About Sarnen
Sarnen is a Swiss municipality located in the canton of Obwalden (OW), at 46.917° latitude and 8.248° longitude. The municipality is part of the central Alps, pronounced alpine climate with heavy winter snowfall. Also known as Sarnen, Sarnen benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Sarnen
The climate in Sarnen is characteristic of the central Alps, pronounced alpine climate with heavy winter snowfall. Temperatures, precipitation and wind conditions vary throughout the year with local features linked to altitude and surrounding terrain. Our data comes from official weather stations and real-time Netatmo sensors for Sarnen and neighboring municipalities.
On this page you will find the detailed weather forecast for Sarnen: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Sarnen: 1991–2020 normals
In Sarnen (468 m), the mean annual temperature is 10.9 °C. The warmest month is August (18.8 °C on average) and the coldest February (3.8 °C). About 1220 mm of precipitation falls per year, peaking in August (119 mm) with a minimum in October (71 mm). The sun shines for about 1530 hours a year, mostly in July (209 h). On average there are 76 frost days and 9 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 29.8 °C and the absolute minimum −6.9 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Sunshine (h) | Frost days | Summer days |
|---|---|---|---|---|---|---|---|
| Jan | 4.0 °C | 14.7 °C | −6.7 °C | 100 | 51 | 21 | 0 |
| Feb | 3.8 °C | 15.5 °C | −6.9 °C | 100 | 80 | 19 | 0 |
| Mar | 6.3 °C | 17.9 °C | −4.5 °C | 98 | 133 | 10 | 0 |
| Apr | 9.3 °C | 20.9 °C | −1.1 °C | 108 | 162 | 2 | 1 |
| May | 13.2 °C | 25.0 °C | 3.6 °C | 109 | 173 | 0 | 4 |
| Jun | 16.7 °C | 28.4 °C | 7.3 °C | 117 | 187 | 0 | 12 |
| Jul | 18.7 °C | 29.8 °C | 9.8 °C | 118 | 209 | 0 | 16 |
| Aug | 18.8 °C | 29.3 °C | 9.4 °C | 119 | 198 | 0 | 14 |
| Sep | 15.2 °C | 25.4 °C | 6.1 °C | 80 | 146 | 0 | 3 |
| Oct | 12.3 °C | 23.4 °C | 1.9 °C | 71 | 99 | 1 | 0 |
| Nov | 7.7 °C | 19.3 °C | −2.6 °C | 88 | 53 | 7 | 0 |
| Dec | 4.9 °C | 15.8 °C | −5.7 °C | 111 | 39 | 18 | 0 |
| Year | 10.9 °C | 29.8 °C | −6.9 °C | 1220 | 1530 | 76 | 50 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Pilatus (7 km, 2105 m), Luzern (14 km, 454 m), Engelberg (16 km, 1036 m), adjusted to the elevation of Sarnen (468 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Sarnen:
- Weather Kerns
- Weather Alpnach
- Weather Schwarzenberg
- Weather Hergiswil (NW)
- Weather Ennetmoos
- Weather Sachseln
- Weather Stansstad
- Weather Stans
- Weather Dallenwil
- Weather Oberdorf (NW)
- Weather Engelberg
- Weather Wolfenschiessen
→ Nearby cities · Canton Obwalden
Frequently asked questions about weather in Sarnen
What is the weather in Sarnen today?
At the top of the page you will find the current temperature, precipitation and wind in Sarnen, updated in real time.
What is the 15-day forecast for Sarnen?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Sarnen.
Will it rain tomorrow in Sarnen?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Sarnen.
What is the air quality in Sarnen?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Sarnen.
Are there weather alerts for Sarnen?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Sarnen located?
Sarnen sits at around 468 m above sea level in the canton of Obwalden. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Sarnen?
The warmest month in Sarnen is August, averaging 18.8 °C (1991–2020 normal). The coldest is February at 3.8 °C.
How much does it rain in Sarnen per year?
Sarnen receives about 1220 mm of precipitation a year. The wettest month is August (119 mm), the driest October (71 mm).
When is the best time to visit Sarnen?
For warmth and sunshine: August (18.8 °C on average, 198 h of sun). The coldest month is February (3.8 °C). Check the 15-day forecast above for your dates.