Average Weather in Val-d’Isère France
In Val-d’Isère, the summers are cool, the winters are frigid and snowy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 4°F to 58°F and is rarely below -4°F or above 65°F.
Based on the tourism score, the best time of year to visit Val-d’Isère for warm-weather activities is from early July to mid August.
The warm season lasts for 3.3 months, from June 3 to September 13, with an average daily high temperature above 50°F. The hottest day of the year is July 26, with an average high of 58°F and low of 38°F.
The cold season lasts for 3.6 months, from November 19 to March 5, with an average daily high temperature below 27°F. The coldest day of the year is January 12, with an average low of 4°F and high of 19°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Val-d’Isère, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Val-d’Isère begins around June 19 and lasts for 2.9 months, ending around September 15. On July 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.
The cloudier part of the year begins around September 15 and lasts for 9.1 months, ending around June 19. On May 9, the cloudiest day of the year, the sky is overcast or mostly cloudy 58% of the time, and clear, mostly clear, or partly cloudy 42% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Val-d’Isère varies throughout the year.
The wetter season lasts 2.0 months, from April 26 to June 26, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 38% on May 24.
The drier season lasts 10 months, from June 26 to April 26. The smallest chance of a wet day is 20% on March 5.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Val-d’Isère changes throughout the year.
Snow alone is the most common for 6.6 months, from October 9 to April 29. The highest chance of a day with snow alone is 27% on December 31.
Rain alone is the most common for 4.9 months, from May 12 to October 9. The highest chance of a day with rain alone is 27% on June 17.
Mixed snow and rain is the most common for 1.9 weeks, from April 29 to May 12. The highest chance of a day with mixed snow and rain is 15% on May 9.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Val-d’Isère experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 6.1 months, from April 22 to October 27, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 15, with an average total accumulation of 2.1 inches.
The rainless period of the year lasts for 5.9 months, from October 27 to April 22. The least rain falls around January 3, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.
As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Val-d’Isère experiences extreme seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 9.8 months, from September 2 to June 27, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around November 27, with an average total liquid-equivalent accumulation of 2.2 inches.
The snowless period of the year lasts for 2.2 months, from June 27 to September 2. The least snow falls around August 2, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Val-d’Isère varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 43 minutes of daylight; the longest day is June 21, with 15 hours, 41 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:42 AM on June 15, and the latest sunrise is 2 hours, 29 minutes later at 8:12 AM on January 2. The earliest sunset is at 4:48 PM on December 10, and the latest sunset is 4 hours, 36 minutes later at 9:24 PM on June 26.
Daylight saving time (DST) is observed in Val-d’Isère during 2018, starting in the spring on March 25, lasting 7.1 months, and ending in the fall on October 28.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Val-d’Isère, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels
The average hourly wind speed in Val-d’Isère experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.3 months, from November 15 to May 25, with average wind speeds of more than 4.2 miles per hour. The windiest day of the year is March 29, with an average hourly wind speed of 4.8 miles per hour.
The calmer time of year lasts for 5.7 months, from May 25 to November 15. The calmest day of the year is August 10, with an average hourly wind speed of 3.6 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Val-d’Isère is from the west throughout the year.
Best Time of Year to Visit
To characterize how pleasant the weather is in Val-d’Isère throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Val-d’Isère for general outdoor tourist activities is from early July to mid August, with a peak score in the last week of July.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Val-d’Isère for hot-weather activities is from mid July to early August, with a peak score in the last week of July.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Val-d’Isère typically lasts for 1.0 months (32 days), from around July 13 to around August 14, rarely starting before June 16, or ending after September 6.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Val-d’Isère should appear around July 16, only rarely appearing before July 2 or after August 4.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.2 months, from May 11 to August 17, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest day of the year is July 6, with an average of 7.4 kWh.
The darker period of the year lasts for 3.3 months, from October 28 to February 8, with an average daily incident shortwave energy per square meter below 2.8 kWh. The darkest day of the year is December 21, with an average of 1.7 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Val-d’Isère are 45.450 deg latitude, 6.978 deg longitude, and 8,028 ft elevation.
The topography within 2 miles of Val-d’Isère contains extreme variations in elevation, with a maximum elevation change of 3,875 feet and an average elevation above sea level of 7,468 feet. Within 10 miles also contains extreme variations in elevation (8,763 feet). Within 50 miles also contains extreme variations in elevation (15,180 feet).
The area within 2 miles of Val-d’Isère is covered by grassland (36%), bare soil (29%), and sparse vegetation (25%), within 10 miles by bare soil (43%) and grassland (30%), and within 50 miles by trees (36%) and grassland (22%).
This report illustrates the typical weather in Val-d’Isère, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Val-d’Isère.
For each station, the records are corrected for the elevation difference between that station and Val-d’Isère according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Val-d’Isère is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Val-d’Isère and a given station.
The stations contributing to this reconstruction are: Aosta Airport (25%, 43 kilometers, northeast); Turin Caselle Airport (20%, 59 kilometers, southeast); Annecy-Meythet (21%, 87 kilometers, northwest); Chambéry Airport (18%, 88 kilometers, west); and Château-Arnoux-Saint-Auban Airport (16%, 172 kilometers, southwest).
Time zones for aiports and weather stations are provided by AskGeo.com .