Sils Maria Temperature by Month
Sils Maria in Grisons, Switzerland sees significant seasonal temperature differences, with daytime highs between -5°C (23°F) in January and 17°C (63°F) in July, averaging 6°C (43°F) annually. Explore the full monthly breakdown below.
Sils Maria Monthly Temperatures
In Sils Maria, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 6°C (43°F) in July to -14°C (7°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Sils Maria by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 200 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Sils Maria 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.
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Sils Maria vs World: Temperature Compared
Sils Maria's average annual maximum temperature is 6°C (43°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Sils Maria?
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 Sils Maria, January is the coolest month, with average highs of -5°C (23°F) and humidity around 78% — considered 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.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Sils Maria's weather — including monthly rainfall, sunshine hours, and humidity — visit our Sils Maria climate page.
