What is the weather in Ermensee today?

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

What is the 15-day forecast for Ermensee?

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

Will it rain tomorrow in Ermensee?

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

What is the air quality in Ermensee?

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

Are there weather alerts for Ermensee?

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

At what altitude is Ermensee located?

Ermensee sits at around 472 m above sea level in the canton of Lucerne. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Ermensee?

The warmest month in Ermensee is July, averaging 19.2 °C (1991–2020 normal). The coldest is January at 1.0 °C.

How much does it rain in Ermensee per year?

Ermensee receives about 1082 mm of precipitation a year. The wettest month is August (134 mm), the driest February (55 mm).

When is the best time to visit Ermensee?

For warmth and sunshine: July (19.2 °C on average, 217 h of sun). The coldest month is January (1.0 °C). Check the 15-day forecast above for your dates.

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Weather in Ermensee

Lucerne, 472 m · continuously updated

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

Temperature · last 4 and next 28 hours

Ermensee weather: the next 24 hours

Updated hourly.

Ermensee weather hour by hour (48 h)

Ermensee 15-day forecast

Two-week trend.

Ermensee 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 Ermensee

Neighbouring municipalities, as the crow flies.

Hitzkirch3 km Aesch (LU)4 km Menziken5 km Schongau5 km Beinwil am See5 km Beromünster6 km Rickenbach (LU)6 km Reinach (AG)6 km

7-day forecast for Ermensee

Today (Sunday 27 Sep) in Ermensee: mostly sunny, 11 to 26 °C, precipitation 0.0 mm (0 %), wind up to 8 km/h. Tomorrow: overcast, 15 to 26 °C.

Day	Weather	Min	Max	Precip.	Wind
Today	mostly sunny	11 °C	26 °C	0.0 mm	8 km/h
Tomorrow	overcast	15 °C	26 °C	0.0 mm	6 km/h
Tue 29 Sep	overcast	16 °C	26 °C	0.0 mm	6 km/h
Wed 30 Sep	overcast	17 °C	24 °C	0.0 mm	7 km/h
Thu 1 Oct	light rain	15 °C	18 °C	3.6 mm	5 km/h
Fri 2 Oct	fog	14 °C	20 °C	0.0 mm	9 km/h
Sat 3 Oct	fog	14 °C	21 °C	0.0 mm	4 km/h

Forecast updated on 27.09.2026 at 04:37 (Open-Meteo model, elevation 472 m). The interactive block at the top refreshes hourly and covers 16 days.

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

Hourly weather in Ermensee

Sunday 27 Sep in Ermensee, hour by hour: sunny in the morning, sunny in the afternoon, sunny in the evening. Low 12 °C around 07:00, high 26 °C around 15:00. No rainy hour.

Show the 24-hour table

Time	Weather	Temp.	Wind
00:00	sunny	16 °C	5 km/h
01:00	sunny	15 °C	4 km/h
02:00	sunny	15 °C	4 km/h
03:00	sunny	14 °C	5 km/h
04:00	sunny	14 °C	5 km/h
05:00	sunny	14 °C	4 km/h
06:00	sunny	13 °C	5 km/h
07:00	sunny	12 °C	5 km/h
08:00	sunny	12 °C	5 km/h
09:00	sunny	14 °C	2 km/h
10:00	sunny	17 °C	2 km/h
11:00	sunny	19 °C	2 km/h
12:00	sunny	21 °C	2 km/h
13:00	mostly sunny	24 °C	3 km/h
14:00	sunny	25 °C	2 km/h
15:00	sunny	26 °C	2 km/h
16:00	sunny	26 °C	5 km/h
17:00	mostly sunny	26 °C	7 km/h
18:00	sunny	25 °C	7 km/h
19:00	sunny	22 °C	6 km/h
20:00	sunny	18 °C	6 km/h
21:00	sunny	17 °C	5 km/h
22:00	sunny	17 °C	5 km/h
23:00	mostly sunny	16 °C	5 km/h

Hourly forecast issued 27.09.2026 for Ermensee (472 m), Swiss local time, Open-Meteo model. The interactive block at the top of the page covers 16 days and refreshes every hour.

Ermensee weather tomorrow

Tomorrow, Monday 28 Sep, in Ermensee: overcast, 15 to 26 °C, wind up to 6 km/h. No precipitation expected.

Ermensee weekend weather

This weekend in Ermensee: Saturday fog, 14 to 21 °C; Sunday mostly sunny, 11 to 26 °C.

Will it rain in Ermensee this week?

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

The best day to go out in Ermensee

The best day of the next 7 in Ermensee: Sunday 27 Sep, mostly sunny, up to 26 °C.

The last 7 days in Ermensee

From 20 Sep to 26 Sep: 15.8 °C on average, 1.2 °C above the September normal (14.6 °C), 0 mm of precipitation (7-day normal: 21 mm). Warmest day: saturday 26 Sep (25 °C); coolest night: wednesday 23 Sep (7 °C).

Day	Min	Max
Sun 20 Sep	11 °C	25 °C
Mon 21 Sep	13 °C	20 °C
Tue 22 Sep	8 °C	20 °C
Wed 23 Sep	7 °C	22 °C
Thu 24 Sep	10 °C	21 °C
Fri 25 Sep	8 °C	21 °C
Sat 26 Sep	10 °C	25 °C

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

Climate of Ermensee: 1991–2020 normals

In Ermensee (472 m), the mean annual temperature is 9.9 °C. The warmest month is July (19.2 °C on average) and the coldest January (1.0 °C). About 1082 mm of precipitation falls per year, peaking in August (134 mm) with a minimum in February (55 mm). The sun shines for about 1539 hours a year, mostly in July (217 h). On average there are 76 frost days and 12 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.1 °C and the absolute minimum −8.2 °C.

9.9 °CMean annual temperature

1082 mmPrecipitation per year

1539 hSunshine hours per year

76Frost days per year

53Summer days (≥ 25 °C)

JFMAMJJASOND

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	1.0 °C	11.6 °C	−8.2 °C	56	46	20	0
Feb	1.8 °C	13.6 °C	−7.9 °C	55	77	18	0
Mar	5.8 °C	19.0 °C	−4.7 °C	62	133	10	0
Apr	9.8 °C	23.4 °C	−1.4 °C	80	165	2	1
May	13.9 °C	27.6 °C	3.0 °C	125	178	0	4
Jun	17.6 °C	31.2 °C	7.1 °C	126	196	0	12
Jul	19.2 °C	32.1 °C	9.4 °C	131	217	0	16
Aug	18.8 °C	31.4 °C	8.7 °C	134	203	0	15
Sep	14.6 °C	26.6 °C	4.8 °C	89	148	0	4
Oct	10.1 °C	21.8 °C	0.6 °C	80	93	1	0
Nov	4.9 °C	15.9 °C	−3.9 °C	69	48	8	0
Dec	1.7 °C	12.2 °C	−8.1 °C	76	35	17	0
Year	9.9 °C	32.1 °C	−8.2 °C	1082	1539	76	53

Source: MeteoSwiss open data (1991–2020 normals) — stations Cham (18 km, 443 m), Buchs / Aarau (21 km, 387 m), Luzern (21 km, 454 m), adjusted to the elevation of Ermensee (472 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.