January Weather in Waterloo, Belgium

Last updated: August 21, 2025

January in Waterloo, Belgium, presents a chilly yet intriguing climate, with temperatures ranging from a maximum of 14°C (57°F) to a minimum of -7°C (20°F), averaging around 4°C (39°F). This winter month is characterized by high humidity levels, sitting at 91%, which, combined with 12 days of precipitation totaling 65 mm (2.6 in), creates a rather damp atmosphere. Visitors can expect the charm of winter weather, complete with a mix of cold days and sporadic rainfall, making Waterloo a unique winter destination.

January Temperature in Waterloo

In Waterloo, Belgium, January temperatures present a stark contrast to the milder months ahead. The month starts with minimum lows plummeting to around -7°C (20°F), providing a chilly backdrop as temperatures average 4°C (39°F), with highs reaching a temperate 14°C (57°F). This transitional month signals the end of winter's grasp, but still retains those frosty nights and early mornings. As February rolls in, the cold deepens slightly with even lower minimums at -9°C (17°F), yet the average continues to climb, reflecting a gradual shift towards the more moderate spring temperatures that approach in March and April. This upward trend in temperature hints at the promise of warmer days ahead, as the winter chill begins to wane and anticipation builds for the vibrant life that spring brings.

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

The chart illustrates January temperature patterns in Waterloo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waterloo, 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).
JanFebMarAprMayJunJulAugSepOctNovDec394145505664666660544542
Data source: Temperature data for Waterloo 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 Waterloo

In January, Waterloo, Belgium, experiences an average precipitation of 65 mm (2.6 in) over 12 days of rain. This sets the tone for a typically wet winter season, as January ranks just below the wetter months of December and October, which see significantly higher totals. Interestingly, the rainfall begins to rise steadily from this point, peaking in August with 84 mm (3.3 in). The trend indicates that while January may be damp, it is part of a cycle where precipitation gradually increases until mid-summer, before tapering off in the fall months. This pattern highlights the region's seasonal variability, balancing its cool, moist winters with relatively lush, rainy summers.

January Precipitation Trends in Waterloo

The chart displays monthly precipitation patterns in Waterloo, 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 Waterloo, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec657071376072748458785892
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Waterloo

In January, Waterloo, Belgium experiences its highest humidity level of the year at a striking 91%, setting the stage for a damp and chilly start to winter. As the month transitions into February and March, humidity gradually decreases to 89% and 87% respectively, marking a subtle shift toward slightly drier conditions. This trend continues until April, where humidity dips to 85%, creating a refreshing feel as spring approaches. However, as the year progresses, a mild increase in humidity is observed in October, climbing back up to 89% and peaking again in the colder months of November and December, both featuring 92% humidity. Overall, while January starts off the year with high moisture levels, the gradual month-to-month decline hints at a seasonal rhythm that ultimately returns to its wet high by year’s end.

January Average Humidity in Waterloo

This chart illustrates the average monthly humidity levels in Waterloo, 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 Waterloo 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 Waterloo

In January, Waterloo, Belgium experiences a UV Index of 1, categorized as low, allowing for a generous burn time of 45 minutes before risking skin damage from sun exposure. This trend of low UV radiation continues into February, where the index rises slightly to 2, but still maintains a safe exposure level. As spring approaches, March sees a notable increase, with the UV Index jumping to 4 and transitioning to a moderate exposure category, which reduces burn time to 30 minutes. The months of April and May further amplify this trend, peaking at a high UV Index of 7 in May, where sun safety becomes crucial with only 25 minutes of burn time. The summer months of June and July present very high UV levels at 8, enforcing a strict 15-minute exposure limit. As the season wanes, August shows a slight drop to 7, returning to moderate levels in September and October, before the cycle resets in November and December with low indexes of 2 and 1, respectively. This cyclical pattern highlights the importance of monitoring UV levels throughout the year. For more detailed insights, visit Waterloo UV Index.

Maximum UV Index Levels in Waterloo for January

The chart shows the monthly maximum UV Index (UVI) for Waterloo 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 Waterloo typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Waterloo 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 Waterloo

January in Waterloo, Belgium, may not boast the sunniest days, with only 121 hours of sunshine, but it sets the stage for a gradual but significant increase in daylight as the year unfolds. As we transition into February, the sun begins to peek out more frequently, bringing 200 hours of sunny moments. This upward trend continues through the spring months, with March and April registering 266 and 346 hours respectively, while May ushers in a vibrant 394 hours of sunshine, showcasing the delightful awakening of nature. The peak shines in the summer, particularly in July, where Waterloo basks in 406 hours of warm sunlight. As the seasons shift towards autumn, sunshine hours start to decline, but even September's 319 hours remain pleasant. By December, the year closes with 143 hours, reminding us of the year's bright beginnings, encouraging us to look forward to longer, sun-filled days ahead.

Monthly Sunshine Duration in Waterloo: January Highlighted

The January sunshine duration represents the total number of hours Waterloo 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.
JanFebMarAprMayJunJulAugSepOctNovDec121h200h266h346h394h398h406h379h319h240h190h143h
Data source: Waterloo January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Waterloo During January

In Waterloo, Belgium, January stands out as one of the cloudiest months of the year, with a mere 10% chance of sunny weather. This is significantly lower than the subsequent month of February, which sees the likelihood of sun jump to 31%. As winter transitions to spring, the chances of sunny days rise noticeably, with March at 39% and April reaching 49%. This upward trend highlights the gradual shift toward a brighter season, as May maintains a solid 33% likelihood of sunshine. Interestingly, despite a slight dip in summer months, the overall pattern suggests that as the year progresses, residents can look forward to a gradual increase in sunny days, transforming the dreary January blues into the vibrant colors of spring.

Percentage of Sunny Days in January in Waterloo

The chart illustrates the percentage of sunny days in Waterloo 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 Waterloo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec10%31%39%49%33%33%33%29%36%31%24%16%
Data source: Waterloo January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Waterloo in January

As January unfolds in Waterloo, Belgium, the daylight lasts a modest 8 hours, marking the winter's grip on the region. However, a noticeable trend emerges as the days begin to lengthen in February, reaching 10 hours of sunlight. This gradual increase continues into March with 11 hours, paving the way for the longer days of spring. By April, daylight stretches to 13 hours, and in May, residents are rewarded with 15 hours of sunlight, basking in the warming embrace of spring. The peak arrives in June with an impressive 16 hours of daylight, a joyful highlight of the season. Following the zenith, daylight begins its slow descent, as July and August witness 15 and 14 hours, respectively. By September, the daylight dwindles to 12 hours, transitioning into October with 10 hours, and back to the shorter days of late autumn, as November and December both settle at 8 hours again. This cyclical dance of daylight underscores the natural rhythm of seasons in Waterloo, where every month brings its own unique glow.

Average Daylight Hours in Waterloo for January

The chart illustrates the variation in daylight duration in Waterloo throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 30m10h 2m11h 55m13h 50m15h 31m16h 23m15h 55m14h 25m12h 34m10h 39m8h 56m8h 1m
Data source: Waterloo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Waterloo

In January, Waterloo, Belgium, welcomes the New Year with an average wind speed of 4.4 m/s (10 mph), setting the tone for breezy winter days. As the month unfolds, wind speeds slightly increase into February, reaching 4.6 m/s (10 mph), before dipping in March to 4.1 m/s (9 mph). The pattern shifts again in April, where winds are gentler at 3.4 m/s (8 mph), suggesting a transition towards calmer spring weather. While May revives the breezy conditions with a return to 4.4 m/s (10 mph), the summer months bring a noticeable reduction in wind speed, with June averaging 2.8 m/s (6 mph)—the calmest of the year. This trend of tranquility continues into July and August, with wind speeds stabilizing at 3.4 m/s (8 mph). As autumn arrives, a slight resurgence occurs in October with another return to 4.4 m/s (10 mph), before dropping to 3.4 m/s (8 mph) in November and ending the year at 4.2 m/s (9 mph) in December. Overall, January marks the beginning of an interesting interplay of winds, oscillating between brisk and calm as the seasons change.

Average January Wind Speed in Waterloo

The chart displays monthly wind speed patterns in Waterloo, 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/s4.64.13.44.42.83.43.43.04.43.44.2
Data source: Waterloo January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Waterloo Compares to Other Months

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

In January, the weather is characterized by an average temperature of 4°C (39°F), with daytime highs reaching up to 14°C (57°F) and chilly nighttime lows of -7°C (20°F). The month experiences about 65 mm (2.6 inches) of precipitation over 12 days, along with high humidity levels of 91%. In contrast, February sees slightly colder temperatures, with an average of 5°C (42°F) and minimum temperatures plunging to -9°C (17°F). The maximum temperature rises to a mild 19°C (66°F), and precipitation increases marginally to 70 mm (2.7 inches) over the same number of days, accompanied by slightly lower humidity at 89%. For a more detailed insight into February weather, you can check Waterloo weather in February.

In January, the weather in Waterloo is characterized by colder temperatures, with a minimum of -7°C (20°F) and an average of 4°C (39°F), peaking at a maximum of 14°C (57°F). The month experiences around 65 mm (2.6 in) of precipitation over 12 days, coupled with high humidity levels at 91%. In contrast, March brings a noticeable warming trend, with minimum temperatures dropping slightly to -9°C (17°F), and an average rising to 7°C (45°F), while maximum temperatures can reach a pleasant 23°C (74°F). Precipitation increases slightly to 71 mm (2.8 in) over 14 days, and humidity remains relatively high at 87%. This shift from January to March highlights a transition from winter’s chill to early spring warmth, making March a more favorable time for outdoor activities. For more details, you can refer to Waterloo weather in March.

January and April present a stark contrast in weather patterns. In January, temperatures can plunge to a minimum of -7°C (20°F), averaging around 4°C (39°F) and reaching a maximum of 14°C (57°F). The month is characterized by significant precipitation, totaling 65 mm (2.6 in) over approximately 12 days, alongside high humidity levels at 91%. In contrast, April experiences milder conditions, with minimum temperatures of -4°C (26°F), an average of 10°C (50°F), and a peak of 27°C (81°F). Precipitation decreases to 36 mm (1.4 in) over just 8 days, and humidity slightly dips to 85%. This shift in weather illustrates the transition from the cold depths of winter to the warming embrace of spring. For a more detailed overview, check out Waterloo weather in April.

In January, the weather in Waterloo experiences much colder temperatures, with a minimum of -7°C (20°F) and an average of 4°C (39°F). The month is characterized by frequent precipitation, occurring over 12 days, and high humidity at 91%. In contrast, May brings a significant warming trend, with minimum temperatures rising to 0°C (33°F) and average highs reaching 31°C (87°F). Although May sees slightly less precipitation (60 mm or 2.4 in) across 13 days, the humidity decreases to 82%, contributing to a more pleasant atmosphere. For more details on the weather patterns during this month, you can check Waterloo weather in May.

In January, the weather is quite chilly, with temperatures ranging from a minimum of -7°C (20°F) to an average of 4°C (39°F) and a maximum of 14°C (57°F). The month sees around 65 mm (2.6 in) of precipitation over 12 days, and high humidity levels at 91% contribute to the cold feeling. Conversely, June brings a significant warm-up, with temperatures typically ranging from a minimum of 7°C (45°F) to an average of 18°C (65°F) and peaking at 33°C (91°F). Although June experiences slightly more precipitation at 72 mm (2.8 in) over 11 days, the humidity is lower at 82%, making the warmer months feel more comfortable. For more specific details, you can check out the Waterloo weather in June.

January and July present stark contrasts in weather. In January, temperatures range from a chilly minimum of -7°C (20°F) to a maximum of 14°C (57°F), with an average of 4°C (39°F). The month is also characterized by high humidity at 91% and around 65 mm (2.6 in) of precipitation over 12 days, creating a damp, cold atmosphere. Conversely, July experiences significantly warmer conditions, with temperatures ranging from 8°C (46°F) to a sizzling 39°C (102°F) and an average of 19°C (66°F). While July sees slightly more precipitation at 74 mm (2.9 in), it occurs over just 11 days, along with a notably lower humidity of 80%. For more details on July weather specifically, you can check out Waterloo weather in July.

In January, temperatures in Waterloo can be quite chilly, with a maximum reaching only 14°C (57°F) and a low dipping down to -7°C (20°F). This month also experiences high humidity levels at 91% and roughly 65 mm (2.6 in) of precipitation over about 12 days, making it feel even colder.

In contrast, August brings much warmer weather, featuring a minimum temperature of 7°C (46°F) and a high of 36°C (97°F), with an average temperature around 19°C (66°F). Although August has slightly more precipitation at 84 mm (3.3 in) over 14 days, the humidity decreases to 76%, providing a more comfortable experience compared to the winter months. For more details, you can check Waterloo weather in August.

January and September showcase contrasting weather patterns. In January, temperatures can dip as low as -7°C (20°F) and only average around 4°C (39°F), while September enjoys milder conditions with a minimum of 4°C (39°F) and an average of 15°C (60°F). The maximum temperature in September can reach a warm 33°C (91°F), considerably higher than January’s peak of 14°C (57°F). Both months see precipitation, but January has slightly more, with 65 mm (2.6 in) over 12 days compared to September’s 58 mm (2.3 in) over 10 days. Additionally, humidity levels are higher in January at 91%, compared to September's 82%. For more details, visit Waterloo weather in September.

January weather is characterized by much colder temperatures, with a minimum of -7°C (20°F) and an average of only 4°C (39°F). In contrast, October enjoys milder conditions, including a minimum of 1°C (35°F) and an average temperature of 12°C (54°F). Precipitation levels are relatively similar, with January receiving 65 mm (2.6 in) over about 12 days, while October sees slightly higher precipitation at 78 mm (3.1 in) across 13 days. Despite the shift in temperatures, both months exhibit high humidity, with January at 91% and October slightly lower at 89%. For more specific details about October weather, you can visit Waterloo weather in October.

When comparing the weather in January and November, notable differences emerge in temperature and precipitation. January experiences colder temperatures, with minimums dropping to -7°C (20°F) and average highs peaking at 14°C (57°F), while November offers milder conditions, featuring minimums of -3°C (28°F) and average highs reaching 18°C (65°F). Precipitation levels are somewhat similar, with January receiving 65 mm (2.6 in) over 12 days and November slightly less at 57 mm (2.3 in) over 11 days. Humidity remains high in both months, with January at 91% and November just slightly higher at 92%. For a closer look at November weather specifics, check out Waterloo weather in November.

In January, temperatures tend to be slightly cooler than in December, with average highs reaching 14°C (57°F) compared to December's maximum of 15°C (59°F). Both months experience low minimum temperatures, but January can drop to a chilly -7°C (20°F) versus December's milder -4°C (24°F). Precipitation is also notably different; January sees 65 mm (2.6 in) over 12 days, while December receives a greater amount of 92 mm (3.6 in) spread over 17 days. Additionally, humidity remains high in both months, slightly increasing from January's 91% to December's 92%. For more detailed insights, check out Waterloo weather in December.

Compare Waterloo's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Waterloo

As January graces Waterloo, the landscape transforms under the chilly embrace of winter, distinguishing it from the milder months that flit around it. With average temperatures hovering around a brisk 4°C, and the air often tinged with a high humidity of 91%, this month's coolness is felt deeply. Occasional precipitation punctuates the frost-laden days, with about 12 days of rain contributing to a total of 65 mm, making January notably wetter than drier months that bookend it. As the last whispers of winter linger, this month offers a uniquely serene atmosphere, inviting reflections on the captivating intricacies of the season. For more insights on how Waterloo's climate unfolds throughout the year, visit Waterloo Climate.