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Weather in Lake Hallwil

Aargau, Lucerne, 449 m · continuously updated

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Lake water: 11.2 °C at the surface Simstrat model · Alplakes, Eawag · 14.11. 11h

Temperature · last 4 and next 28 hours

Lake Hallwil weather: the next 24 hours

Updated hourly.

Lake Hallwil 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 Hallwil

Neighbouring municipalities, as the crow flies.

7-day forecast for Lake Hallwil

Today (Saturday 14 Nov) in Lake Hallwil: fog, 0 to 6 °C, precipitation 0.0 mm (0 %), wind up to 5 km/h. Tomorrow: light rain, 2 to 12 °C.

Show the 7-day table
DayWeatherMinMaxPrecip.Wind
Todayfog0 °C6 °C0.0 mm5 km/h
Tomorrowlight rain2 °C12 °C3.0 mm9 km/h
Mon 16 Novshowers8 °C11 °C9.6 mm30 km/h
Tue 17 Novlight rain8 °C16 °C4.0 mm38 km/h
Wed 18 Novshowers11 °C13 °C3.3 mm37 km/h
Thu 19 Novlight rain9 °C15 °C5.1 mm33 km/h
Fri 20 Novlight rain2 °C9 °C4.2 mm34 km/h

Forecast updated on 14.11.2026 at 11:18 (Open-Meteo model, elevation 449 m). The interactive block at the top refreshes hourly and covers 16 days.

No rain expected today in Lake Hallwil. Tomorrow: rain from 06:00 to 10:00. The 15-minute detail for the next two hours is shown on demand.

Hourly weather in Lake Hallwil

Saturday 14 Nov in Lake Hallwil, hour by hour: mostly sunny in the morning, mostly sunny in the afternoon, fog in the evening. Low 0 °C around 08:00, high 6 °C around 16:00. No rainy hour.

Show the 24-hour table
TimeWeatherTemp.Precip.Wind
00:00sunny2 °C0.0 mm5 km/h
01:00sunny2 °C0.0 mm4 km/h
02:00sunny2 °C0.0 mm5 km/h
03:00sunny2 °C0.0 mm5 km/h
04:00sunny1 °C0.0 mm4 km/h
05:00sunny1 °C0.0 mm4 km/h
06:00sunny1 °C0.0 mm3 km/h
07:00sunny0 °C0.0 mm0 km/h
08:00mostly sunny0 °C0.0 mm2 km/h
09:00mostly sunny1 °C0.0 mm2 km/h
10:00mostly sunny2 °C0.0 mm2 km/h
11:00partly cloudy3 °C0.0 mm1 km/h
12:00overcast4 °C0.0 mm2 km/h
13:00partly cloudy4 °C0.0 mm2 km/h
14:00partly cloudy5 °C0.0 mm2 km/h
15:00mostly sunny5 °C0.0 mm2 km/h
16:00sunny6 °C0.0 mm1 km/h
17:00mostly sunny6 °C0.0 mm2 km/h
18:00mostly sunny3 °C0.0 mm4 km/h
19:00fog3 °C0.0 mm2 km/h
20:00overcast3 °C0.0 mm1 km/h
21:00fog2 °C0.0 mm0 km/h
22:00fog2 °C0.0 mm1 km/h
23:00fog2 °C0.0 mm2 km/h

Hourly forecast issued 14.11.2026 for Lake Hallwil (449 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 Hallwil

Today, Saturday 14 Nov in Lake Hallwil: fog, 0 to 6 °C, wind up to 5 km/h. No precipitation expected.

Lake Hallwil weather tomorrow

Tomorrow, Sunday 15 Nov, in Lake Hallwil: light rain, 2 to 12 °C, wind up to 9 km/h. Precipitation expected: 3.0 mm, 37 % probability.

What is the temperature in Lake Hallwil?

Today in Lake Hallwil (449 m): 0 to 6 °C. Tomorrow: 2 to 12 °C. Over the next 7 days, highs range from 6 to 16 °C, averaging 12 °C.

Lake Hallwil weekend weather

This weekend in Lake Hallwil: Saturday fog, 0 to 6 °C; Sunday light rain, 2 to 12 °C.

Will it rain in Lake Hallwil this week?

Yes: 6 days with precipitation are expected in Lake Hallwil over the next 7 days, 29.2 mm in total. Wettest day: Monday 16 Nov (9.6 mm).

What is the UV index in Lake Hallwil?

Today in Lake Hallwil (449 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 Hallwil

The best day of the next 7 in Lake Hallwil: Saturday 14 Nov, fog, up to 6 °C.

Climate of Lake Hallwil: 1991–2020 normals

In Lake Hallwil (449 m), the mean annual temperature is 9.8 °C. The warmest month is July (19.2 °C on average) and the coldest January (1.0 °C). About 1008 mm of precipitation falls per year, peaking in August (114 mm) with a minimum in February (56 mm). The sun shines for about 1549 hours a year, mostly in July (225 h). On average there are 77 frost days and 13 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.6 °C and the absolute minimum −8.7 °C.

9.8 °CMean annual temperature
1008 mmPrecipitation per year
1549 hSunshine hours per year
77Frost days per year
55Summer days (≥ 25 °C)
JFMAMJJASOND

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

MonthMean TAbs. maxAbs. minPrecip. (mm)Sunshine (h)Frost daysSummer days
Jan1.0 °C11.2 °C−8.7 °C6441200
Feb1.7 °C13.5 °C−8.2 °C5674180
Mar5.7 °C18.9 °C−4.9 °C63133110
Apr9.6 °C23.5 °C−1.6 °C7316921
May13.8 °C27.6 °C2.7 °C11018305
Jun17.5 °C31.3 °C6.6 °C106205012
Jul19.2 °C32.6 °C9.0 °C113225017
Aug18.6 °C31.6 °C8.4 °C114208015
Sep14.4 °C26.7 °C4.4 °C7915105
Oct10.0 °C21.6 °C0.4 °C788610
Nov4.8 °C15.4 °C−4.0 °C714380
Dec1.7 °C11.8 °C−7.9 °C8231170
Year9.8 °C32.6 °C−8.7 °C100815497755

Can you swim in Lake Hallwil?

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 Hallwil?

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

What is the warmest month in Lake Hallwil?

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

How much does it rain in Lake Hallwil per year?

Lake Hallwil receives about 1008 mm of precipitation a year. The wettest month is August (114 mm), the driest February (56 mm).

When is the best time to visit Lake Hallwil?

For warmth and sunshine: July (19.2 °C on average, 225 h of sun). The coldest month is January (1.0 °C). Check the 15-day forecast above for your dates.

Source: MeteoSwiss open data (1991–2020 normals) — stations Buchs / Aarau (16 km, 387 m), Gösgen (21 km, 380 m), Cham (21 km, 443 m), adjusted to the elevation of Lake Hallwil (449 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.