Last updated: August 27, 2025
January in Arosa, Switzerland offers a true winter wonderland experience, with temperatures ranging from a chilly -30°C (-21°F) at night to a maximum of 5°C (40°F) during the day. The average temperature hovers around -9°C (16°F), creating the perfect backdrop for snow-covered landscapes. Visitors should prepare for 11 days of precipitation, totaling 92 mm (3.6 in), contributing to the beautiful wintry scenery. With humidity levels soaring at 92%, the air feels invigoratingly crisp, making Arosa an enchanting destination for winter sports enthusiasts and nature lovers alike.
In Arosa, Switzerland, January presents a true winter wonderland, with temperatures dipping to a brisk minimum of -30°C (-21°F) and an average chill of -9°C (16°F), while daytime highs struggle to reach 5°C (40°F). This month sets the stage for a gradual warming trend as the season progresses. By February, temperatures begin to rise, yet still remain icy, with averages at -6°C (22°F). As spring approaches, March and April bring a welcome thaw, inching temperatures closer to freezing, showcasing March's max at 11°C (52°F) and April's peak hitting 15°C (59°F). Overall, January’s frigid embrace transitions into slightly milder conditions in the following months, illustrating the gradual shift from winter’s grasp to spring's first embrace.
In January, Arosa experiences moderate precipitation, totaling 92 mm (3.6 in) over approximately 11 days of rain. This amount is consistent with the overall trend of winter months in the region, where precipitation often peaks in early months before gradually declining. By February, rainfall decreases to 65 mm (2.6 in), illustrating a typical winter pattern as the days slowly lengthen. Interestingly, as spring approaches in March, precipitation levels bounce back to 92 mm, mirroring January's totals and hinting at the dynamic weather systems characteristic of the area. This rhythmic fluctuation in precipitation not only highlights the vibrancy of Arosa's winter landscape but also sets the stage for an equally lush spring as the snow begins to melt and give way to budding flora.
In January, Arosa, Switzerland, experiences a notably high humidity level of 92%, setting the stage for a winter wonderland that is both crisp and moist. This peak in humidity gradually decreases as the months progress, dipping to 89% in February and further declining to 87% in March. The arrival of spring brings drier conditions, with humidity falling to 84% in April and reaching 80% by May. However, as the year rolls into early summer, humidity slightly rises again, settling around 82-83% from June to July. The seasonal ebb and flow continues into autumn, with humidity levels returning to 90% in October and remaining high through the end of the year. This cyclical pattern highlights Arosa's unique climate, where winter's chill coexists with a persistent atmospheric moisture that creates an enchanting alpine experience.
In January, Arosa, Switzerland, typically experiences a UV Index of 2, categorizing sun exposure as low. With a burn time of 45 minutes, it’s a comfortable month for outdoor activities without the intense worry of sunburn. However, as the season progresses, the UV Index begins to rise sharply. February marks an increase to 4, and by March, it escalates to 7, indicating high exposure where the burn time decreases to 25 minutes. The trend continues into spring and summer, peaking at 10 in both June and July, classified as very high, necessitating caution with a mere 15-minute burn time. This heightened UV exposure gradually tapers off in the fall, landing back at 5 in October and returning to 2 in December. For detailed insights on UV levels year-round, visit Arosa UV Index.
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In January, Arosa, Switzerland embraces 173 hours of sunshine, marking the beginning of the year with a gentle glow that gradually intensifies as winter fades. As we transition into February, sunlight increases significantly to 235 hours, and by March, the anticipation of spring blooms with 309 hours of radiant light. The ascent continues into April and May, peaking as the days become longer and brighter, reaching 348 hours and 361 hours, respectively. June and July bask in the summer sun, enjoying the most hours of sunshine at 386 and 408 hours. Though August sees a slight decline at 368 hours, the sunny trend persists well into autumn, with 309 hours in September and 278 hours in October. As the year winds down, November and December reflect on the shift, with 212 hours and 194 hours of sunshine, beautifully closing the year with a hint of the vibrant light that awaits in the coming months.
In Arosa, Switzerland, the likelihood of sunny weather in January stands at only 21%, making it the least sunny month of the year. This trend of limited sunshine begins the year on a relatively gloomy note, as the sunlight gradually gains momentum in February with a 43% chance, nearly doubling January's figures. Following this upward trajectory, March and April maintain a solid likelihood of sunny days at 41% and 37% respectively. As spring arrives, the chances of sunshine begin to fluctuate, ultimately reaching higher levels later in the season. This gradual increase highlights a shift from the winter blues to sunnier springs, inviting visitors to enjoy the blossoming landscape as the season progresses.
In Arosa, Switzerland, January brings around 9 hours of daylight, marking the start of the year with crisp, sunlit moments that gradually increase as winter transitions to spring. As February unfolds, daylight extends to 10 hours, offering a hint of the longer, brighter days to come. By March, this trend accelerates, with daylight reaching 11 hours, and further increases continue into April, where the sun graces Arosa with 13 hours of illumination. As spring blossoms into summer, May and June showcase the peak daylight duration of 15 hours, allowing ample time for outdoor pursuits in the beautiful alpine landscape. Following this height, daylight begins a gentle decline, with 14 hours in August and tapering down to 12 hours by September. As autumn sets in, daylight dwindles to 10 hours in October, reverting back to 9 hours in November and culminating in December with just 8 hours of daylight. This cyclical rhythm of increasing and decreasing light not only highlights the changing seasons but also encapsulates the natural beauty and charm of Arosa throughout the year.
In Arosa, Switzerland, January ushers in a gentle breeze with an average wind speed of 1.4 m/s (3 mph), setting the stage for a serene winter landscape. This calm atmosphere remains consistent, as February sees a slight uptick to 1.6 m/s (4 mph), the highest for the season. As spring approaches, wind speeds stabilize around 1.4 to 1.6 m/s but generally return to January-like conditions by March and April. The summer months maintain this tranquil vibe, fluctuating only slightly, while August and September experience the mildest winds of the year at 1.3 m/s (3 mph). As autumn arrives, the winds pick up again to 1.4 to 1.6 m/s, reminiscent of those early winter days, encapsulating Arosa’s character: a picturesque destination where gentle breezes enhance the scenic beauty year-round.
Weather in Arosa varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Arosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February present distinct but similarly cold weather patterns. In January, temperatures can plunge to a minimum of -30°C (-21°F) with an average of -9°C (16°F) and a maximum of only 5°C (40°F). This month experiences higher precipitation, totaling 92 mm (3.6 in) over 11 days, along with humidity peaking at 92%. Conversely, February is slightly milder, with minimum temperatures of -26°C (-14°F), an average of -6°C (22°F), and a maximum of 9°C (48°F). Precipitation decreases to 65 mm (2.6 in) but occurs over 12 days, while humidity remains relatively high at 89%. For more details on February weather, you can refer to Arosa weather in February.
January and March present distinct contrasts in weather, reflecting the transition from deep winter to early spring. In January, the temperatures plunge to a minimum of -30°C (-21°F) and struggle to reach an average of -9°C (16°F), with a maximum of only 5°C (40°F). The month also sees significant precipitation, with about 92 mm (3.6 in) falling over 11 days and high humidity levels at 92%. In contrast, March experiences slightly milder conditions, with minimum temperatures around -26°C (-14°F) and an average rising to -3°C (27°F), peaking at 11°C (52°F). Precipitation levels remain the same at 92 mm (3.6 in), but over a longer stretch of 16 days, and humidity decreases to 87%. For a closer look at March weather, visit Arosa weather in March.
January and April present contrasting weather patterns, with January showcasing colder temperatures and high humidity. In January, the minimum temperature can plummet to -30°C (-21°F), with an average of -9°C (16°F) and a maximum of 5°C (40°F). This month experiences significant precipitation, totaling 92 mm (3.6 in) over 11 days, accompanied by a humidity level of 92%. Conversely, April brings a milder climate, with a minimum of -24°C (-11°F) and an average temperature rising to 1°C (34°F), peaking at 15°C (59°F). Although precipitation slightly decreases to 87 mm (3.4 in) over a few more days, the humidity drops to 84%, indicating a shift towards drier conditions. For more detailed insights into the April climate, you can check Arosa weather in April.
January and May present stark contrasts in weather patterns. In January, temperatures plummet to a minimum of -30°C (-21°F) and average around -9°C (16°F), with a maximum reaching only 5°C (40°F). This chilling month sees heavy precipitation totaling 92 mm (3.6 in) over 11 days, coupled with high humidity at 92%. In contrast, May experiences significantly milder weather, with minimum temperatures of -13°C (9°F), average temperatures climbing to 5°C (41°F), and maximum temperatures peaking at a comfortable 21°C (69°F). The precipitation increases to 161 mm (6.3 in) spread over 23 days, with humidity slightly lower at 80%. For more detailed information, you can check Arosa weather in May.
January and June present a stark contrast in weather. In January, temperatures can plummet to a minimum of -30°C (-21°F), with an average low of -9°C (16°F) and a maximum reaching only 5°C (40°F). The month experiences significant precipitation, totaling 92 mm (3.6 in) over 11 days, coupled with high humidity at 92%. In contrast, June showcases a milder climate, with temperatures ranging from a minimum of -2°C (28°F) to a pleasant average of 10°C (51°F), peaking at a maximum of 26°C (79°F). This month sees even more precipitation at 147 mm (5.8 in) across 19 days, though the humidity is slightly lower at 82%. For more details, check out Arosa weather in June.
January and July present strikingly different weather patterns. In January, temperatures plummet with a minimum of -30°C (-21°F) and an average of -9°C (16°F), while July boasts a much milder climate, with temperatures ranging from a minimum of 2°C (36°F) and averaging 11°C (53°F) to a maximum of 25°C (78°F). Additionally, January experiences significant precipitation over 11 days, totaling 92 mm (3.6 in), compared to July, which sees even more rain, receiving 152 mm (6.0 in) across 20 days. Humidity levels also differ, sitting at a high 92% in January but slightly lower at 83% in July. For a closer look at the weather during July, you can check out Arosa weather in July.
January and August present stark contrasts in weather. In January, temperatures plunge to a minimum of -30°C (-21°F) and struggle to rise above an average of -9°C (16°F), with a maximum of only 5°C (40°F). The month is marked by high humidity at 92%, and precipitation occurs on 11 days, totaling 92 mm (3.6 in). In contrast, August brings milder conditions, with temperatures ranging from a minimum of 0°C (31°F) to an average of 11°C (52°F) and a maximum of 23°C (74°F). This summer month experiences significantly more precipitation, reaching 197 mm (7.8 in) spread across 20 days, accompanied by lower humidity at 80%. For more insights on August weather, you can check Arosa weather in August.
In January, the weather is harshly cold, with average temperatures around -9°C (16°F) and a maximum of just 5°C (40°F), while the minimum can plunge down to -30°C (-21°F). The month sees significant precipitation, totaling 92 mm (3.6 in) over 11 days, along with a high humidity level of 92%. In stark contrast, September offers a milder climate with average temperatures rising to 7°C (46°F), peaking at 20°C (68°F) during the day, although it still experiences chilly nights with a minimum of -11°C (13°F). The month also has increased precipitation, reaching 134 mm (5.3 in) across 16 days, but with lower humidity at 83%. For more details on the conditions, check out Arosa weather in September.
January and October present striking contrasts in weather conditions. In January, temperatures plummet, with minimums reaching -30°C (-21°F) and an average of -9°C (16°F), while max temperatures only climb to 5°C (40°F). Conversely, October sees milder temperatures, with a minimum of -9°C (16°F) and averages around 3°C (39°F), peaking at a comfortable 16°C (61°F). Precipitation is notably higher in October at 133 mm (5.3 in) over 12 days, compared to January’s 92 mm (3.6 in) over 11 days. Humidity remains fairly high in both months, but slightly lower in October at 90%, as opposed to January's 92%. For more insights on the weather during this month, check out Arosa weather in October.
January and November present notably different weather conditions. In January, the temperatures are considerably colder, with a minimum of -30°C (-21°F) and an average of -9°C (16°F), while November sees slightly milder temperatures, ranging from a minimum of -21°C (-5°F) to an average of -3°C (27°F). Precipitation is relatively similar, with January receiving 92 mm (3.6 in) over 11 days and November slightly wetter at 103 mm (4.0 in) across 13 days. Additionally, January maintains a high humidity of 92%, compared to November’s 88%, contributing to the overall chill of the mid-winter month. For a closer look at the weather in November, check out Arosa weather in November.
In comparing January and December, January experiences slightly colder temperatures, with an average of -9°C compared to December's -7°C. The minimum temperatures in both months are quite low, with January dropping to -30°C and December to -27°C. January also has less precipitation, with 92 mm spread over 11 days, while December sees more rainfall at 129 mm over 16 days. Humidity levels are slightly higher in January at 92%, compared to December's 90%. For more details, visit Arosa weather in December.
In January, Arosa, Switzerland, experiences a stark contrast to the milder months, enveloping visitors in a winter wonderland defined by cold temperatures and significant precipitation. With an average low of -9°C and the potential for even deeper chills, it's a time when the landscape is blanketed in snow, perfect for winter sports enthusiasts. The high humidity levels and notable precipitation days contribute to the ethereal beauty of the region, though they can also intensify the cold. As you prepare for your adventure, understanding the unique January climate can enhance your experience; for more details, check out Arosa Climate.