Toronto weather in May
May in Toronto: cool, a little rain — an excellent time to visit.
#5 of 12 months in Toronto · #353 of 604 destinations to visit in May · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Toronto climate normals — May
| Daytime high | 16°C / 60°F | 🙂 cool |
|---|---|---|
| Nighttime low | 8°C / 46°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 65 mm / 2.6 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 69% | 💧 humid |
| Dew point | 7°C / 44°F | |
| Sunshine | 10.6 h/day | |
| Daylight | 14.7 h | |
| Wind | 18 km/h / 11 mph | |
| Snowfall | 0.1 cm / 0 in | |
| Air quality (US AQI) | 69 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Toronto?
Loading map…
Toronto in May — FAQ
- Is May a good time to visit Toronto?
- May in Toronto: cool, a little rain — an excellent time to visit. It ranks #5 of 12 months for Toronto on SeasonMap's comfort score (80/100).
- What is the weather like in Toronto in May?
- In May, Toronto averages a daily high of 15.7°C and a low of 7.9°C, with about 64.8 mm of rain over roughly 10.2 rainy days.
- What is the air quality in Toronto in May?
- Toronto has a mean US Air Quality Index of about 69 in May.