August 3 is generally a great time to visit Montreal. While there is a slight chance of rain (33%), showers are usually brief. Expect comfortable 26°C weather. Expect a bustling atmosphere in Montreal right now—this is when the city truly comes alive with visitors.
View the full calendar
Essential Travel Info for Montreal
Currency
CAD
$ Canadian dollar
Language
English
+1 more
Driving
Right side
Connect
Montreal has four area codes: the long-s...
Safety
Very High Safety
GPI: 1.389
Montreal Weather Forecast for August 3
"Warm & Sunny. Expect average highs of 25.8°C. 33% chance of rain."
What to Wear in Montreal in August
Based on historical data for August 3, Montreal typically experiences temperatures between 17.5°C and 25.8°C. We recommend packing t-shirt, light clothing, umbrella to stay comfortable. With a 33% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Montreal
Smart Suitcase
- T-Shirt
- Light Clothing
- Umbrella
Average High
25.8°C
Daytime Peak
Average Low
17.5°C
Nighttime Low
Feels Like
26.7°C
☀️ Feels accurate
Rain Chance
33%
Avg 2.7mm if it rains
Cloud Cover
56%
Overcast
Pressure
1014.4 hPa
Medium volatility
Montreal Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 96% 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 - 19:00
Type I-II
🔴 21 min to burn
Type III-IV
🟡 32 min to burn
Type V-VI
🟢 53 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
20.6°C
Humid/Sticky
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Morning hours (before 11 AM)
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Canada
Flight Traffic
High
90/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~307
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Montreal
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:41
☀️ Noon
12:01
🌇 Sunset
19:21
⏱️ Daylight
14h 40m
Wind Speed
15.7 km/h
Gentle breeze
Sunshine
11.3 hrs
Direct Sun (Cloud-free)
Humidity
73%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Montreal
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 Montreal
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
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 acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Montreal on August 3 averages 25.8°C with a 33% precipitation probability. Wedding/Outdoor Event Score: 93/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Montreal Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
July 30
25.5°C • 25% rain
Score
97
July 31
25.5°C • 26% rain
Score
97
July 28
25.7°C • 30% rain
Score
96
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 3) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Montreal Worth Visiting on August 3?
Planning a trip to Montreal on August 3? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year typically offers vibrant summer conditions averaging 25.8°C with a 33% historical precipitation risk.
✈️ Travel Logistics: Approximately 307 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 3 recorded in the last 30 years saw temperatures hit 29.6°C in 2024, while the coldest dropped to 13.3°C in 2022.