About Chiasso
Chiasso is a Swiss municipality located in the canton of Ticino (TI), at 45.834° latitude and 9.025° longitude. The municipality is part of the south of the Alps (Ticino), insubric near-Mediterranean climate, mild and sunny. Also known as Chiasso, Chiasso benefits from precise weather monitoring with hourly and 15-day forecasts.
Climate of Chiasso
The climate in Chiasso is characteristic of the south of the Alps (Ticino), insubric near-Mediterranean climate, mild and sunny. 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 Chiasso and neighboring municipalities.
On this page you will find the detailed weather forecast for Chiasso: current temperature, 48-hour hourly forecast, 15-day forecast, air quality, UV index, wind, precipitation and weather alerts. Updated hourly.
Climate of Chiasso: 1991–2020 normals
In Chiasso (239 m), the mean annual temperature is 12.6 °C. The warmest month is July (22.2 °C on average) and the coldest January (3.5 °C). About 1348 mm of precipitation falls per year, peaking in November (169 mm) with a minimum in January (59 mm). The sun shines for about 2032 hours a year, mostly in July (263 h). On average there are 88 frost days and 18 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 31.6 °C and the absolute minimum −5.6 °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 | 3.5 °C | 15.4 °C | −5.6 °C | 59 | 116 | 23 | 0 |
| Feb | 4.6 °C | 16.8 °C | −5.0 °C | 60 | 138 | 20 | 0 |
| Mar | 8.3 °C | 21.3 °C | −2.6 °C | 73 | 182 | 11 | 0 |
| Apr | 11.9 °C | 23.5 °C | 0.9 °C | 125 | 176 | 3 | 1 |
| May | 16.1 °C | 27.3 °C | 5.9 °C | 148 | 198 | 0 | 6 |
| Jun | 20.1 °C | 30.8 °C | 10.1 °C | 133 | 226 | 0 | 18 |
| Jul | 22.2 °C | 31.6 °C | 12.3 °C | 109 | 263 | 0 | 26 |
| Aug | 21.7 °C | 31.2 °C | 12.0 °C | 124 | 239 | 0 | 25 |
| Sep | 17.3 °C | 26.9 °C | 7.8 °C | 130 | 173 | 0 | 7 |
| Oct | 13.1 °C | 23.4 °C | 3.3 °C | 140 | 126 | 1 | 0 |
| Nov | 8.2 °C | 18.4 °C | −1.3 °C | 169 | 97 | 9 | 0 |
| Dec | 4.3 °C | 15.5 °C | −5.3 °C | 78 | 98 | 21 | 0 |
| Year | 12.6 °C | 31.6 °C | −5.6 °C | 1348 | 2032 | 88 | 82 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Stabio (7 km, 351 m), Monte Generoso (10 km, 1600 m), Lugano (20 km, 273 m), adjusted to the elevation of Chiasso (239 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Nearby cities
Check the weather of cities near Chiasso:
- Weather Morbio Inferiore
- Weather Balerna
- Weather Vacallo
- Weather Novazzano
- Weather Breggia
- Weather Coldrerio
- Weather Stabio
- Weather Mendrisio
- Weather Riva San Vitale
- Weather Castel San Pietro
- Weather Brusino Arsizio
- Weather Val Mara
→ Nearby cities · Canton Ticino
Frequently asked questions about weather in Chiasso
What is the weather in Chiasso today?
At the top of the page you will find the current temperature, precipitation and wind in Chiasso, updated in real time.
What is the 15-day forecast for Chiasso?
The "15-day forecast" section shows min/max temperatures, precipitation and wind expected for the next 15 days in Chiasso.
Will it rain tomorrow in Chiasso?
Check the 48-hour hourly forecast to see exactly when precipitation is expected in Chiasso.
What is the air quality in Chiasso?
The air quality section displays the AQI index and PM2.5, PM10 and ozone concentrations measured near Chiasso.
Are there weather alerts for Chiasso?
Weather alerts (storms, high winds, extreme temperatures) are shown as a banner at the top of the page when active.
At what altitude is Chiasso located?
Chiasso sits at around 239 m above sea level in the canton of Ticino. This elevation directly affects the temperatures, rain-snow line and snow cover shown in the forecasts.
What is the warmest month in Chiasso?
The warmest month in Chiasso is July, averaging 22.2 °C (1991–2020 normal). The coldest is January at 3.5 °C.
How much does it rain in Chiasso per year?
Chiasso receives about 1348 mm of precipitation a year. The wettest month is November (169 mm), the driest January (59 mm).
When is the best time to visit Chiasso?
For warmth and sunshine: July (22.2 °C on average, 263 h of sun). The coldest month is January (3.5 °C). Check the 15-day forecast above for your dates.