About Sissach
Sissach is a Swiss municipality located in the canton of Basel-Country (BL), at 47.473° latitude and 7.806° longitude. The municipality is part of the Rhine valley, mild climate for Switzerland thanks to low elevation. Also known as Sissach, Sissach benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Sissach
The climate in Sissach is characteristic of the Rhine valley, mild climate for Switzerland thanks to low elevation. 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 Sissach and neighboring municipalities.
On this page you will find the detailed weather forecast for Sissach: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Sissach: 1991–2020 normals
In Sissach (444 m), the mean annual temperature is 10.3 °C. The warmest month is July (19.2 °C on average) and the coldest January (1.7 °C). About 944 mm of precipitation falls per year, peaking in May (106 mm) with a minimum in February (49 mm). The sun shines for about 1697 hours a year, mostly in July (233 h). On average there are 73 frost days and 5 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 31.5 °C and the absolute minimum −8.1 °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 | 1.7 °C | 12.6 °C | −8.1 °C | 55 | 65 | 18 | 0 |
| Feb | 2.6 °C | 14.0 °C | −7.1 °C | 49 | 87 | 16 | 0 |
| Mar | 6.3 °C | 18.8 °C | −3.9 °C | 58 | 138 | 9 | 0 |
| Apr | 10.0 °C | 22.9 °C | −0.7 °C | 72 | 170 | 3 | 0 |
| May | 13.8 °C | 26.8 °C | 3.8 °C | 106 | 189 | 0 | 2 |
| Jun | 17.3 °C | 30.0 °C | 7.5 °C | 98 | 212 | 0 | 7 |
| Jul | 19.2 °C | 31.5 °C | 10.2 °C | 105 | 233 | 0 | 12 |
| Aug | 18.9 °C | 30.5 °C | 9.5 °C | 105 | 216 | 0 | 10 |
| Sep | 14.8 °C | 25.6 °C | 6.0 °C | 79 | 161 | 0 | 2 |
| Oct | 10.6 °C | 21.7 °C | 1.7 °C | 76 | 104 | 1 | 0 |
| Nov | 5.6 °C | 16.3 °C | −2.8 °C | 71 | 66 | 8 | 0 |
| Dec | 2.5 °C | 13.1 °C | −6.6 °C | 72 | 56 | 17 | 0 |
| Year | 10.3 °C | 31.5 °C | −8.1 °C | 944 | 1697 | 73 | 33 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Rünenberg (7 km, 611 m), St. Chrischona (14 km, 493 m), Gösgen (18 km, 380 m), adjusted to the elevation of Sissach (444 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Sissach:
- Weather Itingen
- Weather Böckten
- Weather Nusshof
- Weather Hersberg
- Weather Thürnen
- Weather Lausen
- Weather Wintersingen
- Weather Zunzgen
- Weather Rickenbach (BL)
- Weather Ramlinsburg
- Weather Diepflingen
- Weather Buus
→ Nearby cities · Canton Basel-Country
Frequently asked questions about weather in Sissach
What is the weather in Sissach today?
At the top of the page you will find the current temperature, precipitation and wind in Sissach, updated in real time.
What is the 15-day forecast for Sissach?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Sissach.
Will it rain tomorrow in Sissach?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Sissach.
What is the air quality in Sissach?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Sissach.
Are there weather alerts for Sissach?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Sissach located?
Sissach sits at around 444 m above sea level in the canton of Basel-Country. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Sissach?
The warmest month in Sissach is July, averaging 19.2 °C (1991–2020 normal). The coldest is January at 1.7 °C.
How much does it rain in Sissach per year?
Sissach receives about 944 mm of precipitation a year. The wettest month is May (106 mm), the driest February (49 mm).
When is the best time to visit Sissach?
For warmth and sunshine: July (19.2 °C on average, 233 h of sun). The coldest month is January (1.7 °C). Check the 15-day forecast above for your dates.