May 21 is generally a great time to visit Whistler. While there is a slight chance of rain (35%), showers are usually brief. Expect comfortable 14°C weather. Expect a bustling atmosphere in Whistler right now—this is when the city truly comes alive with visitors.
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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 May 21
"Mild & Comfortable. Expect average highs of 13.9°C. 35% chance of snow."
What to Wear in Whistler in May
Based on historical data for May 21, Whistler typically experiences temperatures between 4.6°C and 13.9°C. We recommend packing heavy coat, scarf, gloves along with other layers 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
- Heavy Coat
- Scarf
- Gloves
- Umbrella
Average High
13.9°C
Daytime Peak
Average Low
4.6°C
Nighttime Low
Feels Like
13.8°C
🌤️ Feels accurate
Snow Chance
35%
Avg 3.4mm if it snows
Snowfall
0.5 cm
~35% chance
Pressure
1016.4 hPa
Medium volatility
Whistler Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 80% 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
🔴 20 min to burn
Type III-IV
🟡 30 min to burn
Type V-VI
🟢 50 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
9.7°C
Dry air
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
93/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~407
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Whistler
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:19
☀️ Noon
12:09
🌇 Sunset
20:00
⏱️ Daylight
15h 41m
Wind Speed
6.5 km/h
Light breeze
Sunshine
10.8 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
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Whistler
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
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 May 21 averages 13.9°C with a 35% precipitation probability. Wedding/Outdoor Event Score: 78/100."
— 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
May 14
14.7°C • 29% rain
Score
85
May 15
14.5°C • 31% rain
Score
83
May 23
14.4°C • 31% rain
Score
83
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 21) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Whistler Worth Visiting on May 21?
Planning a trip to Whistler on May 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 13.9°C with a 35% historical precipitation risk.
✈️ Travel Logistics: Approximately 407 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 May 21 recorded in the last 30 years saw temperatures hit 22.5°C in 2017, while the coldest dropped to 1°C in 2021.