Zernez Temperature by Month

Zernez in Grisons, Switzerland sees significant seasonal temperature differences, with daytime highs between -6°C (21°F) in January and 16°C (61°F) in July, averaging 5°C (41°F) annually. Explore the full monthly breakdown below.

Visitors to Zernez will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 5°C (41°F) in July to -15°C (5°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Zernez 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 188 hours of sunshine.

The chart below shows the average temperature throughout the year:

Zernez's average annual maximum temperature is 5°C (41°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.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

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 Zernez, January is the coolest month, with average highs of -6°C (21°F) and humidity around 76%, 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.

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 Zernez this rarely lasts long on the ground.

For more on Zernez's weather, including monthly rainfall, sunshine hours, and humidity, visit our Zernez climate page.