January Weather in Rapperswil, Switzerland

Last updated: August 27, 2025

January in Rapperswil, Switzerland, showcases a dramatic interplay of winter's chill and occasional warmth. With maximum temperatures reaching 13°C (56°F) and an average dipping to 0°C (32°F), the month can fluctuate between cozy and crisp. The minimum temperature often plummets to -12°C (10°F), encapsulating the heart of winter. During this month, Rapperswil experiences considerable precipitation, totaling 127 mm (5.0 in) over 12 days, contributing to a ravishingly humid atmosphere of 92%. Whether draped in snow or glistening with rain, January paints a unique portrait of this enchanting Swiss town.

January Temperature in Rapperswil

In Rapperswil, Switzerland, January brings a notable chill, with temperatures ranging from a brisk -12°C (10°F) at night to a slightly more comfortable 13°C (56°F) during the day. The month averages around 0°C (32°F), indicating a stark winter landscape that often enchants visitors. As January transitions into February, a deeper freeze sets in, showcasing the lowest temperatures of the year with minimums dropping to -15°C (6°F). However, as the weeks progress into March and April, a gradual warming trend emerges, welcoming milder averages of 4°C (40°F) and 8°C (47°F), respectively. This steady rise hints at the approaching spring, with maximum temperatures touching 19°C (67°F) by March's end. Overall, January serves as a reflective pause in Rapperswil's seasonal cycle, setting the stage for the warmth and vibrancy that lie just ahead.

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

The chart illustrates January temperature patterns in Rapperswil, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rapperswil, 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).
JanFebMarAprMayJunJulAugSepOctNovDec323640475362656457494035
Data source: Temperature data for Rapperswil generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Rapperswil

In January, Rapperswil experiences an average precipitation of 127 mm (5.0 in), falling over 12 days of the month. This sets the tone for a winter that is wetter than February, where rainfall drops to 95 mm (3.7 in). Following January, the precipitation levels see a rise again in March, reaching 112 mm (4.4 in), before taking a turn with April's lighter fall of 87 mm (3.4 in). Notably, May and June bring the year's highest totals, with May recording a substantial 159 mm (6.3 in) and June peaking at 187 mm (7.4 in). The trend of fluctuating precipitation continues throughout the summer months, with July and August also contributing significant rainfall, while the later part of the year tends to level out with milder totals, culminating in December's 155 mm (6.1 in). This pattern illustrates Rapperswil's diverse climate, characterized by a fairly wet start to the year followed by an even wetter early summer.

January Precipitation Trends in Rapperswil

The chart displays monthly precipitation patterns in Rapperswil, 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 Rapperswil, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec127951128715918714515812412880155
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Rapperswil

In Rapperswil, Switzerland, January is characterized by a notably high humidity level of 92%, contributing to a crisp and cool ambiance typical of winter. This trend continues into February with a slight decrease to 89%, indicating a gradual relief as the month progresses. As spring approaches, March sees humidity dip further to 87%, followed by a steady decline reaching 84% in April and 80% in May. The onset of summer brings a slight increase, with humidity levels hovering around 82% to 83% from June to August. As autumn sets in, humidity rises again, peaking at 90% in October and sustaining a high of 88% in November before returning to 90% in December. This cyclical pattern of humidity demonstrates Rapperswil's transition through seasons, maintaining a generally moist climate throughout the year, with winter and late autumn months feeling particularly damp.

January Average Humidity in Rapperswil

This chart illustrates the average monthly humidity levels in Rapperswil, 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 Rapperswil is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%89%87%84%80%82%83%80%83%90%89%90%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Rapperswil

In January, Rapperswil experiences a UV Index of 2, indicating a low level of sun exposure with a safe burn time of 45 minutes. This trend of low UV exposure continues into December, while February sees a slight increase to 3 on the Index, transitioning into a moderate exposure category with a reduced burn time of 30 minutes. As spring approaches, UV levels rise, with March reaching 5 and April peaking at 7, marking the start of a season where sun safety becomes increasingly important. The summer months bring even higher indices; from May to August, the UV Index remains in the very high category, necessitating caution as burn times drop significantly to just 15 minutes. By September, the UV Index declines to 6, before tapering off through the fall months of October and November, landing back at 3 and continuing with low levels in December. This clear fluctuation in UV exposure underscores the importance of monitoring the UV Index as the seasons change in Rapperswil. For more insights on managing sun exposure, visit Rapperswil UV Index.

Maximum UV Index Levels in Rapperswil for January

The chart shows the monthly maximum UV Index (UVI) for Rapperswil 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 Rapperswil typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357810986432
Data source: Rapperswil 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 Rapperswil

In Rapperswil, Switzerland, January ushers in a modest 163 hours of sunshine, setting the stage for a gradual increase in daylight that unfolds over the year. As winter gives way to spring, February experiences a significant jump to 227 hours, hinting at the awakening of nature. By March, the days grow even brighter with 299 hours, nurturing a sense of anticipation. The trend continues through April and May, where sunshine peaks at 355 and 365 hours respectively, promising vibrant blooms and warmer days. The summer months shine even brighter, with July basking in 410 hours, the high point of the year. As autumn descends, Rapperswil gracefully transitions, showcasing a gentle decline in sunshine hours through August to October, before the early onset of winter brings November’s 211 hours and December’s 183 hours. This dance of light reflects not just the changing seasons, but also the unique charm of Rapperswil throughout the year.

Monthly Sunshine Duration in Rapperswil: January Highlighted

The January sunshine duration represents the total number of hours Rapperswil 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.
JanFebMarAprMayJunJulAugSepOctNovDec163h227h299h355h365h382h410h377h314h275h211h183h
Data source: Rapperswil January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Rapperswil During January

In Rapperswil, Switzerland, January's weather presents a modest 17% chance of sunshine, making it one of the gloomiest months of the year. As we look towards February, the likelihood of sun nearly doubles to 38%, signifying a gradual shift towards brighter days. This upward trend continues through the spring months, peaking in April with a 47% chance of sunny weather. Interestingly, while the sunniest months of the year arrive in March and April, the overall pattern highlights a seasonal increase; by mid-year, the sun shines down on Rapperswil about 32-34% of the time. As winter gives way to spring, residents can anticipate a welcome boost in daylight, though January remains a time for cozy interiors and embracing the winter chill.

Percentage of Sunny Days in January in Rapperswil

The chart illustrates the percentage of sunny days in Rapperswil 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 Rapperswil experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%38%44%47%33%32%34%37%43%41%29%36%
Data source: Rapperswil January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Rapperswil in January

In Rapperswil, Switzerland, January brings a modest 8 hours of daylight, as the year begins in the depths of winter. However, as the month progresses, there's a notable increase in sunlight, paving the way for February's 10 hours. This upward trend continues into March, where daylight reaches 11 hours, signaling the gradual awakening of spring. By April, the days stretch to 13 hours, and the momentum carries into May and June, boasting 15 hours of daylight—pink skies and blooming landscapes in full view. As summer peaks in July, the daylight remains steadfast at 15 hours, slowly tapering off in August and September. The descent into shorter days begins thereafter, with 10 hours in October, followed by the return to 9 hours in November and back to 8 hours in December, creating a rhythmic cycle of light and dark that defines each season in this picturesque locale.

Average Daylight Hours in Rapperswil for January

The chart illustrates the variation in daylight duration in Rapperswil throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 56m10h 16m11h 56m13h 38m15h 6m15h 52m15h 28m14h 9m12h 30m10h 48m9h 18m8h 31m
Data source: Rapperswil daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Rapperswil

In Rapperswil, Switzerland, the January wind whispers gently, averaging a modest 2.0 m/s (5 mph). This inaugural month of the year stands out slightly, promising a brisk start as it outpaces the following months. As February rolls in with a slight dip to 1.9 m/s (4 mph), the winds tend to stabilize, maintaining a consistent, serene atmosphere throughout spring. By May, a subtle upturn to 2.2 m/s (5 mph) hints at a welcoming warmth, but summer’s approach sees a slight lull, with speeds averaging 1.5 m/s (3 mph) in June and August. Overall, the annual wind patterns in Rapperswil gracefully transition from January's invigorating breezes to the more tranquil whispers of late summer, showcasing a rhythmic ebb and flow of nature's breath.

Average January Wind Speed in Rapperswil

The chart displays monthly wind speed patterns in Rapperswil, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.0 m/s1.91.81.92.21.51.61.51.51.61.61.9
Data source: Rapperswil January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Rapperswil Compares to Other Months

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

In January, the weather is characterized by colder temperatures, with a minimum of -12°C (10°F) and an average of 0°C (32°F), while February sees a slight warming trend with a minimum of -15°C (6°F) but an average increase to 2°C (36°F). Although January experiences more precipitation at 127 mm (5.0 in) over 12 days, February's precipitation drops to 95 mm (3.7 in) while maintaining the same number of wet days. Humidity levels also decrease slightly from 92% in January to 89% in February. For more detailed insights on February's climate, check out Rapperswil weather in February.

In January, temperatures can drop significantly, with a minimum of -12°C (10°F) and an average of around 0°C (32°F), peaking at a maximum of 13°C (56°F). The month receives considerable precipitation of 127 mm (5.0 in) over approximately 12 days, coupled with high humidity at 92%. In contrast, March experiences a slight warming trend, with temperatures ranging from a minimum of -16°C (4°F) to a maximum of 19°C (67°F), producing a higher average of 4°C (40°F). Although precipitation decreases to 112 mm (4.4 in) over 17 days, the humidity remains relatively high at 87%. For more details on the specific conditions experienced during March, you can check Rapperswil weather in March.

January and April present quite different weather patterns. January is significantly colder, with temperatures ranging from a frigid minimum of -12°C (10°F) to a maximum of 13°C (56°F), and an average temperature of 0°C (32°F). The month also sees high precipitation levels at 127 mm (5.0 in) over 12 days, accompanied by a humidity of 92%. In contrast, April experiences milder temperatures, with a minimum of -7°C (19°F), an average of 8°C (47°F), and a maximum reaching 24°C (76°F). Precipitation decreases to 87 mm (3.4 in) while maintaining a similar number of rainy days, but humidity drops slightly to 84%. For more detailed insights, you can check Rapperswil weather in April.

In January, the weather is quite chilly, with temperatures ranging from a minimum of -12°C (10°F) to a maximum of 13°C (56°F). The average temperature hovers around freezing at 0°C (32°F), accompanied by high humidity at 92% and precipitation totaling 127 mm (5.0 in) over about 12 days. In contrast, May brings significantly milder conditions, with temperatures fluctuating from -5°C (24°F) to a warm 28°C (84°F), and an average temperature of 12°C (53°F). While May experiences slightly higher precipitation at 159 mm (6.3 in) across approximately 20 days, the humidity drops to 80%, making the weather feel more pleasant. For a closer look at May's weather patterns, visit Rapperswil weather in May.

In January, the weather is characterized by cold temperatures, with a minimum of -12°C (10°F) and an average of around 0°C (32°F), creating a frosty atmosphere. The month sees significant precipitation of 127 mm (5.0 in) over approximately 12 days, along with high humidity levels at 92%. Conversely, June experiences much warmer conditions, featuring a minimum temperature of 4°C (40°F) and an average of 17°C (63°F), reaching highs of 32°C (90°F). While June has a higher total precipitation of 187 mm (7.4 in) across 17 days, the overall humidity is lower at 82%. For a closer look at June weather specifics, you can visit Rapperswil weather in June.

In January, the weather is quite chilly, with temperatures ranging from a brisk -12°C (10°F) at its lowest to a mild maximum of 13°C (56°F), resulting in an average of around 0°C (32°F). This month experiences significant precipitation, totaling 127 mm (5.0 in) over approximately 12 days, coupled with high humidity at 92%.

In contrast, July brings significantly warmer conditions, with temperatures soaring from a minimum of 8°C (47°F) to a peak of 33°C (91°F) and an average temperature of 18°C (65°F). While it is slightly wetter, with 145 mm (5.7 in) of precipitation over 16 days, humidity is lower at 83%. For more detailed information on July weather, you can check Rapperswil weather in July.

When comparing the weather in January and August, it's clear that there is a significant contrast in temperature and conditions. January is characterized by cold temperatures, with a minimum dropping to -12°C (10°F) and an average of around 0°C (32°F), while August enjoys much milder weather, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 32°C (90°F). Precipitation levels are notable in both months, with January receiving about 127 mm (5.0 in) over 12 days and August slightly higher at 158 mm (6.2 in) over 15 days. Additionally, January's humidity is much higher at 92%, compared to August’s 80%. This variation highlights the stark differences in the climate experienced throughout the year. For more details on weather in August, you can check out Rapperswil weather in August.

In January, the weather is characterized by much colder temperatures, with a minimum of -12°C (10°F) and an average of 0°C (32°F), while September enjoys milder conditions with temperatures ranging from a minimum of 2°C (36°F) to a comfortable average of 14°C (57°F). January experiences higher humidity at 92%, contributing to the chilly atmosphere, whereas September's humidity is relatively lower at 83%. Both months see similar levels of precipitation, with January receiving 127 mm (5.0 in) over 12 days and September slightly less at 123 mm (4.9 in) but over a longer span of 14 days. For more details on September weather, you can check Rapperswil weather in September.

In January, the weather is markedly colder, with temperatures ranging from a frigid -12°C (10°F) to a maximum of 13°C (56°F), while October offers a much milder climate, with temperatures between 0°C (32°F) and 22°C (72°F). Both months experience similar levels of precipitation, with January receiving 127 mm (5.0 in) over 12 days and October totaling 128 mm (5.0 in) across 13 days. Humidity levels are slightly higher in January at 92%, compared to 90% in October. For a closer look at October's climate, you can visit Rapperswil weather in October.

January and November present distinct differences in weather patterns. In January, temperatures can drop as low as -12°C (10°F), with an average of 0°C (32°F) and a maximum reaching 13°C (56°F). This month experiences more precipitation, totaling 127 mm (5.0 in) over about 12 days, along with higher humidity levels at 92%. In contrast, November has milder temperatures, ranging from a minimum of -5°C (24°F) to a maximum of 20°C (69°F), with an average of 4°C (40°F). Although it has slightly more precipitation days at 13, the total amount is lower at 80 mm (3.1 in), accompanied by a slightly lower humidity level of 88%. For more details on November conditions specifically, check out Rapperswil weather in November.

In comparing the weather of January and December, January tends to be slightly colder on average, with temperatures ranging from a minimum of -12°C (10°F) to a maximum of 13°C (56°F), while December sees milder temperatures from -10°C (14°F) to a maximum of 12°C (54°F). Precipitation is also notable, as January receives 127 mm (5.0 in) over 12 days, compared to December's 155 mm (6.1 in) across 19 days, indicating that December typically has more rainy days. Additionally, January has a slightly higher humidity level at 92%, while December's humidity sits at 90%. For more detailed information, you can check out Rapperswil weather in December.

Compare Rapperswil's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Rapperswil

In January, Rapperswil experiences a notable shift in weather, characterized by cooler temperatures and increased humidity compared to other months. With an average temperature hovering around freezing, residents and visitors can expect brisk conditions that often dip well below zero at night. The month also brings significant rainfall, evidenced by a high number of precipitation days, making it one of the wetter periods of the year. This blend of cold, damp weather sets January apart, creating a unique winter atmosphere perfect for cozy indoor activities. For more detailed insights into the weather patterns throughout the year, visit Rapperswil Climate.