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Grimsby Weather in May
In Grimsby, May brings moderate daytime temperatures around 17°C (63°F), with nights cooling to 9°C (48°F). Expect quite a bit of rainfall this month.
Rainfall in Grimsby in May
Records from the past 30 years suggest around 11 days of rain, with 86 mm (3.4 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Grimsby in May
Temperatures in Grimsby in May top out at 17°C (63°F) and drop to 9°C (48°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Grimsby in May
Expect a lot of sunshine this month, with about 245 hours of sun. These sunny conditions add to the overall experience.If you prefer dry days with pleasant temperatures, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Grimsby Temperature in May
Min Temperature
9°C (48°F)
Max Temperature
17°C (63°F)
Chance of Rain
38%
Precipitation
86 mm (3.4 in)
Rainy days
11 days
Sunshine
245 hours *
Percentage Sunshine
54% *
* Data from: Hamilton, Canada (26 KM, 16 Miles).
Grimsby Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grimsby - 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 Grimsby 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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Grimsby in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports9/10
Grimsby 3-Day Forecast
More climate data for Grimsby
See the full Grimsby 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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