May 31 is generally a great time to visit Toronto. While there is a slight chance of rain (22%), showers are usually brief. Expect comfortable 21°C weather. It's a great middle-ground for visiting Toronto—enough activity to feel the pulse, but no overwhelming lines.
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Essential Travel Info for Toronto
Currency
CAD
$ Canadian dollar
Language
English
+1 more
Driving
Right side
Connect
Calling...
Safety
Very High Safety
GPI: 1.389
Toronto Weather Forecast for May 31
"Mild & Comfortable. Expect average highs of 20.9°C. 22% chance of rain."
What to Wear in Toronto in May
Based on historical data for May 31, Toronto typically experiences temperatures between 12°C and 20.9°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (22% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Toronto
Smart Suitcase
- Light Jacket
- Long Pants
Average High
20.9°C
Daytime Peak
Average Low
12°C
Nighttime Low
Feels Like
21°C
☀️ Feels accurate
Rain Chance
22%
Avg 1.5mm if it rains
Cloud Cover
56%
Overcast
Pressure
1014.1 hPa
Medium volatility
Toronto 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
04:00 - 10:00
16:00 - 19:00
Type I-II
🔴 16 min to burn
Type III-IV
🟡 24 min to burn
Type V-VI
🟢 40 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
14.8°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
Moderate
44/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~650
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Toronto
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
04:40
☀️ Noon
12:16
🌇 Sunset
19:52
⏱️ Daylight
15h 11m
Wind Speed
18.1 km/h
Gentle breeze
Sunshine
11.6 hrs
Direct Sun (Cloud-free)
Humidity
68%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Toronto
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 Toronto
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
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
Zero seismic activity detected in 30 years.
Atlantic Hurricane Risk
Season: Jun - Nov
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Toronto on May 31 averages 20.9°C with a 22% precipitation probability. Wedding/Outdoor Event Score: 96/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Toronto Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
June 5
21.1°C • 19% rain
Score
98
May 24
19.5°C • 19% rain
Score
97
May 27
20.3°C • 23% rain
Score
97
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (May 31) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Toronto Worth Visiting on May 31?
Planning a trip to Toronto on May 31? 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 20.9°C with a 22% historical precipitation risk.
✈️ Travel Logistics: Approximately 650 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 6 vaccinations are recommended for Canada, including COVID-19.
📊 Historical Extremes: The hottest May 31 recorded in the last 30 years saw temperatures hit 29.2°C in 2022, while the coldest dropped to 5.8°C in 2021.