Arosa weather in January
Temperature, rain and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Poor
Best time to visit: July – August
Best for skiing: November – April
What is the weather like in Arosa in January?
In January, Arosa is freezing cold: daytime highs average −3 °C, and nights often drop below freezing (−12 °C). The sun is scarce, with only about 4 hours a day. Precipitation, often as snow, falls on about 13 days, totalling 79 mm. Snow falls on about 12 days. All in all, January is not an ideal month for a holiday in Arosa.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 10 | 13 | 17 |
| Day | −2° | −3° | −1° |
| Night | −11° | −12° | −11° |
| Sun | 3 h | 4 h | 4 h |
| Rain days | 13 | 13 | 12 |
More details for January
- Daylight
- 8 h 56 min08:02 – 16:58
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 7 km/haverage daily peakAll months
- Cloud cover
- 64 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 12 days1 cm or more of fresh snowAll months
- Time zone
- UTC+1Europe/Zurich
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %10 %
- Few rainy daysweight 30 %37 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in January
- Warm jacket
- Hat, scarf & gloves
- Rain jacket or umbrella
Arosa in January: quick answers
Is Arosa hot in January?
No. In January, Arosa is freezing cold: daytime highs average −3 °C and nights drop to about −12 °C.
Does it rain much in Arosa in January?
Rain is frequent, with about 13 rainy days and 79 mm in total.
Arosa month by month
The whole year in ArosaAll destinations: SwitzerlandWhere to go in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences