September 4 is generally a great time to visit Whistler. While there is a slight chance of rain (22%), showers are usually brief. Expect comfortable 21°C weather. As it's peak season for Whistler, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Whistler
Currency
CAD
$ Canadian dollar
Language
English
+1 more
Driving
Right side
Safety
Very High Safety
GPI: 1.389
Whistler Weather Forecast for September 4
"Mild & Comfortable. Expect average highs of 21.3°C. 22% chance of rain."
What to Wear in Whistler in September
Based on historical data for September 4, Whistler typically experiences temperatures between 10.9°C and 21.3°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (22% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Whistler
Smart Suitcase
- Light Jacket
- Long Pants
Average High
21.3°C
Daytime Peak
Average Low
10.9°C
Nighttime Low
Feels Like
21.5°C
☀️ Feels accurate
Rain Chance
22%
Avg 1.9mm if it rains
Cloud Cover
57%
Overcast
Pressure
1016.5 hPa
Low volatility
Whistler Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
~ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 32 min to burn
Type III-IV
🟡 48 min to burn
Type V-VI
🟢 80 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
16°C
Noticeable
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Canada
Flight Traffic
High
95/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~415
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Whistler
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:32
☀️ Noon
12:12
🌇 Sunset
18:52
⏱️ Daylight
13h 19m
Wind Speed
6.6 km/h
Light breeze
Sunshine
10.5 hrs
Direct Sun (Cloud-free)
Humidity
72%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Whistler
Smart Flight Estimator
Airport-to-Airport Logistics
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Add your home location in settings to see airport details.
Travel Health & Safety in Whistler
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Whistler on September 4 averages 21.3°C with a 22% precipitation probability. Wedding/Outdoor Event Score: 98/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Whistler Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (September 4) in other destinations
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📍 Is Whistler Worth Visiting on September 4?
Planning a trip to Whistler on September 4? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 21.3°C with a 22% historical precipitation risk.
✈️ Travel Logistics: Approximately 415 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 6 vaccinations are recommended for Canada, including COVID-19.
📊 Historical Extremes: The hottest September 4 recorded in the last 30 years saw temperatures hit 32.8°C in 2025, while the coldest dropped to 6.9°C in 2018.