Cool
Average highs are around 19°C, so pack for cooler days.
May verdict
Cornwall (Ontario), Canada in May
Weather score43Mixed
Mixed for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 6.9h per day, enough for a balanced month. Rainfall averages 73mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
19°C
Rain
73mm
Sun
6.9h
Weather score
43
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 73mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.9h per day, enough for a balanced month.
Map
Weather map
Compare Cornwall (Ontario), Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May19°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
May73mm average rain
May sits on the drier side of Cornwall (Ontario)'s year, which helps with sightseeing and transfers.
Driest monthsJanuary to July and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May6.9 hours average sun
May is brighter than Cornwall (Ontario)'s yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
May43 weather score
May sits close to Cornwall (Ontario)'s yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
Hotels near Cornwall (Ontario), Canada
Marriott
Courtyard Montreal West Island/Baie D’UrfeBaie D'Urfe, Quebec, Canada
Fairfield Inn & Suites Ottawa AirportOttawa, Ontario, Canada
Residence Inn Ottawa AirportOttawa, Ontario, Canada
Courtyard Ottawa EastOttawa, Ontario, Canada
TownePlace Suites by Marriott Ottawa BarrhavenOttawa, Ontario, Canada
AC Hotel Ottawa DowntownOttawa, Ontario, Canada