Climate Overview
The climate in Somma Lombardo is temperate. The average annual temperature is 12°C and approximately 1930mm of precipitation falls per year. November is the wettest month, receiving around 287mm of rainfall. Somma Lombardo is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are January, December, February, when temperatures can drop to 1°C. Snowfall occurs from January to December, with around 85cm accumulating over the season.
Temperature
Temperatures in Somma Lombardo vary considerably across the year, with a 26°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 22°C. January is the coolest month, with minimum temperatures around 1°C and an average of 4°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.
Precipitation
Somma Lombardo is a fairly wet location, receiving approximately 1930mm of precipitation annually, which averages out to around 161mm per month. The wettest month is November, averaging 287mm of rainfall. June and May also tend to see above-average precipitation. The driest month is December, with just 28mm. That's 260mm less than November, 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. Snowfall is a regular feature from January to December, with around 85cm accumulating over the season. March typically sees the most snow at around 37cm.
Wind
Somma Lombardo is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
52 days until Autumn
It is currently summer in Somma Lombardo, which began on June 21, 2026. Somma Lombardo is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 27°C, while the coldest stretch bottoms out in January near 1°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.
Spring
Temperatures range from 3 to 19°C. Rainfall is heavy, totalling around 528mm across the season with a monthly average of 176mm. Winds are generally light, averaging 1km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 15 to 27°C. Rainfall is heavy, totalling around 585mm across the season with a monthly average of 195mm. Winds are generally light, averaging 1km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 5 to 24°C. Rainfall is heavy, totalling around 545mm across the season with a monthly average of 182mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 1 to 9°C. Precipitation is moderate at around 271mm for the season, averaging 90mm per month. Expect around 42cm of snow accumulation during this period. Winds are generally light, averaging 1km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Best Time to Visit
The best time to visit Somma Lombardo is during September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 78mm per month. By contrast, July can be uncomfortably hot with highs reaching 27°C, while January is the coldest period with lows dropping to 1°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.
Monthly Climate Data
The table below shows monthly climate averages for Somma Lombardo 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.
