May weather forecastToronto, Canada
May
Weather in May
The gradual warming trend continues into May, with the transition into summer well on its way. With more outdoor activities available, the city feels alive with street fairs, art shows, and al fresco dining. Both locals and tourists flock to the numerous parks and nearby trails for walks, bike rides, and picnics. Make the most of the moderate weather, before the heat wave of summer overtakes Toronto. May is also known for being a great month for birdwatching as numerous migratory species pass through the city.Temperature
The arrival of May in Toronto signals an increase in the average high-temperature, moving from a chilly 8.8°C (47.8°F) in April to a mild 15.4°C (59.7°F). Toronto experiences a mean temperature of 8.8°C (47.8°F) during May nights.Humidity
In May, the average relative humidity is 76%.Rainfall
In Toronto, during May, the rain falls for 14.8 days and regularly aggregates up to 48mm (1.89") of precipitation. Throughout the year, there are 136.8 rainfall days, and 420mm (16.54") of precipitation is accumulated.Snowfall
In Toronto, snow does not fall in May through October.Sea temperature
In May, the average sea temperature is 5.8°C (42.4°F).Note: Swimming in 5.8°C (42.4°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
In Toronto, the average length of the day in May is 14h and 44min.On the first day of the month, sunrise is at 6:08 am and sunset at 8:20 pm. On the last day of May, in Toronto, sunrise is at 5:38 am and sunset at 8:51 pm EDT.
Sunshine
In May, the average sunshine in Toronto is 9h.UV index
The average daily maximum UV index in May in Toronto is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 4 during May morphs into the following directions:
Take necessary precautions - Defending against sun damage is advocated. When the Sun is at its strongest around midday, find shade and limit exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Toronto, Canada
- Average high temperature in May: 15.4°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-2.3°C).
- Average low temperature in May: 8.8°C
The months with the highest average low temperature are July and August (18.4°C).
The coldest month (with the lowest average low temperature) is January (-7°C).
Average pressure in May
Toronto, Canada
- Average pressure in May: 1015.3mbar
The month with the highest atmospheric pressure is March (1018.4mbar).
The month with the lowest atmospheric pressure is June (1013.1mbar).
Average wind speed in May
Toronto, Canada
- Average wind speed in May: 13.3km/h
The windiest month (with the highest average wind speed) is January (19.5km/h).
The calmest month (with the lowest average wind speed) is July (11.7km/h).
Average humidity in May
Toronto, Canada
- Average humidity in May: 76%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in May
Toronto, Canada
- Average rainfall in May: 48mm
The wettest month (with the highest rainfall) is July (53mm).
The driest month (with the least rainfall) is February (19mm).
Average rainfall days in May
Toronto, Canada
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in May
Toronto, Canada
- Average snowfall in May: 0mm
The month with the highest snowfall is January (57mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Toronto, Canada
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Toronto, Canada
- Average sea temperature in May: 5.8°C
The best month for swimming (with the highest average sea temperature) is August (22.3°C).
The coldest month (with the lowest average sea temperature) is March (1.9°C).
Average daylight in May /
Average sunshine in May
Toronto, Canada
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in May
Toronto, Canada
- Average sunshine days in May: 13.9 days
The month with the most sunshine days is March (16.2 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in May
Toronto, Canada
- Average UV index in May: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Toronto, Canada
- Average cloud cover in May: 38
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in May
Toronto, Canada
- Average visibility in May: 9km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).
