August 18 is generally a great time to visit Banff. While there is a slight chance of rain (19%), showers are usually brief. Expect comfortable 22°C weather. Expect a bustling atmosphere in Banff right now—this is when the city truly comes alive with visitors. Note: August 18 is Discovery Day in Banff, so expect special events, closures, and festive atmosphere.
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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 18
"Mild & Comfortable. Expect average highs of 21.5°C. 19% chance of snow."
What to Wear in Banff in August
Based on historical data for August 18, Banff typically experiences temperatures between 8.7°C and 21.5°C. We recommend packing light jacket, long pants, layers (onion system) to stay comfortable. Trends suggest it will stay mostly dry (19% 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
21.5°C
Daytime Peak
Average Low
8.7°C
Nighttime Low
Feels Like
21.7°C
☀️ Feels accurate
Snow Chance
19%
Avg 1.2mm if it snows
Snowfall
0.1 cm
~19% chance
Pressure
1014.6 hPa
Medium volatility
Banff 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 30 recommended
05:00 - 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
14.6°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Holiday
Discovery Day
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
05:34
☀️ Noon
12:47
🌇 Sunset
20:00
⏱️ Daylight
14h 25m
Wind Speed
10.1 km/h
Light breeze
Sunshine
11.8 hrs
Direct Sun (Cloud-free)
Humidity
65%
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 18 averages 21.5°C with a 19% precipitation probability. Wedding/Outdoor Event Score: 97/100."
— 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
Better Alternatives Nearby
Consider these dates within ±7 days
August 19
21.4°C • 14% rain
Score
100
August 20
21.3°C • 14% rain
Score
100
August 22
20.4°C • 15% rain
Score
100
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 18) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Banff Worth Visiting on August 18?
Planning a trip to Banff on August 18? 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 21.5°C with a 19% historical precipitation risk.
🎉 Local Event: The date coincides with Discovery Day, which may influence local business hours and event availability.
✈️ 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 18 recorded in the last 30 years saw temperatures hit 30.7°C in 2022, while the coldest dropped to 4.4°C in 2021.