Last updated: April 22, 2025
In Whistler, Canada, September presents a remarkable transition in weather, offering a delightful mix of mild temperatures and scenic beauty. With maximums reaching 26°C (79°F) and an average of 9°C (48°F), visitors can enjoy comfortable outdoor activities amidst breathtaking autumn foliage. However, the season also brings its share of precipitation, averaging 201 mm (7.9 in) over 15 rainy days, contributing to the lush landscapes that define this renowned destination. Coupled with a humidity level of 76%, the atmosphere is refreshing, making September an ideal time for both adventure and relaxation in the stunning natural surroundings of Whistler.
In September, Whistler's temperatures start to transition from the warm summer months to the cooler fall season. With a minimum temperature of -3°C (28°F), the nights hint at the approaching chill, while the average temperature of 9°C (48°F) provides a crisp but pleasant climate for outdoor activities. Daytime highs can reach up to 26°C (79°F), offering a delightful balance of warmth for hiking and exploring the breathtaking landscapes. This month serves as a bridge, showcasing the last vestiges of summer before autumn sets in, making it an ideal time for visitors to experience the transition in all its beautiful colors and cooler air.
In September, Whistler experiences a noticeable uptick in precipitation, with 201 mm (7.9 in) falling over 15 days, signaling a shift towards the wetter months. This increase marks a transition from the relatively dry summer months of July and August, which saw only 74 mm and 75 mm respectively. As autumn approaches, the rainfall begins to prepare the landscape for the stunning fall colors while also hinting at the substantial precipitation that follows in October and November, where totals soar to 288 mm and 425 mm. This pattern underscores the importance of September as a bridge between the drier summer and the onset of the wetter, snow-laden winter season in this picturesque Canadian resort town.
As September settles in Whistler, Canada, the air begins to shift with a noticeable decrease in humidity, dipping to 76%. This marks a continuation of the downward trend that starts in mid-summer, as the lush, humid days of August — with its 77% humidity — give way to the crispness of autumn. Compared to the moist winter months, where humidity hovers above 85%, September provides a refreshing transition, inviting outdoor activities amid the stunning fall foliage. As the seasons progress, the humidity begins to climb again in October, but for now, September's relatively drier air offers a brief reprieve, perfect for enjoying the beautiful landscapes Whistler has to offer.
As the seasons transition in Whistler, Canada, September brings a UV Index of 7, placing it in the high exposure category with a burn time of 25 minutes. This month marks a notable shift from the intense UV exposure experienced during the peak summer months of June through August, where indices hovered at a striking 9 or 10. While September still demands attention to sun safety, the earlier months showcased a dramatic rise in UV levels, peaking at very high ratings. As fall approaches, it’s crucial to remain aware of the UV Index trends; even as the sun becomes less fierce, protective measures should still be considered. For more detailed insights, explore the full UV Index data here: Whistler UV Index.
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September in Whistler, Canada, offers a delightful transition from summer's vibrant warmth to the crispness of autumn. With 212 hours of sunshine, it's a month where outdoor enthusiasts can relish the fading summer days surrounded by stunning mountain scenery. This is a modest dip from the peak of 358 hours in July, but still a significant amount compared to the earlier months of the year. The sunny allure of September continues the trend of increasing daylight that began in January and reached its zenith in July. As families wrap up their summer adventures, the golden sunlight provides one last hurrah before the days shorten and the landscape transforms into a colorful tapestry of fall foliage. Whistler's September truly embodies the charm of seasonal change, punctuating the year with beautiful, sunlit moments.
In Whistler, Canada, the likelihood of sunny weather takes a noticeable dip in September, with only a 17% chance of sunshine. This is part of a larger trend observed throughout the year, where summer months like July peak with a 55% probability of clear skies, creating vibrant conditions for outdoor adventures. As the season transitions into autumn, the sun’s presence wanes, dropping from August’s 34% and falling further towards the gloomy months of October and November. September marks a shift in Whistler’s weather patterns, signaling the approach of colder days and less sunlight, inviting visitors to embrace the area's stunning fall foliage instead.
As summer fades into autumn, September in Whistler, Canada, brings a gentle reduction in daylight, with the sun gracing the sky for about 12 hours each day. This marks a transition from the long, sun-soaked days of June and July that boast up to 16 hours of daylight, gradually decreasing as fall approaches. While September offers a moderate amount of light compared to the peak summer months, it still holds onto a sense of brightness, creating a perfect backdrop for outdoor activities and the stunning change in foliage. As the year progresses towards winter, daylight shrinks further, dipping down to 10 hours in October and lingering at a mere 8 hours by December. This trend underscores the natural rhythm of the seasons, inviting residents and visitors alike to savor the last warm, sunlit days of the year.
As September rolls into Whistler, Canada, the gentle caress of the wind continues to weave its tranquil spell. With an average wind speed of 1.2 m/s (3 mph), the breeze remains soft and inviting, mirroring the calm that accompanies the changing seasons. Notably, this slight dip from the previous months emphasizes a trend of steadiness, as wind speeds have hovered consistently between 1.2 and 1.4 m/s throughout the year. As autumn approaches, the mild conditions create an ideal backdrop for outdoor adventures, where the whispers of the wind complement the breathtaking landscapes, inviting visitors to enjoy the serene beauty of Whistler before winter sets in.
The weather in Whistler changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Whistler and find detailed weather information for every month.
September and January present strikingly contrasting weather patterns. In September, temperatures range from a chilly -3°C (28°F) at night to a comfortable 26°C (79°F) during the day, with an average of 9°C (48°F). The month experiences 201 mm (7.9 in) of precipitation over 15 days, along with a humidity level of 76%. In sharp contrast, January sees much colder conditions, with temperatures dipping as low as -26°C (-14°F), an average of -5°C (23°F), and a maximum of just 4°C (39°F). This winter month is even wetter, with 351 mm (13.8 in) of precipitation over 17 days and increased humidity at 86%. For more details on the weather specific to January, you can visit Whistler weather in January.
In comparing the weather between September and February, we see a stark contrast in temperature and conditions. September boasts a milder temperature range, with minimums around -3°C (28°F) and maximums reaching 26°C (79°F), while February experiences much colder temperatures, with lows of -24°C (-12°F) and highs only up to 4°C (40°F). Humidity levels are relatively high in both months, at 76% in September and 85% in February. Precipitation is quite similar, with September receiving 201 mm (7.9 in) over 15 days, while February has 192 mm (7.6 in) spread across 18 days. For a detailed look at the specific weather in February, you can refer to Whistler weather in February.
September and March exhibit significantly different weather conditions. In September, temperatures range from a chilly minimum of -3°C (28°F) to a comfortable maximum of 26°C (79°F), averaging around 9°C (48°F). The month sees 201 mm (7.9 in) of precipitation over approximately 15 days, with humidity levels around 76%. In contrast, March presents a colder climate with temperatures dipping as low as -19°C (-2°F) and peaking at 13°C (56°F), averaging -2°C (28°F). This month experiences slightly more precipitation at 225 mm (8.9 in) across about 18 days, coupled with higher humidity at 86%. For those looking to explore the specifics of March weather, you can find more information here: Whistler weather in March.
When comparing the weather in September and April, a clear transition from late winter to early fall can be observed. September boasts a more moderate temperature range, with a minimum of -3°C (28°F) and an average of 9°C (48°F), peaking at a pleasant 26°C (79°F). In contrast, April experiences colder conditions, with temperatures dipping to a minimum of -12°C (11°F) and averaging just 1°C (33°F), though it can climb to a maximum of 16°C (61°F). Both months feature considerable precipitation, with September receiving 201 mm (7.9 in) over 15 days and April slightly less at 177 mm (7.0 in) across 16 days. The humidity is higher in April at 86%, compared to 76% in September, contributing to a damp and chilly atmosphere. For more detailed information on the weather conditions during April, you can visit Whistler weather in April.
September and May present distinct weather patterns, with September typically offering a wider range of temperatures. While September's average temperature hovers around 9°C (48°F) and peaks at 26°C (79°F), May has a cooler average of 6°C (42°F) and a maximum of 22°C (71°F). Precipitation also varies, with September receiving about 201 mm (7.9 in) over 15 days, compared to May's 109 mm (4.3 in) over 13 days. Additionally, humidity levels are relatively high in both months, with September at 76% and May slightly higher at 81%. For a closer look at May's weather specifics, check out Whistler weather in May.
September weather in Whistler features a wider temperature range, with minimums dipping to -3°C (28°F) and highs reaching 26°C (79°F), resulting in an average of 9°C (48°F). The month is relatively wet, receiving significant precipitation of 201 mm (7.9 in) over 15 days, accompanied by a humidity level of 76%. In contrast, June offers slightly warmer conditions, with minimum temperatures around -1°C (30°F) and a maximum of 33°C (92°F), leading to an average temperature of 10°C (50°F). Additionally, June experiences less rainfall, totaling 131 mm (5.1 in) across 17 days, but higher humidity at 83%. For a detailed overview of June's weather, visit Whistler weather in June.
When comparing the weather in September and July, there are notable differences in temperature and precipitation. September tends to be cooler, with a minimum temperature of -3°C (28°F) and an average of 9°C (48°F), while July experiences milder conditions, with a minimum of 2°C (36°F) and an average of 13°C (56°F). July sees maximum temperatures reaching 28°C (83°F) compared to September's warmer max of 26°C (79°F). However, September is significantly wetter, receiving 201 mm (7.9 in) of precipitation over 15 days, whereas July has a much lighter rainfall of 74 mm (2.9 in) across 11 days. The humidity levels are relatively high in both months, with July at 84% and September slightly lower at 76%. For more details on July weather, visit Whistler weather in July.
When comparing the weather in September to that of August, it's clear that September experiences cooler temperatures overall, with a minimum of -3°C (28°F) and an average of 9°C (48°F), while August boasts a warmer minimum of 2°C (36°F) and an average temperature of 13°C (56°F). Additionally, September sees a significant increase in precipitation, totaling 201 mm (7.9 in) over 15 days, compared to August's 75 mm (3.0 in) over just 9 days, leading to a much wetter atmosphere in September. Despite the slightly lower humidity in August at 77%, both months demonstrate relatively high humidity levels, with September at 76%. For more detailed insights into August's weather, you can explore Whistler weather in August.
In September, the weather in Whistler is comparatively milder, with temperatures ranging from a minimum of -3°C (28°F) to a comfortable maximum of 26°C (79°F) and an average of 9°C (48°F). The month sees significant precipitation, totaling 201 mm (7.9 in) over 15 days, while humidity hovers around 76%.
By October, the climate shifts dramatically, with minimum temperatures dropping to -17°C (1°F) and an average of just 2°C (35°F). Although the maximum temperature reaches 19°C (66°F), the increased precipitation of 288 mm (11.3 in) over 17 days and elevated humidity at 88% create a much cooler and wetter experience. For a more detailed look at what to expect, visit Whistler weather in October.
September and November present a stark contrast in weather conditions. In September, temperatures can range from a chilly -3°C (28°F) at night to a warm 26°C (79°F) during the day, with an average of 9°C (48°F). The month experiences about 201 mm (7.9 in) of precipitation over 15 days, with humidity levels at 76%. In contrast, November sees much colder temperatures, with a minimum of -17°C (2°F) and a maximum of only 8°C (47°F), leading to an average of -2°C (29°F). The precipitation levels rise significantly to 425 mm (16.7 in) spread over 20 days, and humidity increases to 87%. For a detailed look at what to expect, check out Whistler weather in November.
September weather in Whistler presents a much milder climate, with average temperatures ranging from a minimum of -3°C (28°F) to a maximum of 26°C (79°F). This month experiences 201 mm (7.9 in) of precipitation over 15 days, with humidity levels around 76%. In contrast, December brings significantly colder conditions, with temperatures dropping to a minimum of -28°C (-18°F) and an average of -6°C (21°F), peaking at 3°C (38°F). Precipitation increases to 336 mm (13.2 in) spread across 20 days, accompanied by higher humidity at 87%. For more detailed insights into the weather patterns during this winter month, visit Whistler weather in December.
As September rolls in, Whistler experiences a unique transition in weather compared to the warmer summer months. With average temperatures dipping notably, the crispness of early autumn begins to set the stage for stunning fall foliage. The likelihood of rain increases, leading to about half the month experiencing precipitation, which adds a refreshing ambiance to the lush landscapes. Humidity remains quite high, creating a cozy atmosphere that contrasts with the dry heat of summer. For those keen to explore the changing scenery and enjoy the shifting climate, now is a perfect time to visit. For further insights into yearly weather patterns, check out Whistler Climate.