Chiasso Temperature by Month
Chiasso, Canton of Ticino, Switzerland has an average annual maximum temperature of 17°C (63°F), ranging from 7°C (45°F) in January to 28°C (82°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Chiasso Monthly Temperatures
The climate in Chiasso is dynamic, ranging widely from chilly in winter to comfortable in summer. Nights are significantly colder, with lows dropping from 18°C (64°F) in July to 0°C (32°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Chiasso by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 284 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Chiasso vs Switzerland
The map below shows the annual temperature across Switzerland. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Chiasso vs World: Temperature Compared
Chiasso's average annual maximum temperature is 17°C (63°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Chiasso?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Chiasso, January is the coolest month, with average highs of 7°C (45°F) and humidity around 83% — considered very high. In July, the warmest month, temperatures average 28°C (82°F) with 73% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Chiasso this rarely lasts long on the ground.
For more on Chiasso's weather — including monthly rainfall, sunshine hours, and humidity — visit our Chiasso climate page.
