About Therwil
Therwil is a Swiss municipality located in the canton of Basel-Country (BL), at 47.496° latitude and 7.557° longitude. The municipality is part of the Rhine valley, mild climate for Switzerland thanks to low elevation. Also known as Therwil, Therwil benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Therwil
The climate in Therwil 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 Therwil and neighboring municipalities.
On this page you will find the detailed weather forecast for Therwil: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Therwil: 1991–2020 normals
In Therwil (307 m), the mean annual temperature is 10.9 °C. The warmest month is July (20.0 °C on average) and the coldest January (2.2 °C). About 842 mm of precipitation falls per year, peaking in May (97 mm) with a minimum in February (45 mm). The sun shines for about 1710 hours a year, mostly in July (235 h). On average there are 61 frost days and 14 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 33.2 °C and the absolute minimum −7.9 °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 | 2.2 °C | 13.7 °C | −7.9 °C | 48 | 67 | 16 | 0 |
| Feb | 3.3 °C | 15.2 °C | −6.9 °C | 45 | 89 | 14 | 0 |
| Mar | 7.0 °C | 20.3 °C | −3.6 °C | 50 | 139 | 8 | 0 |
| Apr | 10.7 °C | 24.7 °C | −0.5 °C | 64 | 169 | 2 | 1 |
| May | 14.6 °C | 28.2 °C | 3.8 °C | 97 | 185 | 0 | 5 |
| Jun | 18.2 °C | 31.8 °C | 7.8 °C | 87 | 210 | 0 | 13 |
| Jul | 20.0 °C | 33.2 °C | 10.1 °C | 89 | 235 | 0 | 18 |
| Aug | 19.6 °C | 32.3 °C | 9.4 °C | 89 | 218 | 0 | 16 |
| Sep | 15.3 °C | 27.1 °C | 5.6 °C | 70 | 164 | 0 | 5 |
| Oct | 11.1 °C | 23.0 °C | 1.4 °C | 74 | 112 | 1 | 0 |
| Nov | 6.1 °C | 17.0 °C | −3.0 °C | 65 | 67 | 6 | 0 |
| Dec | 3.0 °C | 14.3 °C | −6.6 °C | 65 | 55 | 15 | 0 |
| Year | 10.9 °C | 33.2 °C | −7.9 °C | 842 | 1710 | 61 | 59 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Basel / Binningen (5 km, 316 m), St. Chrischona (13 km, 493 m), Delémont (22 km, 439 m), adjusted to the elevation of Therwil (307 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Therwil:
- Weather Ettingen
- Weather Witterswil
- Weather Oberwil (BL)
- Weather Biel-Benken
- Weather Bättwil
- Weather Aesch (BL)
- Weather Pfeffingen
- Weather Reinach (BL)
- Weather Bottmingen
- Weather Hofstetten-Flüh
- Weather Nenzlingen
- Weather Allschwil
→ Nearby cities · Canton Basel-Country
Frequently asked questions about weather in Therwil
What is the weather in Therwil today?
At the top of the page you will find the current temperature, precipitation and wind in Therwil, updated in real time.
What is the 15-day forecast for Therwil?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Therwil.
Will it rain tomorrow in Therwil?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Therwil.
What is the air quality in Therwil?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Therwil.
Are there weather alerts for Therwil?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Therwil located?
Therwil sits at around 307 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 Therwil?
The warmest month in Therwil is July, averaging 20.0 °C (1991–2020 normal). The coldest is January at 2.2 °C.
How much does it rain in Therwil per year?
Therwil receives about 842 mm of precipitation a year. The wettest month is May (97 mm), the driest February (45 mm).
When is the best time to visit Therwil?
For warmth and sunshine: July (20.0 °C on average, 235 h of sun). The coldest month is January (2.2 °C). Check the 15-day forecast above for your dates.