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Waterloo Weather in May
During May, Waterloo experiences pleasant daytime temperatures of 20°C (68°F) and cooler nights around 8°C (46°F). Expect quite a bit of rainfall. Around 93 mm (3.7 in) is typical.
Rainfall in Waterloo in May
Typically around 11 days of rainfall are expected, averaging 93 mm (3.7 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Waterloo in May
May is one of the better months to visit Waterloo. Expect 20°C (68°F) during the day and 8°C (46°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Waterloo in May
Expect sunny days throughout the month, with an estimated 245 hours of sunshine. This makes it a pleasant time to visit Waterloo.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Waterloo Temperature in May
Min Temperature
8°C (46°F)
Max Temperature
20°C (68°F)
Chance of Rain
38%
Precipitation
93 mm (3.7 in)
Rainy days
11 days
Sunshine
245 hours *
Percentage Sunshine
54% *
* Data from: Hamilton, Canada (57 KM, 35 Miles).
Waterloo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Waterloo - and find the best time to visit.
Best Places in Canada in May
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Waterloo in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Waterloo in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping4/10 -
Outdoor sports9/10
Waterloo 3-Day Forecast
More climate data for Waterloo
See the full Waterloo climate overview or explore weather in Canada.
Popular in May
Where to go in May - average daytime high across popular destinations.
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