterized by high humidity at 88% and frequent precipitation occurring over 13 days, totaling 59 mm (2.3 in). In contrast, August boasts much warmer temperatures, with a minimum of 10°C (50°F) and a maximum soaring to 34°C (93°F), averaging 18°C (65°F). However, it experiences slightly more rainfall, with 89 mm (3.5 in) over 16 days, accompanied by a lower humidity level of 75%. For a deeper look at the August weather specifics, you can visit Groningen weather in August.

January and September in Groningen present contrasting weather experiences. In January, temperatures range from a frigid -7°C (19°F) at night to a mild 13°C (57°F) during the day, with an average temperature of 4°C (39°F). Humidity is notably high at 88%, and there are 13 days of precipitation, totaling 59 mm (2.3 in). In contrast, September boasts a more moderate climate with nighttime lows of 5°C (42°F) and daytime highs reaching 29°C (85°F), averaging around 15°C (59°F). The humidity lowers slightly to 83%, with 12 days of rain that accumulate 67 mm (2.6 in). For a detailed overview of the weather in September, you can visit Groningen weather in September.

January and October present distinct weather patterns in Groningen. January is characterized by colder temperatures, with a minimum reaching -7°C (19°F) and an average of only 4°C (39°F), while October boasts milder conditions, with temperatures ranging from a minimum of -1°C (31°F) to a more comfortable average of 12°C (53°F) and maximums climbing as high as 26°C (79°F). Precipitation is relatively higher in October, totaling 85 mm (3.3 in) over 15 days, compared to January's 59 mm (2.3 in) spread across 13 days. Humidity remains high in both months, but slightly decreases from January's 88% to October's 86%. For a more detailed look at October’s climate, visit Groningen weather in October.

In January, the weather is significantly colder, with temperatures ranging from a minimum of -7°C (19°F) to a maximum of 13°C (57°F), while November enjoys milder conditions, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 18°C (65°F). Precipitation levels are somewhat similar, with January receiving 59 mm (2.3 inches) over 13 days and November having slightly less at 51 mm (2.0 inches) across 12 days. Additionally, January’s humidity is slightly higher at 88%, compared to November's 87%. For more detailed information, you can visit Groningen weather in November.

In January, the weather remains quite chilly with average temperatures ranging from a minimum of -7°C (19°F) to a maximum of 13°C (57°F). While January experiences slightly less precipitation at 59 mm (2.3 in) over 13 days, it maintains a high humidity level of 88%. In contrast, December shows a similar low of -7°C (19°F), but has a marginally higher average temperature of 5°C (41°F), with maximums reaching 13°C (55°F). December also sees more rainfall, totaling 74 mm (2.9 in) over 16 days, accompanied by a slightly lower humidity of 86%. For a detailed look at the December weather in Groningen, visit Groningen weather in December.

Compare Groningen's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Groningen

As winter tightens its grip in Groningen, January marks a notable shift in the climate, characterized by brisk chills and high humidity. With temperatures often dipping below freezing, this month contrasts sharply with the milder weather of the preceding months. Precipitation is also more common, with nearly half the days seeing some rain or snow, making January one of the wetter months of the year. The atmosphere, dense with an average humidity of 88%, can leave one feeling quite frosty. To understand how the rest of the year compares, check out the detailed overview at Groningen Climate.