Average Weather in Whistler Canada
In Whistler, the summers are short, comfortable, and partly cloudy and the winters are long, freezing, snowy, and overcast. Over the course of the year, the temperature typically varies from 20°F to 72°F and is rarely below 7°F or above 84°F.
Based on the tourism score, the best time of year to visit Whistler for warm-weather activities is from mid July to mid August.
The warm season lasts for 2.7 months, from June 23 to September 12, with an average daily high temperature above 64°F. The hottest day of the year is August 3, with an average high of 72°F and low of 49°F.
The cold season lasts for 3.7 months, from November 10 to March 1, with an average daily high temperature below 38°F. The coldest day of the year is December 28, with an average low of 20°F and high of 30°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 Whistler, 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 Whistler begins around June 25 and lasts for 3.0 months, ending around September 27. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 61% of the time, and overcast or mostly cloudy 39% of the time.
The cloudier part of the year begins around September 27 and lasts for 9.0 months, ending around June 25. On January 22, the cloudiest day of the year, the sky is overcast or mostly cloudy 77% of the time, and clear, mostly clear, or partly cloudy 23% 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 Whistler varies significantly throughout the year.
The wetter season lasts 6.5 months, from October 7 to April 23, with a greater than 36% chance of a given day being a wet day. The chance of a wet day peaks at 56% on November 15.
The drier season lasts 5.5 months, from April 23 to October 7. The smallest chance of a wet day is 16% on August 6.
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 Whistler changes throughout the year.
Rain alone is the most common for 7.2 months, from April 9 to November 14. The highest chance of a day with rain alone is 39% on October 23.
Mixed snow and rain is the most common for 3.6 months, from January 14 to April 9 and from November 14 to December 10. The highest chance of a day with mixed snow and rain is 26% on November 26.
Snow alone is the most common for 1.1 months, from December 10 to January 14. The highest chance of a day with snow alone is 26% on December 27.
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. Whistler experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Whistler. The most rain falls during the 31 days centered around November 1, with an average total accumulation of 6.2 inches.
The least rain falls around July 31, 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. Whistler experiences extreme seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 7.3 months, from October 4 to May 12, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 15, with an average total liquid-equivalent accumulation of 4.1 inches.
The snowless period of the year lasts for 4.7 months, from May 12 to October 4. The least snow falls around August 1, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Whistler varies extremely over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 3 minutes of daylight; the longest day is June 20, with 16 hours, 24 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:01 AM on June 16, and the latest sunrise is 3 hours, 10 minutes later at 8:10 AM on December 30. The earliest sunset is at 4:09 PM on December 11, and the latest sunset is 5 hours, 16 minutes later at 9:25 PM on June 25.
Daylight saving time (DST) is observed in Whistler during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.
Sunrise & Sunset with Twilight and Daylight Saving Time
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The perceived humidity level in Whistler, 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
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed in Whistler experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 4.8 months, from November 7 to April 1, with average wind speeds of more than 3.4 miles per hour. The windiest day of the year is December 29, with an average hourly wind speed of 3.9 miles per hour.
The calmer time of year lasts for 7.2 months, from April 1 to November 7. The calmest day of the year is August 14, with an average hourly wind speed of 2.8 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Whistler varies throughout the year.
The wind is most often from the south for 6.2 months, from January 11 to July 16 and for 4.1 months, from August 9 to December 12, with a peak percentage of 46% on June 24. The wind is most often from the west for 3.4 weeks, from July 16 to August 9, with a peak percentage of 40% on July 19. The wind is most often from the north for 4.3 weeks, from December 12 to January 11, with a peak percentage of 37% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Whistler 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 Whistler for general outdoor tourist activities is from mid July to mid August, with a peak score in the first week of August.
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 Whistler for hot-weather activities is from late July to mid August, with a peak score in the first week of August.
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.
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
The growing season in Whistler typically lasts for 4.4 months (134 days), from around May 21 to around October 2, rarely starting before April 28 or after June 15, and rarely ending before September 10 or after October 23.
Time Spent in Various Temperature Bands and the Growing Season
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
Based on growing degree days alone, the first spring blooms in Whistler should appear around June 7, only rarely appearing before May 21 or after June 27.
Growing Degree Days
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
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 3.4 months, from May 6 to August 20, with an average daily incident shortwave energy per square meter above 5.6 kWh. The brightest day of the year is July 20, with an average of 6.8 kWh.
The darker period of the year lasts for 3.9 months, from October 20 to February 16, with an average daily incident shortwave energy per square meter below 2.0 kWh. The darkest day of the year is December 26, with an average of 0.8 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Whistler are 50.116 deg latitude, -122.969 deg longitude, and 3,068 ft elevation.
The topography within 2 miles of Whistler contains large variations in elevation, with a maximum elevation change of 2,746 feet and an average elevation above sea level of 2,604 feet. Within 10 miles contains large variations in elevation (8,163 feet). Within 50 miles also contains extreme variations in elevation (9,642 feet).
The area within 2 miles of Whistler is covered by trees (69%) and artificial surfaces (10%), within 10 miles by trees (70%) and sparse vegetation (12%), and within 50 miles by trees (57%) and sparse vegetation (17%).
This report illustrates the typical weather in Whistler, 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 Whistler.
For each station, the records are corrected for the elevation difference between that station and Whistler 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 Whistler is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Whistler and a given station.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.