Last updated: August 27, 2025
January in Thun, Switzerland showcases a diverse range of winter weather conditions, with maximum temperatures reaching up to 11°C (53°F) and plummeting to a brisk -19°C (-2°F) at times. On average, the temperature hovers around -2°C (29°F), creating a chilly atmosphere for residents and visitors alike. Throughout the month, Thun experiences considerable precipitation, totaling 113 mm (4.5 in) over 11 days, contributing to a notably high humidity level of 91%. This combination of cold, moisture-laden air and frequent rainfall underscores the dynamic character of January, setting a picturesque winter scene in this beautiful Swiss town.
In January, Thun, Switzerland, embraces the chill of winter with temperatures that range from a brisk -19°C (-2°F) at night to a milder 11°C (53°F) during the day. The month showcases an average temperature of -2°C (29°F), reflecting the depths of winter where visitors can expect frosty mornings and crisp afternoons. As the month progresses towards February, the cold persists but ever so slightly softens, evidenced by an increase in average temperatures, suggesting the slow transition to more temperate weather. The peaks and valleys of January's climate herald the gradual ascent into milder months, making it a pivotal time for outdoor winter sports and scenic snow-covered landscapes.
In Thun, Switzerland, January brings an average precipitation of 113 mm (4.5 in) over 11 rainy days, setting the tone for a wet winter season. This month typically marks a transition from the heavier rainfalls of December, which can reach 169 mm, to the slightly drier months ahead, such as April with 88 mm. As the year progresses into spring, precipitation often begins to fluctuate, peaking in May at 182 mm during the peak of the wet season. The trend shows that while January’s rainfall is significant, it paves the way for even wetter months as the landscape awakens. This pattern of varying precipitation highlights the dynamic weather system of the region, where each month brings its unique character to Thun's climate.
In January, the city of Thun, Switzerland, experiences its peak humidity at a notable 91%, setting the tone for a winter characterized by moist air. This high humidity gradually decreases as the seasons change, dipping to 89% in February and further down to 87% in March. By the time April arrives, the humidity stabilizes around 84%, marking the transition to drier spring months. As summer approaches, humidity levels hover around 80-82%, offering a slightly more comfortable atmosphere. However, as autumn unfolds, humidity levels begin to climb again, reaching 89% by October and returning to 91% in December. This cyclical trend reveals Thun's consistent humid climate, providing a unique backdrop for its picturesque surroundings throughout the year.
In January, Thun experiences a UV Index of 2, indicating a low exposure category with a burn time of 45 minutes. This gentle start to the year sets the stage for rising UV levels, as the index climbs to 4 in February, shifting into the moderate category, where sun protection becomes more essential with a reduced burn time of 30 minutes. By March and April, the index reaches high levels of 6 and 7, respectively, cutting burn times down to just 25 minutes. As spring gives way to summer, the UV index peaks in May and June with values of 9 and 10, where sun exposure becomes critical and the burn time drops to a mere 15 minutes. This trend continues into July and August, emphasizing the need for protective measures during these high UV months. As temperatures cool in September and October, the index returns to high and moderate levels before settling back to low again in December, offering a notable shift in sun safety awareness throughout the year. For more detailed information, check out the Thun UV Index.
UV Risk Categories
In January, Thun, Switzerland, experiences a modest 169 hours of sunshine, setting the stage for brighter days ahead. As winter progresses into February, the sun makes a welcome return, with sunshine hours soaring to 229, hinting at the lengthening days. By March, the promise of spring shines through, contributing 299 hours of sunshine, while April and May continue this upward trend with a remarkable 356 and 361 hours respectively, invigorating the landscape and spirit alike. June follows suit, reaching 386 hours, marking the peak of sunshine before summer hits. However, as temperatures rise, the sunshine slightly dips in July to 416 hours, then gradually declines in August with 384 hours. The onset of autumn brings a gentler pace, with 322 hours in September and further reductions in the following months, ultimately leading to 195 hours by December. This gradual ebb and flow of sunlight throughout the year beautifully reflects the transition of seasons in this charming Swiss town.
In Thun, Switzerland, January greets residents and visitors with a modest 19% chance of sunny weather, making it one of the cloudier months. As winter transitions into spring, the likelihood of sun increases significantly; February jumps to 38%, followed by March with 46%. This upward trend continues, peaking in April at nearly 50%, before gradually fluctuating in the following months. The summer months, while not having the highest percentages, maintain a respectable range of 34% to 40%, indicating that clearer skies become more prevalent as the year progresses. Overall, sunny days are scarce in January, but the promise of brighter weather looms on the horizon as the seasons change.
In January, Thun, Switzerland, experiences a modest 8 hours of daylight, setting the stage for the gradual lengthening of days as winter gives way to spring. By February, daylight increases to 10 hours, paving the way for brighter and more vibrant months ahead. March further fuels this trend with 11 hours of sunshine, while April welcomes 13 hours, inviting the blossoming of nature. As summer approaches in May, daylight reaches 15 hours, a peak that continues through June and July, granting residents ample time to enjoy the great outdoors. However, as August rolls in, daylight starts to wane slightly, with 14 hours still providing plenty of sun. The rhythm of shorter days continues into autumn, with September dipping to 12 hours and October further reducing to 10 hours. By November and December, daylight shrinks back to 9 and 8 hours, respectively, mirroring the shorter days of January, creating a cyclical dance of light that characterizes Thun’s seasonal charm.
In January in Thun, Switzerland, the average wind speed settles at a gentle 1.8 m/s (4 mph), reflecting the calmness that often accompanies winter's embrace. As the seasons transition into February, there’s a slight uptick to 1.9 m/s, maintaining that serene ambiance. Interestingly, March witnesses a small dip to 1.7 m/s, but the winds stay consistently mild throughout the spring months, hovering around 1.8 m/s. This trend continues until June, when the winds soften to 1.4 m/s, offering a tranquil respite during summer. While July and August record similar gentle breezes, the winds pick up slightly again in the autumn months, peaking at 1.9 m/s in December. Overall, Thun experiences a stable wind pattern, characterized by mild speeds that complement its picturesque winter landscape.
Weather in Thun varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Thun, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February present a notable transition in weather conditions. January, with an average temperature of -2°C (29°F), often experiences colder days, reaching a minimum of -19°C (-2°F) and sometimes peaking at 11°C (53°F). The month also sees significant precipitation, totaling 113 mm (4.5 in) over 11 days, alongside high humidity levels at 91%. In contrast, February offers slightly milder temperatures, averaging 1°C (34°F), with a minimum of -16°C (3°F) and a maximum reaching 16°C (60°F). Precipitation decreases slightly to 99 mm (3.9 in) over the same number of rainy days, with humidity lowering to 89%. For more detailed insights into February weather, check out Thun weather in February.
In January, temperatures can be quite frigid, with minimums reaching -19°C (-2°F) and average highs around -2°C (29°F), while precipitation amounts to 113 mm (4.5 in) over 11 days. The high humidity of 91% adds to the chill in the air. In contrast, March typically sees slightly milder conditions, with minimum temperatures dropping to -21°C (-6°F) but an average maximum of 17°C (64°F) providing a noticeable contrast. Although March records slightly more precipitation at 121 mm (4.7 in) across 15 days, the humidity is lower at 87%. For a detailed look at March weather conditions, you can visit Thun weather in March.
In January, the weather is quite frigid, with temperatures ranging from a chilling -19°C (-2°F) to a maximum of 11°C (53°F), averaging around -2°C (29°F). The month also sees significant precipitation, totaling 113 mm (4.5 in) over 11 days, accompanied by high humidity levels of 91%.
In contrast, April brings a noticeable warming trend, with temperatures ranging from a minimum of -11°C (12°F) to a pleasant maximum of 22°C (71°F), and an average temperature of 7°C (45°F). While precipitation is lower at 88 mm (3.5 in) over the same number of days, humidity decreases slightly to 84%.
For a closer look at the weather specifics in April, you can visit Thun weather in April.
In January, temperatures can plummet to a minimum of -19°C (-2°F), with an average of -2°C (29°F), and a maximum reaching only 11°C (53°F). This month also sees significant precipitation, averaging 113 mm (4.5 in) over 11 days, along with high humidity at 91%. In stark contrast, May brings warmer weather with minimum temperatures of -5°C (23°F) and averages around 11°C (51°F), peaking at 28°C (82°F). Precipitation increases to 182 mm (7.2 in) over 19 days, but the humidity drops to a more comfortable 80%. For more detailed information on what to expect, check out Thun weather in May.
In January, the weather is characterized by very cold temperatures, ranging from a minimum of -19°C (-2°F) to a maximum of 11°C (53°F), with an average temperature of -2°C (29°F). This month sees significant precipitation, totaling 113 mm (4.5 in) over 11 days, and high humidity at 91%.
In stark contrast, June brings much warmer temperatures, with a minimum of 3°C (37°F), an average of 16°C (60°F), and a maximum of 31°C (88°F). Although June experiences more precipitation at 197 mm (7.8 in) over 17 days, the humidity is slightly lower at 82%. These differences highlight the seasonal shift from the frigid conditions of January to the warm, sometimes humid days of June. For more details on June’s weather specifics, you can check Thun weather in June.
January weather is characterized by frigid temperatures, with averages hovering around -2°C (29°F) and occasional highs reaching 11°C (53°F). The month experiences significant precipitation, totaling 113 mm (4.5 in) over about 11 days, along with a high humidity level of 91%. In contrast, July brings much warmer conditions, with average temperatures climbing to 17°C (63°F) and maximums soaring to 31°C (89°F). This mid-summer month sees even more rainfall, with 197 mm (7.8 in) spread across 16 days, although humidity dips slightly to 82%. For a detailed look at July’s climate in Thun, check out Thun weather in July.
In January, the weather is typically cold and crisp, with temperatures ranging from a frigid minimum of -19°C (-2°F) to a maximum of 11°C (53°F), and an average of -2°C (29°F). This month experiences significant precipitation, totaling 113 mm (4.5 in) over approximately 11 days, accompanied by high humidity levels at 91%. In contrast, August brings much warmer conditions with temperatures ranging from a minimum of 6°C (43°F) to a pleasant maximum of 30°C (86°F), averaging around 17°C (62°F). The summer month also sees increased rainfall, with 176 mm (6.9 in) falling over about 15 days, but the humidity is lower at 77%. For more details on the weather during this month, you can refer to Thun weather in August.
January and September showcase contrasting weather patterns. In January, temperatures can plummet to a minimum of -19°C (-2°F), with an average of -2°C (29°F) and a maximum reaching only 11°C (53°F). The month is characterized by high humidity at 91% and considerable precipitation of 113 mm (4.5 in) over approximately 11 days. In stark contrast, September experiences milder temperatures, with a minimum of 1°C (34°F) and an average of 13°C (55°F), while the maximum can rise to a pleasant 25°C (78°F). The precipitation in September is similar, totaling 105 mm (4.1 in) over about 13 days, but the humidity is lower at 81%. For those looking to explore typical weather conditions, you can find more details here: Thun weather in September.
In January, the weather is significantly colder, with temperatures ranging from a frigid -19°C (-2°F) to a mild 11°C (53°F) and an average of -2°C (29°F). The month sees high levels of precipitation at 113 mm (4.5 in) over 11 days, paired with a humidity level of 91%, contributing to a damp and chilly atmosphere. In contrast, October experiences milder temperatures, with a minimum of -2°C (29°F), an average of 8°C (48°F), and a maximum of 21°C (71°F). It also has slightly more precipitation at 122 mm (4.8 in) over 13 days and a humidity level of 89%. For more detailed insights about conditions during this month, check out Thun weather in October.
In January, the weather is significantly colder, with temperatures ranging from a minimum of -19°C (-2°F) to a maximum of 11°C (53°F), while November sees milder temperatures that fluctuate between -9°C (17°F) and a maximum of 19°C (67°F). January also experiences higher average precipitation at 113 mm (4.5 in) over 11 days, compared to November's 94 mm (3.7 in) spread over 13 days. Even though both months demonstrate similar humidity levels, with January at 91% and November at 89%, November's relatively warmer temperatures make it feel less severe. For a closer look at the weather conditions in November, check out Thun weather in November.
January features colder temperatures compared to December, with minimums plunging to -19°C (-2°F) and an average of -2°C (29°F), while December sees slightly milder conditions with a minimum of -12°C (11°F) and an average of 0°C (32°F). Precipitation is also notably lower in January, amounting to 113 mm (4.5 in) over 11 days, compared to December's 169 mm (6.7 in) across 17 days. Both months experience high humidity levels of 91%, but January's chill is more pronounced, making it feel significantly colder. For more details, you can check out Thun weather in December.
January in Thun offers a unique blend of winter chill and damp conditions, setting it apart from the milder months of the year. With an average temperature hovering at a frosty -2°C, it provides a stark contrast to the more temperate seasons, while the notable humidity of 91% contributes to a crisp atmosphere that can feel quite biting. The 113 mm of precipitation over 11 days adds to the wintry ambiance, reminding visitors of the season's stark beauty. Those venturing to Thun during this month will surely experience its distinctive character and should prepare for the cold and wet conditions that January brings. For a deeper understanding of what to expect throughout the year, be sure to explore Thun Climate.