About Hallwil
Hallwil is a Swiss municipality located in the canton of Aargau (AG), at 47.328° latitude and 8.177° longitude. The municipality is part of the Swiss plateau, transitional temperate oceanic climate with four distinct seasons. Also known as Hallwil, Hallwil benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Hallwil
The climate in Hallwil is characteristic of the Swiss plateau, transitional temperate oceanic climate with four distinct seasons. 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 Hallwil and neighboring municipalities.
On this page you will find the detailed weather forecast for Hallwil: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Hallwil: 1991–2020 normals
In Hallwil (472 m), the mean annual temperature is 9.6 °C. The warmest month is July (18.9 °C on average) and the coldest January (0.8 °C). About 1014 mm of precipitation falls per year, peaking in July (108 mm) with a minimum in February (60 mm). The sun shines for about 1549 hours a year, mostly in July (225 h). On average there are 77 frost days and 15 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.7 °C and the absolute minimum −9.1 °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 | 0.8 °C | 11.0 °C | −9.1 °C | 72 | 41 | 19 | 0 |
| Feb | 1.5 °C | 13.3 °C | −8.4 °C | 60 | 74 | 18 | 0 |
| Mar | 5.4 °C | 18.8 °C | −5.1 °C | 69 | 133 | 12 | 0 |
| Apr | 9.4 °C | 23.5 °C | −1.8 °C | 72 | 169 | 3 | 1 |
| May | 13.5 °C | 27.5 °C | 2.4 °C | 106 | 183 | 0 | 5 |
| Jun | 17.2 °C | 31.2 °C | 6.2 °C | 99 | 205 | 0 | 13 |
| Jul | 18.9 °C | 32.7 °C | 8.6 °C | 108 | 225 | 0 | 18 |
| Aug | 18.3 °C | 31.6 °C | 8.0 °C | 107 | 208 | 0 | 16 |
| Sep | 14.1 °C | 26.5 °C | 4.0 °C | 76 | 151 | 0 | 5 |
| Oct | 9.7 °C | 21.3 °C | 0.1 °C | 80 | 86 | 1 | 0 |
| Nov | 4.6 °C | 15.0 °C | −4.1 °C | 77 | 43 | 8 | 0 |
| Dec | 1.5 °C | 11.4 °C | −7.7 °C | 90 | 31 | 16 | 0 |
| Year | 9.6 °C | 32.7 °C | −9.1 °C | 1014 | 1549 | 77 | 57 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Buchs / Aarau (10 km, 387 m), Gösgen (16 km, 380 m), Würenlingen / PSI (23 km, 334 m), adjusted to the elevation of Hallwil (472 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Hallwil:
- Weather Leutwil
- Weather Dürrenäsch
- Weather Boniswil
- Weather Seengen
- Weather Seon
- Weather Egliswil
- Weather Teufenthal (AG)
- Weather Birrwil
- Weather Zetzwil
- Weather Ammerswil
- Weather Dintikon
- Weather Oberkulm
→ Nearby cities · Canton Aargau
Frequently asked questions about weather in Hallwil
What is the weather in Hallwil today?
At the top of the page you will find the current temperature, precipitation and wind in Hallwil, updated in real time.
What is the 15-day forecast for Hallwil?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Hallwil.
Will it rain tomorrow in Hallwil?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Hallwil.
What is the air quality in Hallwil?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Hallwil.
Are there weather alerts for Hallwil?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Hallwil located?
Hallwil sits at around 472 m above sea level in the canton of Aargau. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Hallwil?
The warmest month in Hallwil is July, averaging 18.9 °C (1991–2020 normal). The coldest is January at 0.8 °C.
How much does it rain in Hallwil per year?
Hallwil receives about 1014 mm of precipitation a year. The wettest month is July (108 mm), the driest February (60 mm).
When is the best time to visit Hallwil?
For warmth and sunshine: July (18.9 °C on average, 225 h of sun). The coldest month is January (0.8 °C). Check the 15-day forecast above for your dates.