How high is Unterwasser?

The village of Unterwasser is at 910 m and the ski area rises to 2262 m (Chäserrugg), a vertical drop of 1352 m.

What is the temperature difference between the village and the summit in Unterwasser?

Expect about 8 °C less at the summit (2262 m) than in the village (910 m), using the mean lapse rate of 0.6 °C per 100 m. The “Summit weather” section shows the forecast computed at 2262 m.

When does it snow in Unterwasser?

In the village (910 m) the mean temperature stays below 2 °C from January to February (1991–2020 normals), when precipitation mostly falls as snow. Higher up, snow can fall in any season.

Where can I see the weather on the slopes of Unterwasser?

The “Summit weather” section on this page gives, for Chäserrugg (2262 m), min/max temperature, 7-day snowfall, wind and gusts, plus the freezing level and the estimated snow line.

What is the warmest month in Unterwasser?

The warmest month in Unterwasser is August, averaging 15.7 °C (1991–2020 normal). The coldest is February at 1.0 °C.

How much does it rain in Unterwasser per year?

Unterwasser receives about 1681 mm of precipitation a year. The wettest month is July (170 mm), the driest April (105 mm).

When is the best time to visit Unterwasser?

For warmth and sunshine: August (15.7 °C on average, — h of sun). The coldest month is February (1.0 °C). Check the 15-day forecast above for your dates.

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Home › St. Gallen › Unterwasser

Weather in Unterwasser

St. Gallen, 910 m · summit 2262 m · continuously updated

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Wind: –
Humidity: –
Rain ahead: –
Sunset: –

Temperature · last 4 and next 28 hours

Unterwasser weather: the next 24 hours

Updated hourly.

Unterwasser 15-day forecast

Two-week trend.

Rain radar

Sun and golden hours

Sunrise –, golden light until –

Sunset –, golden light from –

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Air quality

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European index, measured continuously.

UV index

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Daily maximum — protection advised from 3.

Freezing level

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Snow settles about 300 m below it.

Around Unterwasser

Neighbouring municipalities, as the crow flies.

Wildhaus4 km Säntis / Schwägalp6 km Ebenalp / Kronberg9 km Amden12 km Kerenzerberg18 km Flumserberg20 km Atzmännig26 km Pizol26 km

7-day forecast for Unterwasser

Today (Wednesday 7 Oct) in Unterwasser: overcast, 11 to 20 °C, precipitation 0.0 mm (5 %), wind up to 4 km/h. Tomorrow: rain, 7 to 14 °C.

Show the 7-day table

Day	Weather	Min	Max	Precip.	Wind
Today	overcast	11 °C	20 °C	0.0 mm	4 km/h
Tomorrow	rain	7 °C	14 °C	25.0 mm	21 km/h
Fri 9 Oct	light rain	6 °C	11 °C	0.3 mm	8 km/h
Sat 10 Oct	showers	10 °C	12 °C	8.7 mm	12 km/h
Sun 11 Oct	light rain	8 °C	10 °C	4.8 mm	15 km/h
Mon 12 Oct	overcast	6 °C	12 °C	0.0 mm	9 km/h
Tue 13 Oct	partly cloudy	3 °C	14 °C	0.0 mm	6 km/h

Forecast updated on 07.10.2026 at 20:25 (Open-Meteo model, elevation 910 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected today in Unterwasser. Tomorrow: rain from 10:00 to 00:00. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Unterwasser

Wednesday 7 Oct in Unterwasser, hour by hour: sunny in the morning, overcast in the afternoon, overcast in the evening. Low 11 °C around 08:00, high 20 °C around 13:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	overcast	12 °C	3 km/h
01:00	overcast	13 °C	2 km/h
02:00	overcast	13 °C	3 km/h
03:00	overcast	12 °C	2 km/h
04:00	overcast	12 °C	4 km/h
05:00	partly cloudy	12 °C	4 km/h
06:00	partly cloudy	11 °C	4 km/h
07:00	mostly sunny	11 °C	4 km/h
08:00	sunny	11 °C	4 km/h
09:00	mostly sunny	14 °C	2 km/h
10:00	overcast	17 °C	2 km/h
11:00	sunny	18 °C	4 km/h
12:00	overcast	19 °C	4 km/h
13:00	overcast	20 °C	2 km/h
14:00	overcast	20 °C	3 km/h
15:00	overcast	20 °C	3 km/h
16:00	overcast	19 °C	1 km/h
17:00	partly cloudy	19 °C	2 km/h
18:00	overcast	18 °C	3 km/h
19:00	overcast	16 °C	2 km/h
20:00	overcast	16 °C	2 km/h
21:00	overcast	16 °C	2 km/h
22:00	overcast	14 °C	4 km/h
23:00	overcast	13 °C	3 km/h

Hourly forecast issued 07.10.2026 for Unterwasser (910 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

3000 mRain-snow line

There is no snow on the ground in Unterwasser at the moment, neither at the summit (2262 m) nor in the village (910 m). Swiss resorts usually open between late November and mid-December; this page is refreshed every night as soon as the first snow falls.

Modelled values (Open-Meteo, computed at the stated altitude), not measurements taken on the slopes. Updated on 07.10.2026.

Weather today in Unterwasser

Today, Wednesday 7 Oct in Unterwasser: overcast, 11 to 20 °C, wind up to 4 km/h. No precipitation expected.

Unterwasser weather tomorrow

Tomorrow, Thursday 8 Oct, in Unterwasser: rain, 7 to 14 °C, wind up to 21 km/h. Precipitation expected: 25.0 mm, 99 % probability.

What is the temperature in Unterwasser?

Today in Unterwasser (910 m): 11 to 20 °C. Tomorrow: 7 to 14 °C. Over the next 7 days, highs range from 10 to 20 °C, averaging 13 °C.

Unterwasser weekend weather

This weekend in Unterwasser: Saturday showers, 10 to 12 °C; Sunday light rain, 8 to 10 °C.

Will it rain in Unterwasser this week?

Yes: 3 days with precipitation are expected in Unterwasser over the next 7 days, 38.8 mm in total. Wettest day: Thursday 8 Oct (25.0 mm).

What is the UV index in Unterwasser?

Today in Unterwasser (910 m), the UV index peaks at 3 (moderate) around midday. Hat, sunglasses and sunscreen are recommended between 11 am and 3 pm. In the mountains, radiation rises by about 10 % per 1,000 m, and snow reflects up to 80 % of it.

The best day to go out in Unterwasser

The best day of the next 7 in Unterwasser: Tuesday 13 Oct, partly cloudy, up to 14 °C.

Climate of Unterwasser: 1991–2020 normals

In Unterwasser (910 m), the mean annual temperature is 7.9 °C. The warmest month is August (15.7 °C on average) and the coldest February (1.0 °C). About 1681 mm of precipitation falls per year, peaking in July (170 mm) with a minimum in April (105 mm). On average there are 114 frost days and 6 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 26.1 °C and the absolute minimum −10.0 °C.

7.9 °CMean annual temperature

1681 mmPrecipitation per year

114Frost days per year

42Summer days (≥ 25 °C)

JFMAMJJASOND

Mean monthly precipitation (mm) — bar height relative to the wettest month.

Month	Mean T	Abs. max	Abs. min	Precip. (mm)	Frost days	Summer days
Jan	1.4 °C	11.6 °C	−9.7 °C	151	25	0
Feb	1.0 °C	12.3 °C	−10.0 °C	125	22	0
Mar	3.2 °C	13.5 °C	−7.7 °C	146	18	0
Apr	6.0 °C	16.1 °C	−4.3 °C	105	8	0
May	10.0 °C	20.4 °C	0.7 °C	138	1	3
Jun	13.5 °C	24.8 °C	4.4 °C	150	0	10
Jul	15.5 °C	26.1 °C	6.9 °C	170	0	13
Aug	15.7 °C	25.9 °C	6.5 °C	165	0	13
Sep	12.3 °C	22.4 °C	3.1 °C	130	0	3
Oct	9.5 °C	19.8 °C	−1.0 °C	115	3	0
Nov	5.0 °C	16.0 °C	−5.5 °C	120	13	0
Dec	2.2 °C	12.3 °C	−8.5 °C	166	23	0
Year	7.9 °C	26.1 °C	−10.0 °C	1681	114	42

Source: MeteoSwiss open data (1991–2020 normals) — stations Säntis (6 km, 2501 m), Ebnat-Kappel (16 km, 623 m), Vaduz (19 km, 457 m), adjusted to the elevation of Unterwasser (910 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.