What is the weather in Gersau today?

At the top of the page you will find the current temperature, precipitation and wind in Gersau, updated in real time.

What is the 15-day forecast for Gersau?

The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Gersau.

Will it rain tomorrow in Gersau?

Check the 48-hour hourly forecast to see exactly when precipitation is expected in Gersau.

What is the air quality in Gersau?

The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Gersau.

Are there weather alerts for Gersau?

Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.

At what altitude is Gersau located?

Gersau sits at around 863 m above sea level in the canton of Schwyz. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Gersau?

The warmest month in Gersau is July, averaging 17.1 °C (1991–2020 normal). The coldest is January at −0.9 °C.

How much does it rain in Gersau per year?

Gersau receives about 1274 mm of precipitation a year. The wettest month is August (165 mm), the driest February (62 mm).

When is the best time to visit Gersau?

For warmth and sunshine: July (17.1 °C on average, — h of sun). The coldest month is January (−0.9 °C). Check the 15-day forecast above for your dates.

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Home › Schwyz › Gersau

Weather in Gersau

Schwyz, 863 m · continuously updated

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

Temperature · last 4 and next 28 hours

Gersau weather: the next 24 hours

Updated hourly.

Gersau weather hour by hour (48 h)

Gersau 15-day forecast

Two-week trend.

Gersau weekend weather 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 Gersau

Neighbouring municipalities, as the crow flies.

Vitznau2 km Lauerz5 km Steinerberg6 km Ingenbohl7 km Greppen7 km Weggis7 km Arth7 km Seelisberg7 km

7-day forecast for Gersau

Today (Sunday 27 Sep) in Gersau: mostly sunny, 14 to 21 °C, precipitation 0.0 mm (0 %), wind up to 4 km/h. Tomorrow: overcast, 16 to 22 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	mostly sunny	14 °C	21 °C	0.0 mm	4 km/h
Tomorrow	overcast	16 °C	22 °C	0.0 mm	8 km/h
Tue 29 Sep	overcast	15 °C	22 °C	0.0 mm	8 km/h
Wed 30 Sep	overcast	18 °C	22 °C	0.0 mm	9 km/h
Thu 1 Oct	light rain	15 °C	17 °C	3.0 mm	4 km/h
Fri 2 Oct	showers	13 °C	17 °C	0.6 mm	8 km/h
Sat 3 Oct	fog	13 °C	19 °C	0.0 mm	6 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 863 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected in Gersau today or tomorrow. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Gersau

Sunday 27 Sep in Gersau, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 14 °C around 07:00, high 22 °C around 17:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	16 °C	3 km/h
01:00	sunny	16 °C	3 km/h
02:00	sunny	15 °C	3 km/h
03:00	sunny	15 °C	3 km/h
04:00	sunny	15 °C	3 km/h
05:00	sunny	15 °C	2 km/h
06:00	sunny	15 °C	3 km/h
07:00	sunny	14 °C	3 km/h
08:00	sunny	15 °C	2 km/h
09:00	sunny	17 °C	1 km/h
10:00	sunny	19 °C	1 km/h
11:00	sunny	19 °C	2 km/h
12:00	sunny	19 °C	2 km/h
13:00	sunny	20 °C	3 km/h
14:00	sunny	20 °C	3 km/h
15:00	mostly sunny	21 °C	3 km/h
16:00	mostly sunny	22 °C	2 km/h
17:00	mostly sunny	22 °C	2 km/h
18:00	sunny	21 °C	2 km/h
19:00	sunny	20 °C	3 km/h
20:00	sunny	19 °C	3 km/h
21:00	sunny	18 °C	5 km/h
22:00	sunny	18 °C	4 km/h
23:00	sunny	18 °C	3 km/h

Hourly forecast issued 27.09.2026 for Gersau (863 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Gersau weather tomorrow

Tomorrow, Monday 28 Sep, in Gersau: overcast, 16 to 22 °C, wind up to 8 km/h. No precipitation expected.

Gersau weekend weather

This weekend in Gersau: Saturday fog, 13 to 19 °C; Sunday mostly sunny, 14 to 21 °C.

Will it rain in Gersau this week?

Yes: 1 day with precipitation is expected in Gersau over the next 7 days, 3.6 mm in total. Wettest day: Thursday 1 Oct (3.0 mm).

The best day to go out in Gersau

The best day of the next 7 in Gersau: Sunday 27 Sep, mostly sunny, up to 21 °C.

The last 7 days in Gersau

From 20 Sep to 26 Sep: 14.5 °C on average, 1.9 °C above the September normal (12.6 °C), 0 mm of precipitation (7-day normal: 26 mm). Warmest day: saturday 26 Sep (21 °C); coolest night: tuesday 22 Sep (8 °C).

Day	Min	Max
Sun 20 Sep	12 °C	20 °C
Mon 21 Sep	12 °C	17 °C
Tue 22 Sep	8 °C	17 °C
Wed 23 Sep	8 °C	17 °C
Thu 24 Sep	14 °C	17 °C
Fri 25 Sep	9 °C	17 °C
Sat 26 Sep	12 °C	21 °C

Open-Meteo analyses of the last 7 days (models and assimilated observations), MeteoSwiss 1991–2020 normals. Updated nightly.

Climate of Gersau: 1991–2020 normals

In Gersau (863 m), the mean annual temperature is 8.0 °C. The warmest month is July (17.1 °C on average) and the coldest January (−0.9 °C). About 1274 mm of precipitation falls per year, peaking in August (165 mm) with a minimum in February (62 mm). The mean monthly maximum reaches 29.5 °C and the absolute minimum −10.0 °C.

8.0 °CMean annual temperature

1274 mmPrecipitation per year

JFMAMJJASOND

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

Month	Mean T	Abs. max	Abs. min	Precip. (mm)
Jan	−0.9 °C	10.5 °C	−10.0 °C	64
Feb	−0.1 °C	11.7 °C	−9.8 °C	62
Mar	3.8 °C	17.0 °C	−6.7 °C	73
Apr	7.8 °C	21.1 °C	−3.4 °C	93
May	11.9 °C	25.4 °C	1.1 °C	141
Jun	15.4 °C	28.8 °C	5.2 °C	155
Jul	17.1 °C	29.5 °C	7.6 °C	158
Aug	16.6 °C	28.7 °C	6.8 °C	165
Sep	12.6 °C	24.2 °C	3.1 °C	109
Oct	8.3 °C	20.1 °C	−1.4 °C	90
Nov	3.1 °C	15.0 °C	−6.0 °C	80
Dec	−0.2 °C	11.2 °C	−9.8 °C	84
Year	8.0 °C	29.5 °C	−10.0 °C	1274

Source: MeteoSwiss open data (1991–2020 normals) — stations Luzern (17 km, 454 m), Altdorf (17 km, 438 m), Cham (18 km, 443 m), adjusted to the elevation of Gersau (863 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.