Climate · Switzerland

Arosa

Mild and wet from June to September; cold and wet from December to March.

Typical weather, averaged over 30 years46.8°N1,800 m above the sea
  1. Jan28°-2°7°-14°Rain on about three days a week.
  2. Feb31°-1°10°-12°Rain on about three days a week.
  3. Mar37°3°16°-9°Rain on about three days a week.
  4. Apr43°6°23°-5°Rain on about four days a week.
  5. May51°11°32°0°Rain on about five days a week.
  6. Jun60°16°39°4°Rain on about five days a week.
  7. Jul64°18°43°6°Rain on about four days a week.
  8. Aug65°18°43°6°Rain on about four days a week.
  9. Sep58°14°37°3°Rain on about four days a week.
  10. Oct52°11°32°0°Rain on about three days a week.
  11. Nov40°4°20°-7°Rain on about three days a week.
  12. Dec30°-1°9°-13°Rain on about three days a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The best months

The warm season runs from June to September, with highs near 62°F and nights near 41°F. From December to March, highs stay near or below freezing, around 31°F. The rain and snow come from May to August, on about four days a week. October to March is the driest stretch, with rain or snow on about three days a week. Daylight runs from about 8½ hours in December to 16 hours in June.The warm season runs from June to September, with highs near 17°C and nights near 5°C. From December to March, highs stay near or below freezing, around -1°C. The rain and snow come from May to August, on about four days a week. October to March is the driest stretch, with rain or snow on about three days a week. Daylight runs from about 8½ hours in December to 16 hours in June.

Where Arosa sits

Europe/Zurich

this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
46.8°Nnorthern hemisphere
Above the sea
1,800 mhigh country
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
8:02 AM7:27 AM6:36 AM6:36 AM5:48 AM5:26 AM5:41 AM6:18 AM6:58 AM7:37 AM7:23 AM7:59 AMsets 4:58 PMsets 5:44 PMsets 6:25 PMsets 8:07 PMsets 8:47 PMsets 9:16 PMsets 9:13 PMsets 8:34 PMsets 7:36 PMsets 6:36 PMsets 4:49 PMsets 4:34 PM
Nearest of ours
Bad Ragaz28 km north-west

The land around Arosa, shaded by its typical high in January, the planning map's own layer.The land around Arosa, shaded by its typical high in February, the planning map's own layer.The land around Arosa, shaded by its typical high in March, the planning map's own layer.The land around Arosa, shaded by its typical high in April, the planning map's own layer.The land around Arosa, shaded by its typical high in May, the planning map's own layer.The land around Arosa, shaded by its typical high in June, the planning map's own layer.The land around Arosa, shaded by its typical high in July, the planning map's own layer.The land around Arosa, shaded by its typical high in August, the planning map's own layer.The land around Arosa, shaded by its typical high in September, the planning map's own layer.The land around Arosa, shaded by its typical high in October, the planning map's own layer.The land around Arosa, shaded by its typical high in November, the planning map's own layer.The land around Arosa, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Through the year

week by week

Temperature

Highs from 28°F in January to 65°F in August.Highs from -2°C in January to 18°C in August.

Chance of a wet day

Wettest in June (68% of days), driest in October (43%).

Cloud cover

Clearest in July (52% cover), cloudiest in May (65%).

Daylight

From 8h 36m in December to 15h 48m in June.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the best months. Hover or tap a week for its figures.

Month by month

°F°C

Arosa, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryBelow freezing
7°-14°28°-2°
3 days59%9h 00m
FebruaryBelow freezing
10°-12°31°-1°
3 days61%10h 13m
MarchBelow freezing
16°-9°37°3°
3 days60%11h 49m
April
23°-5°43°6°
4 days60%13h 32m
May
32°0°51°11°
5 days65%15h 01m
JuneWarm season
39°4°60°16°
5 days61%15h 48m
JulyWarm seasonAt its best
43°6°64°18°
4 days52%15h 26m
AugustWarm seasonAt its best
43°6°65°18°
4 days54%14h 07m
SeptemberWarm season
37°3°58°14°
4 days57%12h 27m
October
32°0°52°11°
3 days60%10h 44m
November
20°-7°40°4°
3 days62%9h 18m
DecemberBelow freezing
9°-13°30°-1°
3 days59%8h 36m

When is the best time to visit Arosa?


The best months are July to August: highs near 64°F, nights near 43°F, and rain on about four days a week. Winter sports depend on snow, which these pages don't measure.The best months are July to August: highs near 18°C, nights near 6°C, and rain on about four days a week. Winter sports depend on snow, which these pages don't measure.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

Questions


What is the warmest month in Arosa?

August, with highs near 65°F and lows near 43°F. The coolest is January, with highs near 28°F.August, with highs near 18°C and lows near 6°C. The coolest is January, with highs near -2°C.

When does it rain most in Arosa?

June, with rain on about five days a week. October is the driest, with rain on about three days a week.

How long are the days in Arosa?

From about 8½ hours in December to 16 hours in June.

When are the skies clearest in Arosa?

July, when cloud covers about 52% of the sky on average. May is the cloudiest, at about 65%.

Places with a year like Arosa's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to Arosa's through the year, one place a country. “Six months apart”: their winter is Arosa's summer.

Elsewhere in Switzerland

All of Switzerland

Where to stay

1 in our collection

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Arosa. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.