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Weather in Lake Sarnen

Obwalden, 469 m · continuously updated

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Lake water: 10.0 °C at the surface Simstrat model · Alplakes, Eawag · 14.11. 11h

Temperature · last 4 and next 28 hours

Lake Sarnen weather: the next 24 hours

Updated hourly.

Lake Sarnen 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 Lake Sarnen

Neighbouring municipalities, as the crow flies.

7-day forecast for Lake Sarnen

Today (Saturday 14 Nov) in Lake Sarnen: fog, 2 to 7 °C, precipitation 0.0 mm (0 %), wind up to 7 km/h. Tomorrow: showers, 7 to 12 °C.

Show the 7-day table
DayWeatherMinMaxPrecip.Wind
Todayfog2 °C7 °C0.0 mm7 km/h
Tomorrowshowers7 °C12 °C0.5 mm8 km/h
Mon 16 Novshowers8 °C10 °C4.4 mm13 km/h
Tue 17 Novrain10 °C15 °C9.2 mm21 km/h
Wed 18 Novlight rain10 °C13 °C4.2 mm25 km/h
Thu 19 Novshowers9 °C15 °C6.2 mm22 km/h
Fri 20 Novshowers3 °C9 °C7.0 mm12 km/h

Forecast updated on 14.11.2026 at 11:18 (Open-Meteo model, elevation 469 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected today in Lake Sarnen. Tomorrow: rain from 06:00 to 11:00. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Lake Sarnen

Saturday 14 Nov in Lake Sarnen, hour by hour: mostly sunny in the morning, mostly sunny in the afternoon, overcast in the evening. Low 2 °C around 08:00, high 7 °C around 23:00. No rainy hour.

Show the 24-hour table
TimeWeatherTemp.Precip.Wind
00:00partly cloudy5 °C0.0 mm4 km/h
01:00partly cloudy4 °C0.0 mm3 km/h
02:00partly cloudy3 °C0.0 mm5 km/h
03:00partly cloudy3 °C0.0 mm4 km/h
04:00partly cloudy3 °C0.0 mm2 km/h
05:00partly cloudy3 °C0.0 mm1 km/h
06:00mostly sunny2 °C0.0 mm2 km/h
07:00mostly sunny2 °C0.0 mm2 km/h
08:00mostly sunny2 °C0.0 mm3 km/h
09:00fog2 °C0.0 mm2 km/h
10:00fog2 °C0.0 mm0 km/h
11:00mostly sunny3 °C0.0 mm1 km/h
12:00partly cloudy4 °C0.0 mm2 km/h
13:00partly cloudy4 °C0.0 mm1 km/h
14:00mostly sunny5 °C0.0 mm1 km/h
15:00mostly sunny6 °C0.0 mm1 km/h
16:00mostly sunny6 °C0.0 mm1 km/h
17:00mostly sunny5 °C0.0 mm3 km/h
18:00fog4 °C0.0 mm3 km/h
19:00overcast5 °C0.0 mm3 km/h
20:00overcast5 °C0.0 mm2 km/h
21:00partly cloudy6 °C0.0 mm6 km/h
22:00overcast6 °C0.0 mm7 km/h
23:00overcast7 °C0.0 mm7 km/h

Hourly forecast issued 14.11.2026 for Lake Sarnen (469 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Weather today in Lake Sarnen

Today, Saturday 14 Nov in Lake Sarnen: fog, 2 to 7 °C, wind up to 7 km/h. No precipitation expected.

Lake Sarnen weather tomorrow

Tomorrow, Sunday 15 Nov, in Lake Sarnen: showers, 7 to 12 °C, wind up to 8 km/h. Precipitation expected: 0.5 mm, 23 % probability.

What is the temperature in Lake Sarnen?

Today in Lake Sarnen (469 m): 2 to 7 °C. Tomorrow: 7 to 12 °C. Over the next 7 days, highs range from 7 to 15 °C, averaging 11 °C.

Lake Sarnen weekend weather

This weekend in Lake Sarnen: Saturday fog, 2 to 7 °C; Sunday showers, 7 to 12 °C.

Will it rain in Lake Sarnen this week?

Yes: 5 days with precipitation are expected in Lake Sarnen over the next 7 days, 31.5 mm in total. Wettest day: Tuesday 17 Nov (9.2 mm).

What is the UV index in Lake Sarnen?

Today in Lake Sarnen (469 m), the UV index peaks at 2 (low) around midday. No particular protection is needed. 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 Lake Sarnen

The best day of the next 7 in Lake Sarnen: Saturday 14 Nov, fog, up to 7 °C.

Climate of Lake Sarnen: 1991–2020 normals

In Lake Sarnen (469 m), the mean annual temperature is 10.4 °C. The warmest month is July (18.6 °C on average) and the coldest January (2.7 °C). About 1266 mm of precipitation falls per year, peaking in August (138 mm) with a minimum in October (79 mm). On average there are 101 frost days and 6 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 30.4 °C and the absolute minimum −8.7 °C.

10.4 °CMean annual temperature
1266 mmPrecipitation per year
101Frost days per year
42Summer days (≥ 25 °C)
JFMAMJJASOND

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

MonthMean TAbs. maxAbs. minPrecip. (mm)Frost daysSummer days
Jan2.7 °C14.1 °C−8.7 °C95250
Feb3.0 °C14.8 °C−8.3 °C90220
Mar6.1 °C18.3 °C−5.3 °C94140
Apr9.4 °C21.7 °C−1.5 °C10240
May13.4 °C25.9 °C3.1 °C11904
Jun16.8 °C29.3 °C6.8 °C127010
Jul18.6 °C30.4 °C9.4 °C134014
Aug18.5 °C29.8 °C8.9 °C138012
Sep14.9 °C25.7 °C5.4 °C9002
Oct11.6 °C23.3 °C1.2 °C7920
Nov6.7 °C19.3 °C−3.9 °C91120
Dec3.5 °C15.3 °C−7.5 °C107230
Year10.4 °C30.4 °C−8.7 °C126610142

Can you swim in Lake Sarnen?

In summer (June to September) lowland lakes usually reach 18–24 °C at the surface; there are many public beaches and lidos. Check the air temperature, sunshine and UV index above to pick your slot.

What are the typical winds on Lake Sarnen?

Characteristic winds: Föhn, Westwind. Storm warnings on Swiss lakes are signalled by flashing lights (40 flashes/min = caution, 90 = storm).

What is the warmest month in Lake Sarnen?

The warmest month in Lake Sarnen is July, averaging 18.6 °C (1991–2020 normal). The coldest is January at 2.7 °C.

How much does it rain in Lake Sarnen per year?

Lake Sarnen receives about 1266 mm of precipitation a year. The wettest month is August (138 mm), the driest October (79 mm).

When is the best time to visit Lake Sarnen?

For warmth and sunshine: July (18.6 °C on average, — h of sun). The coldest month is January (2.7 °C). Check the 15-day forecast above for your dates.

Source: MeteoSwiss open data (1991–2020 normals) — stations Pilatus (12 km, 2105 m), Engelberg (15 km, 1036 m), Meiringen (16 km, 589 m), adjusted to the elevation of Lake Sarnen (469 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.