- Temperature
- -14 to 17°C
Updated July 2026 · Sources cited: weather-and-climate.com, en.climate-data.org
Good to know
Good to Know
- Winter layers are essential from November through April—even short walks require thermal underwear and windproof jackets due to both cold and wet conditions.
- July and August offer the best balance of weather, though expect mixed sun and rain with 124–131 mm of monthly rainfall.
- If skiing or snowboarding, December through March offers reliable snow depth, though February–March can see the heaviest falls. Always check local avalanche risk before venturing off-piste.
- The dramatic reduction in daylight hours (4.9 hours in January vs. 9.3 hours in July) affects mood and activity planning in winter months.
- Road conditions and visibility can deteriorate rapidly in winter and shoulder seasons due to frequent snowfall and fog in this high-altitude valley location.
Peak Month
- Month
- July
Daytime High
- Celsius
- 17
- Fahrenheit
- 63
Nighttime Low
- Celsius
- 7
- Fahrenheit
- 45
Off Peak Month
- Month
- January
Daytime High
- Celsius
- -5
- Fahrenheit
- 23
Nighttime Low
- Celsius
- -14
- Fahrenheit
- 7
Wind
Light winds year-round, averaging 1–2 m/s. Wind is slightly lower in winter months (January, October–December) and slightly higher in spring and summer months.
Humidity
Relative humidity is high throughout the year, ranging from 67.97% in January to 77.64% in May.
Grimentz has a cold, temperate alpine climate with significant temperature variations throughout the year. Located at 1,620 m elevation in the Pennine Alps, the village experiences cold winters with substantial snowfall and mild summers with rainfall.
Snowfall
Significant snowfall from December through March. January averages 727 mm of snow across 20.3 snowy days. February is the snowiest week of the year with approximately 45 cm during week 1. December receives the highest monthly snowfall at 887 mm.
Sunshine
Highly seasonal. July receives the most sunshine (9.3 hours per day), while February is the darkest month with only 4.5 hours per day on average.
Best Months
July and August are the most pleasant months with comfortable daytime temperatures and relatively balanced sun and rain.
Worst Months
January and February are the coldest months with heavy snowfall and limited daylight hours.
Rainfall Pattern
Most precipitation falls in May (141 mm) and June (peak rainy days at 16.5 days/month). October is the driest month (104 mm). Rainfall is consistent year-round.
Precipitation Annual
1,464 mm per year with fairly balanced distribution; no distinctly dry season.
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Grimentz
Data last updated July 2026 · Verify anything important.