Average Weather in Saint-Gervais-les-Bains France
In Saint-Gervais-les-Bains, the summers are comfortable, the winters are freezing, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 19°F to 73°F and is rarely below 10°F or above 82°F.
Based on the tourism score, the best time of year to visit Saint-Gervais-les-Bains for warm-weather activities is from late June to late August.
The warm season lasts for 3.5 months, from May 31 to September 13, with an average daily high temperature above 65°F. The hottest day of the year is July 26, with an average high of 73°F and low of 52°F.
The cold season lasts for 3.2 months, from November 21 to February 26, with an average daily high temperature below 41°F. The coldest day of the year is January 12, with an average low of 19°F and high of 33°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
Revelstoke, Canada (4,987 miles away) and Upper Bear Creek, Colorado, United States (5,199 miles) are the far-away foreign places with temperatures most similar to Saint-Gervais-les-Bains (view comparison).
In Saint-Gervais-les-Bains, 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 Saint-Gervais-les-Bains begins around June 20 and lasts for 2.9 months, ending around September 17. On July 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 64% of the time, and overcast or mostly cloudy 36% of the time.
The cloudier part of the year begins around September 17 and lasts for 9.1 months, ending around June 20. On May 9, the cloudiest day of the year, the sky is overcast or mostly cloudy 61% of the time, and clear, mostly clear, or partly cloudy 39% 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 Saint-Gervais-les-Bains varies throughout the year.
The wetter season lasts 7.8 months, from May 1 to December 26, with a greater than 32% chance of a given day being a wet day. The chance of a wet day peaks at 40% on May 27.
The drier season lasts 4.2 months, from December 26 to May 1. The smallest chance of a wet day is 23% on March 3.
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 Saint-Gervais-les-Bains changes throughout the year.
Rain alone is the most common for 9.2 months, from February 25 to December 2. The highest chance of a day with rain alone is 40% on May 27.
Mixed snow and rain is the most common for 2.8 months, from December 2 to February 25. The highest chance of a day with mixed snow and rain is 15% on December 22.
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. Saint-Gervais-les-Bains experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year in Saint-Gervais-les-Bains. The most rain falls during the 31 days centered around May 31, with an average total accumulation of 3.3 inches.
The least rain falls around January 15, with an average total accumulation of 1.3 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. Saint-Gervais-les-Bains experiences significant seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.7 months, from October 28 to April 18, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 2, with an average total liquid-equivalent accumulation of 1.7 inches.
The snowless period of the year lasts for 6.3 months, from April 18 to October 28. The least snow falls around July 26, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Saint-Gervais-les-Bains varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 39 minutes of daylight; the longest day is June 21, with 15 hours, 44 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:42 AM on June 16, and the latest sunrise is 2 hours, 33 minutes later at 8:14 AM on January 1. The earliest sunset is at 4:48 PM on December 10, and the latest sunset is 4 hours, 39 minutes later at 9:27 PM on June 26.
Daylight saving time (DST) is observed in Saint-Gervais-les-Bains 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 Saint-Gervais-les-Bains, 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
Average Wind Speed
The predominant average hourly wind direction in Saint-Gervais-les-Bains varies throughout the year.
The wind is most often from the north for 1.1 weeks, from April 17 to April 25, with a peak percentage of 28% on April 20. The wind is most often from the west for 4.6 months, from April 25 to September 13, with a peak percentage of 44% on July 7. The wind is most often from the south for 7.1 months, from September 13 to April 17, with a peak percentage of 42% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Saint-Gervais-les-Bains 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 Saint-Gervais-les-Bains for general outdoor tourist activities is from late June to late 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 Saint-Gervais-les-Bains for hot-weather activities is from mid July to mid 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 Saint-Gervais-les-Bains typically lasts for 5.4 months (165 days), from around May 1 to around October 12, rarely starting before April 9 or after May 23, and rarely ending before September 26 or after October 28.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Saint-Gervais-les-Bains should appear around May 9, only rarely appearing before April 26 or after May 26.
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 3.3 months, from May 9 to August 18, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest day of the year is July 6, with an average of 7.2 kWh.
The darker period of the year lasts for 3.4 months, from October 29 to February 9, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest day of the year is December 21, with an average of 1.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Saint-Gervais-les-Bains are 45.893 deg latitude, 6.714 deg longitude, and 3,543 ft elevation.
The topography within 2 miles of Saint-Gervais-les-Bains contains extreme variations in elevation, with a maximum elevation change of 4,554 feet and an average elevation above sea level of 3,455 feet. Within 10 miles also contains extreme variations in elevation (14,065 feet). Within 50 miles also contains extreme variations in elevation (14,987 feet).
The area within 2 miles of Saint-Gervais-les-Bains is covered by trees (57%), artificial surfaces (24%), and grassland (14%), within 10 miles by trees (32%) and grassland (19%), and within 50 miles by trees (35%) and grassland (22%).
This report illustrates the typical weather in Saint-Gervais-les-Bains, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Saint-Gervais-les-Bains.
For each station, the records are corrected for the elevation difference between that station and Saint-Gervais-les-Bains 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 Saint-Gervais-les-Bains is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Saint-Gervais-les-Bains and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .