January Weather in Grimbergen, Belgium

Last updated: August 21, 2025

In January, Grimbergen, Belgium experiences a brisk winter climate characterized by a maximum temperature reaching 14°C (58°F) and an average temperature of 4°C (40°F). The minimum temperature can plummet to -6°C (21°F), creating a chilly atmosphere. This month sees notable precipitation totaling 62 mm (2.4 in) over approximately 12 days, contributing to a high humidity level of 91%. Whether you're navigating frosty mornings or enjoying the serene winter scenery, Grimbergen in January offers a captivating yet cool experience.

January Temperature in Grimbergen

January in Grimbergen, Belgium, reveals a chill in the air as temperatures dip to a minimum of -6°C (21°F), creating a stark contrast to the month’s average of 4°C (40°F) and a maximum of 14°C (58°F). This blend of cold and mild temperatures marks the deep winter season, offering a glimpse of warmth amidst frosty days. As we transition into February, the cold intensifies with minimums plunging to -12°C (11°F), highlighting a trend towards sharper winter conditions. However, January itself stands out as a month of varied temperatures, hinting at the impending shift towards spring in the following months, where average highs steadily climb, promising brighter and warmer days ahead.

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

The chart illustrates January temperature patterns in Grimbergen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grimbergen, 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).
JanFebMarAprMayJunJulAugSepOctNovDec404245505765666660554642
Data source: Temperature data for Grimbergen generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Grimbergen

In January, Grimbergen experiences a moderate precipitation level of 62 mm (2.4 in), spread over 12 days of the month. This sets the stage for a slightly wetter February, with 67 mm (2.6 in) of rain, hinting at a gradual increase in moisture as winter transitions towards spring. As the months progress, precipitation continues to rise, peaking in December with a significant 89 mm (3.5 in), showcasing the seasonal shift towards wetter conditions. Interestingly, while January has a relatively low intensity of rainfall, the number of wet days remains consistent throughout winter, suggesting that precipitation is frequent but often light. This trend illustrates Grimbergen's transition from the chillier, damp beginnings of the year into the burgeoning spring, where rainfall becomes crucial for the vibrant blooms that follow.

January Precipitation Trends in Grimbergen

The chart displays monthly precipitation patterns in Grimbergen, 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 Grimbergen, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec626769385863677351795389
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Grimbergen

In Grimbergen, Belgium, January is marked by notably high humidity levels, averaging a significant 91%. This sets the tone for a winter characterized by dampness, as humidity only slightly decreases to 89% in February before continuing a gradual decline throughout the spring months, reaching 85% in April. As the year progresses into summer, humidity stabilizes around 80% in July and drops further to 76% in August, offering a brief respite from the moist conditions. However, this trend of lower humidity is short-lived; September sees an uptick back to 82% as autumn approaches. The final months of the year witness a return to higher moisture levels, with November and December both recorded at 92%, closing the year with the same damp atmosphere that January began with.

January Average Humidity in Grimbergen

This chart illustrates the average monthly humidity levels in Grimbergen, 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 Grimbergen is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%85%82%82%80%76%82%89%92%92%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Grimbergen

In January, Grimbergen, Belgium, experiences a low UV Index of 1, indicating minimal sun exposure risk with a burning time of 45 minutes. As winter progresses into February, the UV Index remains low at 2, maintaining the same burn time. However, as spring approaches in March and April, the UV Index begins to rise to 4 and 5, transitioning to moderate exposure levels where burn times decrease to 30 minutes. By May, the UV Index peaks to 7, marking the onset of high UV exposure, and burn times reduce further to 25 minutes. The summer months of June and July see the highest levels, with a very high Index of 8 and a quick burn time of only 15 minutes. As autumn sets in, the UV levels drop, with August at 7, transitioning to moderate readings of 5 in September and 3 in October, before returning to low levels in November and December with indices of 2 and 1 respectively. It’s clear that protecting your skin becomes increasingly vital as the year progresses, particularly in the sunniest months. For daily UV updates and forecasts, visit Grimbergen UV Index.

Maximum UV Index Levels in Grimbergen for January

The chart shows the monthly maximum UV Index (UVI) for Grimbergen 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 Grimbergen typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Grimbergen 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 Grimbergen

In Grimbergen, Belgium, **January shines with a modest 120 hours of sunlight, setting the stage for a gradual increase as the year unfolds. By February, sunny days bloom to 203 hours, hinting at the promise of spring. March brings more light, boasting 272 hours, while April and May experience a spectacular surge, reaching 348 and 397 hours, respectively. The peak of summer in June and July showcases 400 and 411 hours of glorious sunshine, inviting locals and visitors alike to revel in the outdoors. As August rolls in, the sunlight begins to wane slightly, with 383 hours, signaling the transition to autumn. From September onward, the days grow shorter, yielding 320 hours in September and reflecting a decline through the colder months, concluding the year with 143 hours in December. This annual journey of sunlight illustrates a vibrant rhythm, highlighting the delightful shift from wintry days to the warmth of summer.

Monthly Sunshine Duration in Grimbergen: January Highlighted

The January sunshine duration represents the total number of hours Grimbergen 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.
JanFebMarAprMayJunJulAugSepOctNovDec120h203h272h348h397h400h411h383h320h241h191h143h
Data source: Grimbergen January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Grimbergen During January

In Grimbergen, Belgium, January ushers in a meager 11% chance of sunny weather, making it one of the gloomiest months of the year. As the winter grips the region, sunshine becomes a rare commodity, with even the following months like February and March only beginning to show signs of improvement at 31% and 39% respectively. However, by the time spring arrives in April, the likelihood of basking in sunlight climbs dramatically to 48%, indicating a welcome shift towards brighter days. This upward trend continues into the summer months, where the chances of sun stabilize around the low to mid-30s. Thus, while January may feel dark and dreary, the gradual increase in sunny days signals better weather on the horizon.

Percentage of Sunny Days in January in Grimbergen

The chart illustrates the percentage of sunny days in Grimbergen 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 Grimbergen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec11%31%39%48%33%34%34%30%34%30%23%16%
Data source: Grimbergen January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Grimbergen in January

In Grimbergen, Belgium, January marks the beginning of a gradual increase in daylight, with just 8 hours illuminating the short winter days. As the months progress, daylight steadily extends, reaching 10 hours by February and peaking at an impressive 16 hours in June. This vibrant transition reflects the arrival of spring and summer, where the longer days invite outdoor activities and leisurely pursuits. However, as the year winds down, daylight begins to wane again, descending to 14 hours in August and retreating back to 8 hours by November. The seasonal cycle is further emphasized in December, when daylight dwindles to its annual low at just 7 hours, encapsulating the tranquil beauty of winter. This rhythm of increasing and decreasing daylight not only marks the passage of time but also underscores the enchanting variations in Grimbergen's landscape throughout the year.

Average Daylight Hours in Grimbergen for January

The chart illustrates the variation in daylight duration in Grimbergen throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 28m10h11h 55m13h 52m15h 34m16h 27m15h 59m14h 27m12h 34m10h 38m8h 54m7h 58m
Data source: Grimbergen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Grimbergen

In January, Grimbergen experiences an average wind speed of 4.3 m/s (10 mph), setting the tone for a brisk start to the year. As winter transitions into spring, wind speeds fluctuate slightly, peaking in February at 4.4 m/s, before gradually tapering off to a gentler 3.4 m/s in April. This trend marks a consistent decline as the warmer months approach, with June bringing the calmest winds at just 2.8 m/s (6 mph). However, as the year progresses, wind speeds begin to stabilize in the later months, averaging around 4.2 m/s in both October and December. Overall, January’s robust winds foreshadow a varied, yet settling, atmospheric pattern as Grimbergen transitions through the seasons.

Average January Wind Speed in Grimbergen

The chart displays monthly wind speed patterns in Grimbergen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.3 m/s4.43.93.44.22.83.23.33.04.23.24.0
Data source: Grimbergen January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Grimbergen Compares to Other Months

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

January and February weather show some notable differences as winter progresses. In January, temperatures range from a minimum of -6°C (21°F) to a maximum of 14°C (58°F), with an average of around 4°C (40°F). The month experiences 62 mm (2.4 in) of precipitation over 12 days, coupled with a high humidity of 91%. Conversely, February sees lower minimum temperatures of -12°C (11°F) but a slightly higher average of 6°C (42°F) and a maximum of 19°C (66°F). Precipitation increases slightly to 67 mm (2.6 in) over the same number of days, with humidity dipping a bit to 89%. For more detailed insights, check out Grimbergen weather in February.

In January, the weather is typically quite cold, with average temperatures hovering around 4°C (40°F) and nighttime lows dipping to -6°C (21°F). The month sees about 62 mm (2.4 in) of precipitation over approximately 12 days, coupled with high humidity at 91%. In contrast, March heralds the arrival of spring, with a slight increase in average temperature to 7°C (46°F) and maximum highs reaching 23°C (73°F). While March experiences a bit more precipitation at 69 mm (2.7 in) over about 14 days, humidity levels are slightly lower at 87%. For a more detailed look at the weather during this transitionary month, you can refer to this link: Grimbergen weather in March.

January and April present quite different weather experiences. In January, temperatures rarely rise above 14°C (58°F), with averages around 4°C (40°F) and occasional dips to a chilling -6°C (21°F). This wintry month sees considerable humidity at 91% and a fair amount of precipitation, totaling 62 mm (2.4 in) over approximately 12 days. Conversely, April brings a significant shift as temperatures climb, with highs reaching 27°C (81°F) and an average of 10°C (51°F). While it experiences less rainfall—38 mm (1.5 in) spread over about 8 days—April's humidity is slightly lower at 85%. For more detailed insights on the April weather, you can visit Grimbergen weather in April.

In January, the weather is notably colder, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 14°C (58°F), creating a chill that permeates the month. The average temperature hovers around 4°C (40°F), and the high humidity of 91% coupled with 62 mm (2.4 inches) of precipitation over 12 days often contributes to a gloomy atmosphere.

In contrast, May brings a significant shift, showcasing much warmer temperatures, with lows of 1°C (35°F) and highs reaching up to 31°C (88°F). The average temperature rises to 14°C (57°F), and although precipitation is slightly less at 58 mm (2.3 inches) over the same number of days, the humidity drops to 82%, resulting in a more pleasant and inviting climate. For more specific details on how the weather unfolds, you can check Grimbergen weather in May.

In January, the weather is considerably colder, with temperatures ranging from a chilly -6°C (21°F) to a milder 14°C (58°F), accompanied by high humidity levels of 91%. This month experiences an average of 62 mm (2.4 in) of precipitation over approximately 12 days, contributing to a wintry atmosphere. In contrast, June brings a noticeable warmth, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 32°C (91°F) and an average of 18°C (65°F). The month sees slightly less precipitation at 63 mm (2.5 in) but over fewer days, around 9, and the humidity drops to 82%, creating a more comfortable and pleasant climate. For more detailed insights, you can explore Grimbergen weather in June.

In January, the weather is notably colder, with temperatures ranging from a chilling -6°C (21°F) to a maximum of 14°C (58°F) and an average of 4°C (40°F). The month is quite damp, receiving about 62 mm (2.4 in) of precipitation over 12 days, accompanied by high humidity levels at 91%. In contrast, July brings much warmer conditions, with temperatures ranging from a minimum of 8°C (47°F) to a scorching maximum of 39°C (102°F) and an average of 19°C (67°F). Although July sees slightly more precipitation at 67 mm (2.6 in) over 11 days, the humidity is lower at 80%. For those curious about July weather specifics, you can find more details here: Grimbergen weather in July.

In January, the weather is quite chilly, with average temperatures hovering around 4°C (40°F) and minimum lows dipping to -6°C (21°F). The month is characterized by high humidity at 91% and frequent precipitation, with rain or snow occurring on approximately 12 days, totaling 62 mm (2.4 in).

In contrast, August offers a much warmer and more pleasant climate, with average temperatures reaching 19°C (66°F) and maximum highs peaking at 35°C (96°F). Although it sees slightly more precipitation at 73 mm (2.9 in) over 14 days, the humidity is lower at 76%, making it a more comfortable time of year. For a detailed look at August weather patterns, visit Grimbergen weather in August.

In comparing the weather between January and September, we see a significant shift in temperature and humidity. January experiences much colder temperatures, with a minimum of -6°C (21°F) and an average of 4°C (40°F), whereas September boasts milder conditions with minimums of 4°C (40°F) and an average of 16°C (60°F), peaking at a warm 33°C (91°F). Precipitation is slightly higher in January at 62 mm (2.4 in) over 12 days, compared to September's 50 mm (2.0 in) over just 9 days. Additionally, January's humidity is relatively high at 91%, while September's humidity eases to 82%. For a more detailed overview of September's weather, visit Grimbergen weather in September.

In comparing January and October weather, January features chilly temperatures with a minimum of -6°C (21°F) and an average of 4°C (40°F), while October offers a milder climate, with temperatures ranging from a minimum of 2°C (35°F) to an average of 13°C (55°F). Precipitation is slightly higher in October at 79 mm (3.1 in) over 13 days, compared to January's 62 mm (2.4 in) across 12 days, indicating a wetter month. Humidity levels are quite similar, with January at 91% and October at 89%, creating a generally damp atmosphere during both months. For more details on October weather, check out Grimbergen weather in October.

In comparing the weather of January and November, we see distinct shifts in temperature and climatic conditions. In January, the minimum temperature drops to -6°C (21°F), with an average of 4°C (40°F) and a maximum reaching 14°C (58°F). This month experiences a higher level of precipitation at 62 mm (2.4 in) over approximately 12 days and maintains a humid atmosphere with 91% humidity.

In contrast, November presents milder conditions, with temperatures ranging from a minimum of -2°C (28°F) to an average of 8°C (46°F), peaking at 19°C (66°F). The total precipitation is slightly lower at 53 mm (2.1 in), observed over about 11 days, and the humidity is slightly higher at 92%. For those interested in more detailed insights on the weather during this month, visit Grimbergen weather in November.

January and December exhibit notably similar weather patterns, though there are subtle differences. January's temperatures range from a minimum of -6°C (21°F) to a maximum of 14°C (58°F), with an average of 4°C (40°F). In contrast, December is slightly warmer, with temperatures ranging from -4°C (24°F) to 15°C (59°F) and an average of 6°C (43°F). Precipitation is also a key factor, as January sees about 62 mm (2.4 in) over 12 days, while December has a higher total of 89 mm (3.5 in) spread over 16 days. Humidity remains consistent, with January at 91% and December just slightly higher at 92%. For a more detailed look at December weather in this region, you can visit Grimbergen weather in December.

Compare Grimbergen's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Grimbergen

As January settles in Grimbergen, the climate takes on a distinctly chilly demeanor compared to other months. With an average temperature hovering around 4°C (40°F), this month is marked by frosty mornings and brisk afternoons, creating a stark contrast to the milder seasons. Precipitation is frequent, with about 12 days of rain contributing to a damp atmosphere and high humidity levels soaring to 91%. While other months may offer warmer and drier conditions, January invites residents and visitors alike to embrace the cozy indoors or venture out into its crisp, invigorating air. For a deeper understanding of what to expect throughout the year, explore the nuances of Grimbergen Climate.