January Weather in Wetzlar, Germany

Last updated: February 26, 2025

January in Wetzlar, Germany presents a brisk and chilly climate, characterized by average temperatures hovering around 2°C (36°F), with maximums reaching 12°C (54°F) and minimums dipping as low as -11°C (12°F). The month witnesses a significant precipitation total of 66 mm (2.6 in) across approximately 12 days, contributing to a notably high humidity level of 92%. As winter's grasp tightens, locals can expect a blend of frosty weather and damp days, making it a quintessential month for those who appreciate the serene, crisp beauty of German winters.

January Temperature in Wetzlar

In Wetzlar, Germany, January brings a crisp chill, with temperatures typically ranging from a biting -11°C (12°F) at night to a more bearable 12°C (54°F) during the day. This month serves as a stark reminder of winter, showcasing an average temperature of just 2°C (36°F). As the month progresses, a gradual shift is noticeable, hinting at the coming warmth of February, where the minimum dips to -13°C (9°F) but the potential for daytime highs reaching 19°C (66°F) introduces a touch of spring-like variability. Overall, January lays the foundation for the season, contrasting the frigid nights with the promise of warmer days ahead, inviting outdoor enthusiasts to embrace the chilly landscapes before the thaw begins.

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

The chart illustrates January temperature patterns in Wetzlar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec353842495565666659514238
Data source: Temperature data for Wetzlar 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 Wetzlar

In Wetzlar, Germany, January marks the beginning of the year with a moderate precipitation level of 66 mm (2.6 in), spread over 12 rainy days. This sets a trend of wet winter months, as December typically sees an even higher precipitation of 99 mm (3.9 in), suggesting a pattern of increased rainfall as the year ends. As we move into February, precipitation decreases slightly to 59 mm (2.3 in), yet the rainy days remain consistent. Interestingly, March brings a rebound with 72 mm (2.8 in), hinting at the transition towards spring. This cyclical pattern of rainfall highlights Wetzlar's varied climatic conditions, balancing between wet winters and the drier spring months ahead.

January Precipitation Trends in Wetzlar

The chart displays monthly precipitation patterns in Wetzlar, 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.
JanFebMarAprMayJunJulAugSepOctNovDec665972387772727246584899
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Wetzlar

In January, Wetzlar, Germany, experiences a high humidity level of 92%, setting a pattern for the winter months. This peak humidity slightly dips to 90% in February, yet remains notably high. As spring approaches, there’s a gradual decrease to 87% in March and 83% in April, indicating a shift toward drier conditions. However, this decrease continues as summer arrives, with humidity dropping to a comfortable 74% during June and July, before climbing ever so slightly to 75% in August. Interestingly, as autumn unfolds, humidity rises again, reaching 82% in September and climbing back to 88% by October. By November, moisture levels stabilize at 90%, before closing the year with another 92% in December. This cyclical pattern highlights Wetzlar's transition from high humidity in winter to relatively drier summer months, only to experience increased dampness as it heads into winter once more.

January Average Humidity in Wetzlar

This chart illustrates the average monthly humidity levels in Wetzlar, with January's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how January's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%87%83%76%74%74%75%82%88%91%92%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Wetzlar

In Wetzlar, Germany, the January UV Index registers at a low 2, indicating minimal risk of harm from unprotected sun exposure. Residents and visitors can enjoy approximately 45 minutes outdoors before a burn becomes a concern, which encourages leisure activities without the need for heavy sun protection. As the months progress, UV levels gradually increase; February maintains the same low level, while March and April see a shift to moderate exposure with indices of 4 and 5 respectively, prompting a reduction in burn time to 30 minutes. This trend continues through the year, with summer months peaking at a very high 8 in both June and July, necessitating closer attention to sun safety. For a detailed look at the UV Index trends throughout the year, visit Wetzlar UV Index.

Maximum UV Index Levels in Wetzlar for January

The chart shows the monthly maximum UV Index (UVI) for Wetzlar 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.
JanFebMarAprMayJunJulAugSepOctNovDec224578875421
Data source: Wetzlar 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 Wetzlar

In the charming city of Wetzlar, Germany, January greets its residents with a modest 101 hours of sunshine, setting a tranquil tone for the new year. As winter transitions into spring, daylight begins to blossom, with February enjoying 198 hours, a promising increase that hints at brighter days ahead. March furthers this trend, boasting 265 hours of sunshine as the sun starts to assert its presence. By the time April rolls around, Wetzlar basks in 343 hours, and this upward trajectory continues, peaking in July with the year’s maximum of 412 hours. The warm embrace of summer starts to wane in August, but 384 hours still offer plenty of radiant days. As autumn descends, the sunshine gradually diminishes, with 320 hours in September and slipping further to 112 hours by December. This yearly cycle of sunlight reflects Wetzlar's vibrant seasons, where each month paints a unique portrait of warmth and light, culminating in a captivating interplay between daylight and the evolving landscape.

Monthly Sunshine Duration in Wetzlar: January Highlighted

The January sunshine duration represents the total number of hours Wetzlar 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.
JanFebMarAprMayJunJulAugSepOctNovDec101h198h265h343h385h394h412h384h320h236h166h112h
Data source: Wetzlar January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Wetzlar During January

In Wetzlar, Germany, the likelihood of sunny weather in January is notably low, with only a 10% chance of sunshine gracing the skies. This sets the stage for a gradual increase in brightness as winter wanes; by February, the chance of sun climbs to 31%, suggesting a shift toward more cheerful days. As spring approaches, March and April show promising trends, boasting 42% and 41% sunlight probabilities, respectively. However, the sunny outlook dwindles again during the late spring and summer months, with May and July seeing lower percentages around 29%. In contrast, the year wraps up with another dip in sun chances during the fall and winter, emphasizing that January holds onto its reputation as one of Wetzlar's greyest months.

Percentage of Sunny Days in January in Wetzlar

The chart illustrates the percentage of sunny days in Wetzlar 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 Wetzlar experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec10%31%42%41%29%31%30%29%38%25%15%12%
Data source: Wetzlar January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Wetzlar in January

In Wetzlar, Germany, January marks a turning point in daylight duration, offering only 8 hours of light as winter grips the landscape. This invitation to cozy up indoors gradually gives way to spring's promise, with daylight expanding to 10 hours in February and reaching 11 hours by March. As nature awakens, April delights with 13 hours of sunlight, and May shines with even more, basking in 15 hours of daylight. June is the peak of brightness, boasting an impressive 16 hours, enabling long, vibrant days filled with outdoor activities. As summer fades, daylight begins its gentle decline, first to 15 hours in July, then tapering to 14 hours in August, and gradually dropping to 12 hours by September. By the time October arrives, the daylight dwindles back to 10 hours, ultimately settling at 8 hours again in both November and December. This cyclical dance of daylight reflects the enchanting rhythm of the seasons, inviting residents and visitors alike to embrace the magic of each passing month.

Average Daylight Hours in Wetzlar for January

The chart illustrates the variation in daylight duration in Wetzlar throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 33m10h 3m11h 55m13h 49m15h 29m16h 20m15h 53m14h 24m12h 33m10h 40m8h 58m8h 4m
Data source: Wetzlar daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Wetzlar

In Wetzlar, Germany, January sets the stage for a brisk winter, with an average wind speed of 3.3 m/s (7 mph). This slightly elevated wind speed compared to the following month, February, which drops to 3.0 m/s, suggests a January chill that gives way to a more subdued breeze as spring approaches. As we transition into the milder months, wind speeds fluctuate, peaking again in May at 3.4 m/s (8 mph) before settling down into the summer heat. Interestingly, the annual trend reveals that winter months generally exhibit higher wind speeds, while the summer months see a decrease, showcasing the dynamic nature of Wetzlar's climate.

Average January Wind Speed in Wetzlar

The chart displays monthly wind speed patterns in Wetzlar, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.3 m/s3.03.12.83.42.32.52.72.12.92.52.9
Data source: Wetzlar January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Wetzlar Compares to Other Months

The weather in Wetzlar changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Wetzlar and find detailed weather information for every month.

In January, the weather tends to be quite cold, with temperatures ranging from a minimum of -11°C (12°F) to an average of 2°C (36°F) and peaking at 12°C (54°F). The month also sees considerable precipitation, totaling 66 mm (2.6 in) over approximately 12 days, while humidity levels remain high at 92%.

In contrast, February brings slightly colder minimum temperatures, often dipping to -13°C (9°F), but it features a marginally warmer average of 3°C (38°F), with highs reaching up to 19°C (66°F). Precipitation decreases to 59 mm (2.3 in) across about 11 days, and humidity is slightly lower at 90%.

For a detailed look at February's climate in Wetzlar, check out Wetzlar weather in February.

In January, the weather is characterized by colder temperatures, with a minimum of -11°C (12°F) and an average of 2°C (36°F), reaching a maximum of 12°C (54°F). The month also sees significant humidity at 92% and experiences precipitation over 12 days, totaling 66 mm (2.6 in). In contrast, March brings a noticeable warming trend, starting with a minimum temperature of -12°C (11°F) but averaging higher at 6°C (43°F) and peaking at a comfortable 21°C (71°F). While March experiences slightly more precipitation at 72 mm (2.8 in) over 13 days, the humidity remains lower at 87%. For more detailed information, check out Wetzlar weather in March.

January and April in Wetzlar present a stark contrast in weather conditions. In January, temperatures are much colder, ranging from a minimum of -11°C (12°F) to a maximum of 12°C (54°F), with an average temperature of just 2°C (36°F). The month sees significant precipitation of 66 mm (2.6 in) over 12 days, along with high humidity levels at 92%. In contrast, April brings a more temperate climate, with temperatures fluctuating between a minimum of -4°C (26°F) and a maximum of 26°C (79°F), and an average of 9°C (49°F). Precipitation decreases to 38 mm (1.5 in) over only 7 days, while humidity also drops to 83%. For a more detailed outlook, check Wetzlar weather in April.

January and May showcase a striking contrast in weather patterns. January experiences frigid temperatures, with a minimum of -11°C (12°F) and an average of just 2°C (36°F), while May brings a significant warming trend with temperatures ranging from a minimum of -1°C (31°F) to an average of 13°C (56°F) and heating up to a maximum of 31°C (88°F). Although January has a similar number of precipitation days, it records 66 mm (2.6 in) of snowfall or rain compared to May's 77 mm (3.0 in), indicating that while both months can be wet, May often feels much warmer and more pleasant. The humidity in January is quite high at 92%, while May presents a more comfortable 76%. For those interested in the specifics of May’s climate, you can find more details at Wetzlar weather in May.

January and June present a stark contrast in weather conditions. In January, temperatures can dip as low as -11°C (12°F), with an average of 2°C (36°F) and a maximum of 12°C (54°F), creating a chilly environment characterized by high humidity at 92%. Precipitation occurs on about 12 days, totaling 66 mm (2.6 in). In comparison, June features a much milder climate, with minimum temperatures around 6°C (44°F), average highs of 18°C (65°F), and maximums reaching a warm 33°C (92°F). Despite a slight increase in precipitation to 72 mm (2.8 in) over 11 days, the humidity drops to a more comfortable 74%. For a closer look at June weather, you can visit Wetzlar weather in June.

In January, Wetzlar experiences significantly colder temperatures, with lows reaching -11°C (12°F) and an average temperature of around 2°C (36°F). The month is characterized by high humidity at 92% and consistent precipitation, totaling 66 mm (2.6 in) over 12 days. In contrast, July brings much warmer weather, with minimum temperatures of 7°C (45°F) and an average of 19°C (66°F), occasionally peaking at a scorching 37°C (100°F). Despite July's higher total precipitation of 72 mm (2.8 in) over just 11 days, the humidity is notably lower at 74%. For more insights on Wetzlar's warm summer conditions, you can check Wetzlar weather in July.

January and August present a stark contrast in weather conditions. In January, temperatures can plunge as low as -11°C (12°F) with an average of 2°C (36°F) and a maximum of 12°C (54°F), creating a chilly atmosphere complemented by high humidity levels of 92%. On the other hand, August brings a much warmer climate, with minimum temperatures around 7°C (45°F), an average of 19°C (67°F), and soaring to a maximum of 34°C (94°F). While January sees around 66 mm (2.6 in) of precipitation over 12 days, August features slightly higher precipitation at 72 mm (2.8 in), across 13 days, though the humidity drops to a more comfortable 75%. For more details on August weather specifically, check out Wetzlar weather in August.

January and September present contrasting weather conditions. In January, temperatures can plummet as low as -11°C (12°F), with an average around 2°C (36°F) and a maximum of 12°C (54°F). The month is characterized by high humidity at 92% and considerable precipitation, averaging 66 mm (2.6 in) over 12 days. In stark contrast, September enjoys milder temperatures, with a minimum of 3°C (37°F), an average of 15°C (59°F), and a maximum that can reach 32°C (90°F). This month experiences less precipitation, averaging 46 mm (1.8 in) over just 8 days, and the humidity decreases to 82%. For more specifics on September in Wetzlar, you can check Wetzlar weather in September.

January and October showcase contrasting weather patterns. In January, temperatures can plunge to a minimum of -11°C (12°F) and rarely exceed 12°C (54°F), with an average of just 2°C (36°F). This chill is accompanied by high humidity at 92% and precipitation over 12 days, totaling 66 mm (2.6 in). Conversely, October brings milder conditions, with temperatures ranging from a minimum of -1°C (31°F) to a pleasant maximum of 25°C (78°F) and an average of 11°C (51°F). The month sees slightly less rainfall at 58 mm (2.3 in), also falling over 12 days, and a lower humidity level of 88%. For a closer look at October’s weather dynamics, check out Wetzlar weather in October.

January and November present notably different weather patterns. In January, temperatures plunge to a minimum of -11°C (12°F), with an average of 2°C (36°F) and a maximum of 12°C (54°F), making it the coldest month of the year. Precipitation is relatively high at 66 mm (2.6 in) over approximately 12 days, accompanied by high humidity at 92%. In contrast, November experiences milder conditions, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 20°C (68°F) and an average of 5°C (42°F). Precipitation is lower at 48 mm (1.9 in) over the same number of days and humidity is slightly lower at 90%. For more details on November conditions, you can check Wetzlar weather in November.

January and December exhibit similar cold temperatures, with January experiencing slightly lower averages. In January, the minimum temperature dips to -11°C (12°F), while December's minimum is slightly milder at -7°C (20°F). Both months maintain high humidity levels at 92%. However, December sees more precipitation, totaling 99 mm (3.9 in) over 17 days compared to January’s 66 mm (2.6 in) across 12 days. For more detailed insights on December weather, check out Wetzlar weather in December.

Compare Wetzlar's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Wetzlar

January in Wetzlar is a month of contrasts, marked by its chilly temperatures and high humidity levels that set it apart from other months of the year. With a maximum of 12°C and a biting minimum of -11°C, the cold is palpable, inviting warmth and coziness. This month also brings significant precipitation, averaging around 66 mm across 12 days, making it one of the wetter times in the annual cycle. Compared to the milder, drier conditions of spring and summer, January can feel quite isolating, yet it possesses a unique charm with its crisp air and serene winter landscapes. For a deeper look at how January fits into Wetzlar's broader weather patterns, visit Wetzlar Climate.