Weather in Toronto in May 2025
Average weather
Average temperature in Toronto in May
The expected average maximum temperature in May is +19°C with a maximum of +29°C and a minimum of +2°C.
The average maximum temperature goes up 74% by the end of the month, compared with the beginning of the month, from +9°C to +29°C.
Is Toronto warm or cold in May?
Toronto is typically mild in May.
Maximum temperatures go up compared to the previous month from +10°C to +17°C. The minimum temperature also goes up from +3°C to +9°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Toronto:
Water temperature in Toronto in May
Water in Toronto in May is Cold. It varies from +3°C to +9°C, with an average of +6°C. The air temperature averaging +17°C is higher than the water temperature.
In May, water temperatures are average relative to the rest of the year:
Can you swim in Toronto in May?
Climate in Toronto in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +10°C | +17°C | +22°C | ||||
| Min. temperature | ||||||
| -10°C | -2°C | +4°C | ||||
| Max. temperature | ||||||
| +27°C | +33°C | +34°C | ||||
| Rainfall | ||||||
| 80 mm | 77 mm | 81 mm | ||||
| Wind | ||||||
| 5 m/s | 4 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +3°C | +6°C | +14°C | ||||
| Humidity | ||||||
| 67% | 68% | 70% | ||||
| Air pressure | ||||||
| 1014 HPa | 1014 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 7 | 8 | 8 | ||||
| Cloudy days | ||||||
| 8 | 8 | 8 | ||||
| Rainy days | ||||||
| 12 | 13 | 11 | ||||
| Snowy days | ||||||
| 3 | 0 | 0 | ||||
May often has better weather than April. It’s getting warmer as May arrives. The average maximum temperature goes up from +10°C to +17°C during the day. As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 80 mm to 77 mm. Humidity rises from 67% to 68%. Winds are calmer in comparison to April, going down from 5 m/s to 4 m/s on average. The good news is there are likely to be more sunny days in May, from 7 to 8.
June brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Toronto is gradually decreasing during May, going from 5 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in Toronto?
Climate Change over Years
The climate in Toronto in May has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+11°C) and the highest in 2012 (+15°C). The driest year was 1994 with only 432 mm of rainfall, and the wettest year was 2023 with 1271 mm.
FAQ
Is May a good time to visit Toronto?
Can you sunbathe in Toronto in May?
Can you swim in Toronto in May?
Is Toronto rainy in May?
Is it sunny in Toronto in May?
Other cities in Canada
Monthly weather in Toronto
Source of the data
For this page, we’ve looked at the typical weather in Toronto, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.