Last updated: August 27, 2025
Experience the chill of January in Porrentruy, Switzerland where temperatures exhibit a significant range from a brisk maximum of 14°C (58°F) to a bone-chilling minimum of -13°C (8°F). On average, residents and visitors alike can expect a cool 1°C (34°F), enveloped in a cozy blanket of 91% humidity. January in Porrentruy also brings 113 mm (4.4 in) of precipitation over 13 days, suggesting frequent opportunities for engaging with the frosty landscape. Whether you’re exploring the winter scenery or warming up with a hot beverage, this month offers a unique experience of Swiss winter charm.
January in Porrentruy, Switzerland, is a month of crisp winter air and chilly temperatures, characterized by a significant range from -13°C (8°F) at its coldest to a comfortable 14°C (58°F) at the peak of the day. The average temperature hovers around 1°C (34°F), creating an inviting atmosphere for those who appreciate winter's beauty. As the month progresses, there's a noticeable shift towards milder weather, with February bringing slightly warmer days, hinting at the gradual transition to spring. This trend of increasing temperatures continues into March, where daytime highs can reach 21°C (70°F). The overall pattern suggests that while January embraces the full embrace of winter, it also lays the groundwork for the gentle thaw that follows, making way for the blooms of spring.
In January, Porrentruy experiences a moderate level of precipitation, with an average of 113 mm (4.4 in) spread over 13 days. This positions January as a month of considerable rainfall, setting a tone for the wetter winter months that follow. Notably, as we transition into the year, December tends to be exceptionally rainy, recording 157 mm (6.2 in), while the spring months start to show a decline in precipitation levels. The gradual shift towards drier conditions is evident in April and May, where rainfall dips to 63 mm (2.5 in) and then climbs to 144 mm (5.7 in), indicating a complex interplay between seasonal changes and local weather patterns. Overall, January holds a significant place in the climatological narrative of Porrentruy, bridging the typically wet winters with the blossoming spring ahead.
In Porrentruy, Switzerland, January is marked by its notably high humidity of 91%, establishing a damp start to the year. This trend of elevated moisture continues into February, slightly tapering to 89%, before gradually declining through the spring months, with April reaching 84%. By May, humidity levels drop to 80%, the lowest of the first half of the year, creating a refreshing contrast to the preceding winter months. As summer approaches, humidity levels stabilize around 82% in both June and July, and further ease to 77% in August. However, as autumn settles in, humidity makes a comeback, returning to 89% in both October and November, and once again reaches 91% by December, mirroring January’s conditions. Overall, this cyclical trend suggests a rhythmic pattern of high humidity during the colder months and a gradual decrease into the warmth of summer, only to rebound as the seasons shift once more.
In January, Porrentruy experiences a low UV Index of 2, indicating minimal risk for harm from unprotected sun exposure, with a burn time of about 45 minutes. As winter progresses into February, the UV Index rises to 3, marking a transition to a moderate exposure category where the burn time decreases to 30 minutes. This gradual increase continues into March, reaching an Index of 5 while maintaining moderate exposure, which highlights the need for sun protection as spring approaches. The onset of April brings a notable jump to a high UV Index of 6, further reducing safe sun exposure time to just 25 minutes. By May and June, the Index escalates to 8 and 9, respectively, signifying very high exposure levels, where even brief sun exposure can lead to burns in just 15 minutes. The trend showcases a significant seasonal shift in UV radiation as summer peaks in July and August, before tapering down in September to 6 and gradually descending through the fall months into January’s low levels. Staying informed is essential for enjoying the sun safely; learn more about it in Porrentruy UV Index.
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In January, Porrentruy, Switzerland experiences a modest 134 hours of sunshine, marking the beginning of the year with a gentle embrace of light. As winter transitions into spring, February sees a delightful increase to 210 hours, hinting at the budding warmth to come. The sunshine continues to bloom in March with 282 hours, energizing the landscape as nature awakens. This upward trend reaches its peak in the summer months, with July basking in an impressive 416 hours of brilliance, showcasing Porrentruy's vibrant outdoor charm. However, as autumn descends, the sunshine begins to wane, with October bringing 264 hours and a gradual decline leading into the dimmer months of November and December. Overall, the sunshine pattern reflects the pulse of the seasons, transitioning from the hushed light of winter to the generous glow of summer before settling into the peaceful embrace of fall and winter once again.
In Porrentruy, Switzerland, January brings a modest 17% chance of sunny weather, marking it as one of the dreariest months of the year. This trend of limited sunshine begins to shift noticeably in February, where the likelihood increases to 38%, as winter starts to give way to early signs of spring. March and April present a more promising outlook, with chances of sunshine rising to 48% and 54%, respectively. It's evident that as the year progresses, so does the opportunity for sunny days, with May, July, and September hovering around the 32-40% range. In contrast, the late autumn and winter months do not offer much in the way of sunshine, underscoring the need for cozy indoor activities during January's shorter, cloudier days.
In Porrentruy, Switzerland, January marks the beginning of the year with a modest 8 hours of daylight, a stark contrast to the vibrant 15 hours enjoyed during the peak of summer in June, July, and August. As winter deepens into February, daylight gently increases to 10 hours, hinting at the approaching spring. March follows suit, bringing 11 hours, while April boosts this to an invigorating 13 hours, signaling the revival of nature. The rhythm of light continues its upward trajectory, peaking in the warm months before gradually retreating as autumn approaches. By September, daylight diminishes to 12 hours, leading into October's shorter days of 10 hours, and continuing the descent to 9 hours in November. This cyclical pattern culminates in December, where daylight returns to 8 hours, marking a full circle back to winter’s embrace.
In January, Porrentruy experiences a brisk average wind speed of 3.0 m/s (7 mph), setting the tone for a month that often dances with the chill of winter. This wind begins a gradual decline in February and March, dipping to a consistent 2.7 m/s (6 mph), before slightly fading into April’s calmer breezes at 2.6 m/s (6 mph). As spring unfurls, winds pick up once again in May, reaching 3.2 m/s (7 mph), only to mellow in the summer months; particularly in June, where they drop to a gentle 1.9 m/s (4 mph). This trend continues through the summer, as July and August settle at around 2.2 m/s (5 mph) and 2.1 m/s (5 mph), respectively. As autumn arrives, there’s a slight uptick in wind speed in October and November, maintaining a steady flow around 2.3 m/s (5 mph) and 2.4 m/s (5 mph). The year wraps up with December bringing back a brisker pace at 2.9 m/s (7 mph), reminding residents and visitors alike of the winters that shape this charming Swiss town. Overall, the shifting winds reflect the seasonal rhythm of Porrentruy, highlighting distinct patterns that enhance its picturesque winter ambiance.
Weather in Porrentruy varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Porrentruy, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February present notable differences in weather conditions. In January, temperatures range from a minimum of -13°C (8°F) to a maximum of 14°C (58°F), with an average of 1°C (34°F). The month experiences a significant amount of precipitation, totaling 113 mm (4.4 in) over approximately 13 days, contributing to a high humidity of 91%.
In contrast, February sees a slight increase in average temperature, rising to 4°C (39°F), with a maximum reaching 18°C (64°F), while the minimum remains at -13°C (9°F). Precipitation decreases to 95 mm (3.7 in) over 12 days, and humidity drops slightly to 89%. This transition highlights a gradual warming trend as winter progresses. For more detailed information, you can check the Porrentruy weather in February.
January and March present notable differences in weather conditions. In January, temperatures range from a frigid minimum of -13°C (8°F) to a slightly warmer maximum of 14°C (58°F), with an average temperature of 1°C (34°F). The month sees substantial precipitation of 113 mm (4.4 in) spread over 13 days, accompanied by high humidity at 91%. In contrast, March experiences a milder climate, with temperatures varying from a minimum of -12°C (10°F) to a pleasant maximum of 21°C (70°F), and an average temperature of 6°C (43°F). Precipitation slightly decreases to 108 mm (4.2 in) but occurs over more days, totaling 15 days, and humidity also drops to 87%. As the seasons transition, March offers a shift towards warmer and more variable weather. For more insights on how the weather shifts during this month, check out Porrentruy weather in March.
January and April exhibit stark contrasts in weather. In January, temperatures can plummet to a minimum of -13°C (8°F), with an average hovering around 1°C (34°F) and a maximum reaching 14°C (58°F). This month is also characterized by high humidity at 91% and frequent precipitation, with rain or snow on about 13 days and a total of 113 mm (4.4 in) of precipitation. In contrast, April sees a significant warming, featuring minimum temperatures of -4°C (25°F) and average highs of 26°C (79°F), making for a comfortable average of 10°C (50°F). Although April still experiences some rain, with about 63 mm (2.5 in) over 10 days, humidity decreases to 84%. For those interested in more details on April weather, visit Porrentruy weather in April.
In January, the weather in Porrentruy can be quite harsh, with minimum temperatures plunging to -13°C (8°F) and an average of just 1°C (34°F). The month experiences significant precipitation, totaling 113 mm (4.4 in) over about 13 days, coupled with high humidity levels reaching 91%. In contrast, May brings a much more temperate climate, with minimum temperatures rising to 0°C (32°F) and an average of 13°C (56°F), peaking at a warm 30°C (85°F). Although May sees slightly higher precipitation at 144 mm (5.7 in) over 17 days, the humidity drops to 80%, contributing to a more pleasant atmosphere. For a closer look at the weather specifics during this month, check out Porrentruy weather in May.
January and June present starkly contrasting weather conditions. In January, temperatures can plummet as low as -13°C (8°F), with an average of just 1°C (34°F), making it a chilly month accompanied by high humidity at 91%. The region also experiences notable precipitation, totaling 113 mm (4.4 in) over 13 days. Conversely, June brings a significant warmth, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 34°C (93°F) and an average of 18°C (65°F). Despite slightly higher overall precipitation at 126 mm (5.0 in) over 16 days, June enjoys lower humidity levels at 82%. For more details about the delightful June weather, check out Porrentruy weather in June.
In January, the weather is characterized by much colder temperatures, with averages hovering around 1°C (34°F) and a minimum that can drop to a chilling -13°C (8°F). The month sees significant precipitation, with 113 mm (4.4 in) falling over 13 days, and the high humidity level of 91% contributes to a damp chill in the air. In contrast, July brings a dramatic shift, with average temperatures reaching a much warmer 20°C (67°F) and maximums soaring up to 36°C (97°F). While precipitation slightly increases to 115 mm (4.5 in) over 14 days, the humidity decreases to 82%, making for a more comfortable and pleasant summer climate. For more specific details about what you can expect, you can check out Porrentruy weather in July.
In January, the weather is characterized by chilly temperatures ranging from a minimum of -13°C (8°F) to a modest maximum of 14°C (58°F), with an average temperature of about 1°C (34°F). The month sees significant precipitation, totaling 113 mm (4.4 in) over 13 days and high humidity levels at 91%. In contrast, August offers a much warmer climate, with temperatures fluctuating between a minimum of 6°C (43°F) and a maximum of 35°C (95°F), averaging around 19°C (67°F). Although precipitation is similar, at 110 mm (4.3 in) over 15 days, the humidity is notably lower at 77%. For more details on the August weather in this region, visit Porrentruy weather in August.
January and September present strikingly different weather conditions. In January, temperatures can drop as low as -13°C (8°F), with an average temperature of 1°C (34°F) and a maximum of 14°C (58°F). The month is quite wet, receiving around 113 mm (4.4 inches) of precipitation over 13 days, coupled with high humidity at 91%. In contrast, September enjoys milder temperatures, where the minimum is 2°C (36°F) and the average reaches 15°C (60°F), peaking at a warm 30°C (86°F). Precipitation is less frequent, totaling 72 mm (2.8 inches) over 10 days, with a lower humidity of 81%. For a closer look at September weather in Porrentruy, you can visit Porrentruy weather in September.
In January, the weather is significantly colder, with temperatures ranging from a minimum of -13°C (8°F) to a maximum of 14°C (58°F) and an average temperature of just 1°C (34°F). The month sees substantial precipitation at 113 mm (4.4 in) over 13 days, and the humidity is relatively high at 91%. In contrast, October offers milder temperatures, with a minimum of -1°C (31°F) and a maximum reaching 24°C (75°F), resulting in a more pleasant average of 10°C (51°F). Precipitation in October is slightly less at 100 mm (3.9 in) over the same number of days, and the humidity remains a bit lower at 89%. For more information on what to expect, check out Porrentruy weather in October.
January and November offer distinct weather experiences. In January, temperatures can drop as low as -13°C (8°F), with an average of around 1°C (34°F) and a high of 14°C (58°F). This month also sees significant precipitation, totaling 113 mm (4.4 in) over 13 days, coupled with a high humidity of 91%. In contrast, November presents a milder climate, featuring minimum temperatures of -3°C (26°F), an average of 5°C (41°F), and a maximum of 20°C (68°F). Precipitation during this month is slightly lower at 88 mm (3.4 in) over the same number of days, and humidity remains relatively high at 89%. For more details on the weather, you can visit Porrentruy weather in November.
In January, the weather in Porrentruy sees slightly cooler temperatures, with a minimum of -13°C (8°F) and an average of 1°C (34°F), compared to December's minimum of -7°C (20°F) and average of 3°C (37°F). While the maximum temperature remains similar, with January peaking at 14°C (58°F) and December at 13°C (57°F), January experiences less precipitation, totaling 113 mm (4.4 in) over 13 days, in contrast to December's 157 mm (6.2 in) across 20 days. Both months share a high humidity level of 91%, making them feel quite damp. For a detailed look at December's weather specifics, you can check Porrentruy weather in December.
As January rolls into Porrentruy, the weather takes a chilly turn, contrasting sharply with the milder months that precede and follow it. While daytime highs barely touch 14°C, deep nights can plunge to a frosty -13°C, creating a stark chill that blankets the town. The average temperature hovers around 1°C, highlighting the month’s wintry character. The high humidity level of 91% adds a biting edge to the cold, making it feel even cooler. With approximately 13 days of precipitation accumulating to 113 mm, January often greets residents and visitors with a mix of rain, snow, and frequent damp days, setting it apart from the drier spells of spring and summer. For a more comprehensive overview of Porrentruy's seasonal variations, be sure to explore Porrentruy Climate.