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Ontario Weather May
To help you choose the best time to travel, you can find climate data below on the weather in Ontario in May.
| Ontario Weather May: | Niagara Falls | Toronto | |
 | average daily high | +19.4°C | +18.4°C |
 | average daily low | +7.7°C | +9.9°C |
 | sea temperature | +5.9°C | |
 | daylight hours | 15.3h | 15.3h |
 | sunny/overcast hours | 7.4/7.9h | |
 | average monthly precipitation | 87 mm | 82 mm |
Temperature in Ontario
The average daily maximum in May is +19.4 — +18.4°C, and the minimum +7.7 — +9.9°C.
Best places in Ontario:
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Sea temperature
The average monthly temperature in Lake Ontario on the beaches of Toronto in May is +5.9 degrees.
The water is very cold and only suitable to bathe in shortly for the most hardy people.
Precipitation
The normal amount of precipitation for May is from 82 to 87 mm, which may cause a change of plans on certain days.