June 21 is generally a great time to visit Whistler. While there is a slight chance of rain (35%), showers are usually brief. Expect comfortable 18°C weather. Whistler is currently in its most popular travel window, meaning vibrant crowds and premium pricing. Note: June 21 is National Aboriginal Day in Whistler, so expect special events, closures, and festive atmosphere.
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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 June 21
"Mild & Comfortable. Expect average highs of 17.6°C. 35% chance of rain."
What to Wear in Whistler in June
Based on historical data for June 21, Whistler typically experiences temperatures between 8.9°C and 17.6°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 35% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Whistler
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
17.6°C
Daytime Peak
Average Low
8.9°C
Nighttime Low
Feels Like
17.6°C
🌤️ Feels accurate
Rain Chance
35%
Avg 2mm if it rains
Cloud Cover
69%
Light drizzle
Pressure
1016.9 hPa
Low volatility
Whistler Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ This date historically delivers consistent weather 75% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
04:00 - 10:00
16:00 - 20:00
Type I-II
🔴 19 min to burn
Type III-IV
🟡 29 min to burn
Type V-VI
🟢 48 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
13.3°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Holiday
National Aboriginal Day
Flight Traffic
High
90/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~394
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Whistler
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:03
☀️ Noon
12:14
🌇 Sunset
20:26
⏱️ Daylight
16h 23m
Wind Speed
7.1 km/h
Light breeze
Sunshine
11.6 hrs
Direct Sun (Cloud-free)
Humidity
76%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Whistler
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Whistler
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🔴 Very 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 June 21 averages 17.6°C with a 35% precipitation probability. Wedding/Outdoor Event Score: 84/100."
— 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
Better Alternatives Nearby
Consider these dates within ±7 days
June 28
20.2°C • 32% rain
Score
94
June 27
19.7°C • 37% rain
Score
91
June 25
19°C • 35% rain
Score
89
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (June 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Whistler Worth Visiting on June 21?
Planning a trip to Whistler on June 21? 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 17.6°C with a 35% historical precipitation risk.
🎉 Local Event: The date coincides with National Aboriginal Day, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 394 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 June 21 recorded in the last 30 years saw temperatures hit 27.5°C in 2021, while the coldest dropped to 5.3°C in 2017.