Climate Insights for Biasso

The climate in Biasso is hot. The average annual temperature is 26°C and approximately 1385mm of precipitation falls per year. June is the wettest month, receiving around 207mm of rainfall. Biasso sits near the equator, so seasonal temperature differences are minimal throughout the year.

Biasso sees moderate temperature variation throughout the year, ranging from 22°C to 34°C. The warmest month is February, when average highs reach 34°C and the mean temperature sits around 28°C. August is the coolest month, with minimum temperatures around 22°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.

Biasso is a fairly wet location, receiving approximately 1385mm of precipitation annually, which averages out to around 115mm per month. The wettest month is June, averaging 207mm of rainfall. October and May also tend to see above-average precipitation. The driest month is January, with just 22mm. That's 185mm less than June, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Biasso is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

It is currently winter in Biasso, which began on December 21, 2026. Biasso sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in February at around 34°C, while the coldest stretch bottoms out in August near 22°C. Spring is next, beginning on March 20, 2026 — 3 days from now.

The best time to visit Biasso is during August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 91mm per month. By contrast, February can be uncomfortably hot with temperatures reaching 34°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Biasso based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.