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Cornwall to Montréal: Past 24 Hour Conditions

Warnings

 

Grimsby - 45139

04:00 AM EDT 07 August 2026Buoy position: 43.27N 79.54W
Disclaimer

This table is a summary of hourly weather conditions for the past 24 hours.
Please note that these observations might not always be representative of weather conditions over their associated marine area.
Date / Time
(EDT)		 Wind(knots) Wave height(m) Wave period(s) Pressure(kPa) Air temp(°C) Water temp(°C)
07 August 2026
4:00 ENE 2 gusts 3 0.05 4.7 101.9 23 22
3:00 W 5 gusts 6 0.05 2.7 N/A 23 22
2:00 NW 5 gusts 5 0.03 4.3 101.9 23 22
1:00 SW 6 gusts 6 0.06 3.6 N/A 23 22
0:00 WSW 6 gusts 7 0.05 4.3 101.9 23 22
06 August 2026
23:00 SSW 6 gusts 8 0.02 4.4 N/A 24 22
22:00 E 4 gusts 6 0.03 1.6 101.9 24 22
21:00 S 1 gusts 2 0.05 4.5 101.9 25 22
20:00 SSW 6 gusts 6 0.03 4.3 101.8 25 22
19:00 SSW 5 gusts 5 0.07 1.7 101.8 26 23
18:00 SSW 8 gusts 9 0.18 2.2 101.8 24 23
17:00 SSW 10 gusts 13 0.06 2.4 101.8 25 24
16:00 ENE 4 gusts 5 0.04 2.7 101.8 25 23
15:00 N/A N/A N/A N/A N/A N/A
14:00 ENE 3 gusts 3 0.03 4.1 101.9 25 23
13:00 N/A N/A N/A N/A N/A N/A
12:00 NW 4 gusts 5 0.05 3.9 101.9 23 22
11:00 N/A N/A N/A N/A N/A N/A
10:00 WNW 5 gusts 6 0.03 2.5 101.8 22 21
9:00 W 4 gusts 5 0.03 3.7 N/A 22 21
8:00 WSW 5 gusts 6 0.03 4.7 N/A 22 21
7:00 SSW 4 gusts 5 0.04 2.1 N/A 21 21
6:00 N/A N/A N/A N/A N/A N/A
5:00 SSW 5 gusts 6 0.06 2.8 101.7 22 21
4:00 WSW 3 gusts 4 0.07 3.2 101.7 21 21

If you require additional historical weather information please visit Fisheries and Oceans Canada

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Map of Great Lakes - Lake Huron marine weather areas Erieau CFB Trenton Muskoka Airport Parry Sound Harbour Toronto City Centre Airport Lake Simcoe Regional Airport Wiarton Airport Point Petre Lagoon City Western Islands Cobourg Port Colborne Windsor Airport Point Pelee Welland-Pelham Vineland Station Burlington Lift Bridge Southeast Shoal St. Catharines / Niagara District Airport Goderich Port Weller Long Point Harrow AAFC Hamilton Munro Int'l Airport Tobermory Sarnia Chris Hadfield Airport Oshawa Executive Airport Collingwood Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Peterborough Municipal Airport Brockville Grenadier Island Kingston Airport
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