August 20 is statistically one of the best days of the year in Banff. With minimal rain risk (14%) and pleasant highs of 21°C, it's ideal for outdoor adventures. Banff is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Banff
Currency
CAD
$ Canadian dollar
Language
English
+1 more
Driving
Right side
Connect
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Safety
Very High Safety
GPI: 1.389
Banff Weather Forecast for August 20
"Mild & Comfortable. Expect average highs of 21.3°C. 14% chance of rain."
What to Wear in Banff in August
Based on historical data for August 20, Banff typically experiences temperatures between 8.5°C and 21.3°C. We recommend packing light jacket, long pants, layers (onion system) to stay comfortable. Trends suggest it will stay mostly dry (14% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Banff
Smart Suitcase
- Light Jacket
- Long Pants
- Layers (Onion System)
Average High
21.3°C
Daytime Peak
Average Low
8.5°C
Nighttime Low
Feels Like
21.4°C
☀️ Feels accurate
Rain Chance
14%
Avg 0.8mm if it rains
Cloud Cover
51%
Overcast
Pressure
1014.2 hPa
Medium volatility
Banff Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 90% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
05:00 - 10:00
16:00 - 19:00
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
14.2°C
Pleasant
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
91/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~266
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Banff
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:38
☀️ Noon
12:47
🌇 Sunset
19:56
⏱️ Daylight
14h 18m
Wind Speed
10.9 km/h
Light breeze
Sunshine
11.8 hrs
Direct Sun (Cloud-free)
Humidity
64%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Banff
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Banff
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🔴 Very 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, Banff on August 20 averages 21.3°C with a 14% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Banff Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (August 20) in other destinations
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📍 Is Banff Worth Visiting on August 20?
Planning a trip to Banff on August 20? 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 14% historical precipitation risk.
✈️ Travel Logistics: Approximately 266 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 August 20 recorded in the last 30 years saw temperatures hit 26°C in 2022, while the coldest dropped to 3°C in 2023.