Whistler in September
In September, Whistler averages 18°C (64°F) during the day and 9°C (47°F) at night, with frequent rain — about 16 days of the month see precipitation (143 mm total).
ShoulderConditions are cool — bring a jacket for evenings. Expect daily rain or showers, often in heavy bursts.
September is one of the wetter and less comfortable months in Whistler. If your dates are flexible, consider a different time of year.
How September compares to the rest of the year in Whistler
September is in the middle of the year for warmth in Whistler (4th of 12) and one of the driest months (10th of 12). Daytime temperature runs 7°C above the annual average (11°C). September runs 6°C cooler than August (24°C) and cools 6°C in October (11°C).
September sunrise & sunset in Whistler
Times shown for Whistler local time (America/Vancouver), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Whistler — September
Golden-hour and blue-hour windows for the 15th of September, in Whistler's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Whistler in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Whistler's popularity.
Crowds & pricing — September in Whistler
Whistler is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — September in Whistler
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Whistler in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 2°C / 36°F | -3°C / 27°F | 321 mm | 22 | — |
| February | 2°C / 35°F | -5°C / 23°F | 181 mm | 21 | — |
| March | 6°C / 42°F | -1°C / 29°F | 217 mm | 22 | — |
| April | 9°C / 49°F | 1°C / 34°F | 145 mm | 20 | — |
| May | 16°C / 61°F | 6°C / 42°F | 92 mm | 20 | — |
| June | 19°C / 65°F | 9°C / 48°F | 88 mm | 20 | — |
| July | 23°C / 73°F | 12°C / 54°F | 60 mm | 14 | — |
| August | 24°C / 74°F | 13°C / 55°F | 62 mm | 12 | — |
| September | 18°C / 64°F | 9°C / 47°F | 143 mm | 16 | — |
| October | 11°C / 52°F | 4°C / 39°F | 272 mm | 20 | — |
| November | 4°C / 40°F | -2°C / 29°F | 357 mm | 21 | — |
| December | 0°C / 33°F | -5°C / 23°F | 315 mm | 20 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Whistler in September →
Frequently asked questions
How hot is Whistler in September?
In September, Whistler averages a high of 18°C (64°F) and a low of 9°C (47°F) — generally mild and pleasant.
Does it rain a lot in Whistler in September?
September is quite rainy in Whistler, with about 16 rainy days on average.
Is September a good time to visit Whistler?
September is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Whistler in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Whistler for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.