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Weather Lyss

7-day forecast for Lyss

Today (Thursday 20 Aug) in Lyss: thunderstorms, 18 to 27 °C, precipitation 3.3 mm (78 %), wind up to 22 km/h. Tomorrow: thunderstorms with hail, 16 to 19 °C.

DayWeatherMinMaxPrecip.Wind
Todaythunderstorms18 °C27 °C3.3 mm22 km/h
Tomorrowthunderstorms with hail16 °C19 °C43.3 mm10 km/h
Sat 22 Augthunderstorms13 °C22 °C1.9 mm10 km/h
Sun 23 Augovercast12 °C24 °C0.0 mm16 km/h
Mon 24 Augovercast14 °C27 °C0.0 mm12 km/h
Tue 25 Augshowers18 °C26 °C1.6 mm10 km/h
Wed 26 Augfog15 °C30 °C0.0 mm6 km/h

Forecast updated on 20.08.2026 at 15:41 (Open-Meteo model, elevation 447 m). The interactive block at the top refreshes hourly and covers 16 days.

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About Lyss

Lyss is a Swiss municipality located in the canton of Bern (BE), at 47.110° latitude and 7.316° longitude. The municipality is part of the Swiss plateau, transitional temperate oceanic climate with four distinct seasons. Also known as Lyss, Lyss benefits from precise weather monitoring with hourly and 15-day forecasts.

447m Elevation
Lowland Zone
Snow & altitude climate In the lowlands winters are mild to cool with little lasting snow, sometimes persistent fog in autumn and winter.

Climate of Lyss

The climate in Lyss 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 Lyss and neighboring municipalities.

On this page you will find the detailed weather forecast for Lyss: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.

Climate of Lyss: 1991–2020 normals

In Lyss (447 m), the mean annual temperature is 9.8 °C. The warmest month is July (19.1 °C on average) and the coldest January (0.8 °C). About 984 mm of precipitation falls per year, peaking in August (106 mm) with a minimum in February (54 mm). The sun shines for about 1796 hours a year, mostly in July (245 h). On average there are 93 frost days and 12 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 32.2 °C and the absolute minimum −9.6 °C.

9.8 °CMean annual temperature
984 mmPrecipitation per year
1796 hSunshine hours per year
93Frost days per year
51Summer 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
Jan0.8 °C10.9 °C−9.6 °C5866220
Feb1.7 °C13.1 °C−8.5 °C5494200
Mar5.6 °C18.8 °C−5.3 °C62151150
Apr9.4 °C23.1 °C−1.8 °C7417950
May13.6 °C27.2 °C2.4 °C10619704
Jun17.3 °C30.7 °C6.1 °C100223011
Jul19.1 °C32.2 °C8.7 °C106245017
Aug18.7 °C31.5 °C7.8 °C106228015
Sep14.4 °C26.3 °C4.2 °C8217504
Oct10.0 °C21.0 °C0.0 °C8511920
Nov4.8 °C15.2 °C−4.6 °C7466100
Dec1.6 °C11.4 °C−8.2 °C7853190
Year9.8 °C32.2 °C−9.6 °C98417969351

Source: MeteoSwiss open data (1991–2020 normals) — stations Grenchen (11 km, 428 m), Mühleberg (15 km, 480 m), Bern / Zollikofen (17 km, 553 m), adjusted to the elevation of Lyss (447 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.

Nearby cities

Check the weather of cities near Lyss:

Frequently asked questions about weather in Lyss

What is the weather in Lyss today?

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

What is the 15-day forecast for Lyss?

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

Will it rain tomorrow in Lyss?

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

What is the air quality in Lyss?

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

Are there weather alerts for Lyss?

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

At what altitude is Lyss located?

Lyss sits at around 447 m above sea level in the canton of Bern. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.

What is the warmest month in Lyss?

The warmest month in Lyss is July, averaging 19.1 °C (1991–2020 normal). The coldest is January at 0.8 °C.

How much does it rain in Lyss per year?

Lyss receives about 984 mm of precipitation a year. The wettest month is August (106 mm), the driest February (54 mm).

When is the best time to visit Lyss?

For warmth and sunshine: July (19.1 °C on average, 245 h of sun). The coldest month is January (0.8 °C). Check the 15-day forecast above for your dates.