Arosa Weather in January

Arosa in January sees very low daytime temperatures of -3°C (27°F) and nighttime lows of -12°C (10°F). Rainfall is fairly high this month at around 88 mm (3.5 in), so pack a rain jacket to stay dry.

Rainfall in Arosa in January

Historically, the month has about 16 days of snow, averaging 88 mm (3.5 in) in total. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Arosa in January

In January, expect very low temperatures in Arosa, with highs of -3°C (27°F) and lows of -12°C (10°F) at night. The month of January belongs to the winter season. Staying warm is the main priority this month, especially during mornings and evenings. With overnight lows of -12°C (10°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. This month tends to bring the coldest weather of the year, so be sure to pack enough warm clothing to stay comfortable.

Sunshine in Arosa in January

The area enjoys a balanced 112 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Wind Speed in Arosa in January

Average wind conditions reach 1 m/s (2 knots) in January. This creates generally peaceful weather with subtle air movement. Remember this is an average: some days are windless while others have noticeable or very gentle breezes.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Arosa. Our weather planner can help you explore destinations with more pleasant weather conditions.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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For a detailed overview over the year and the best time to visit Switzerland, check out our Arosa's climate page.

Arosa Temperature in January

Min Temperature -12°C (10°F)  

Max Temperature -3°C (27°F)  

Chance of Rain 53%  

Precipitation 88 mm (3.5 in)  

Rainy days 16 days  

Humidity 76% *  

Windspeed 1 m/s (2 knots) *  

Sunshine 112 hours *  

Percentage Sunshine 55% *  

* Data from: Davos Dorf, Switzerland (11 KM, 7 Miles).

Daily Historical Temperatures

51-year average (1976-2026)

Based on our historical records, temperatures in Arosa typically stay consistent throughout January, with daily highs averaging around -3°C (27°F). Nights are very cold, with lows typically ranging from -7°C (19°F) to -5°C (23°F).

Average temperatures in January

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Daily Historical Precipitation

51-year average (1976-2026)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in January

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Historical weather for Arosa in January

Browse day-by-day weather records for Arosa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Arosa historical weather extremes in January

Our historical data for Arosa spans 2000 to 2025, revealing these weather extremes.

• The hottest January day on record in Arosa reached 12°C (54°F) (January 24, 2001).
• Arosa experienced its chilliest January day on January 6, 2017, reaching only -13°C (9°F).
• Arosa registered its coldest January night on January 15, 2006, with temperatures dropping to -20°C (-4°F).
• The heaviest January precipitation occurred on January 28, 2025, when 57 mm (2.2 in) of precipitation fell.

What to Wear in Arosa in January

It's wise to bundle up for freezing conditions in Arosa in January. If you have a winter jacket with good insulation, waterproof winter boots, thermal layers, and warm accessories it's smart to pack them. Hand and foot warmers can be lifesavers, especially during the night. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Arosa in January

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

1/10

Walking

1/10

Camping

1/10

Outdoor sports

1/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Switzerland, check out our Arosa's climate page.

More climate data for Arosa

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Arosa climate overview or explore weather in Switzerland.