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Great Lakes - Lake Erie and Lake Ontario: Past 24 Hour Conditions

Warnings

 

Lake Simcoe - 45151

10:00 PM EDT 21 July 2026Buoy position: 44.5N 79.37W
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)
21 July 2026
22:00 WNW 15 gusts 18 0.30 2.5 100.3 20 22
21:00 WNW 11 gusts 15 0.26 2.2 100.2 21 22
20:00 W 12 gusts 16 0.19 1.9 100.1 21 22
19:00 WNW 10 gusts 11 0.20 2.2 100.1 22 22
18:00 WSW 7 gusts 9 0.27 2.4 100.1 20 22
17:00 SW 10 gusts 12 0.34 2.7 100.1 20 22
16:00 S 11 gusts 13 0.41 3.0 100.0 21 22
15:00 SSE 14 gusts 21 0.23 2.4 100.0 21 22
14:00 SSW 10 gusts 22 0.19 1.9 99.9 22 22
13:00 N/A N/A N/A N/A N/A N/A
12:00 SW 9 gusts 13 0.44 3.2 100.0 20 22
11:00 S 13 gusts 17 0.49 3.0 100.0 22 22
10:00 S 15 gusts 18 0.50 2.8 100.1 22 22
9:00 SSW 15 gusts 19 0.57 3.1 100.1 21 22
8:00 SSW 18 gusts 23 0.84 3.8 100.2 21 22
7:00 SSW 18 gusts 23 0.97 4.5 100.1 21 22
6:00 S 14 gusts 23 0.54 2.9 100.1 20 22
5:00 S 12 gusts 16 0.42 2.9 100.4 20 22
4:00 S 12 gusts 15 0.52 3.2 100.5 21 22
3:00 S 12 gusts 15 0.57 3.0 100.6 21 22
2:00 S 19 gusts 22 0.56 2.9 100.5 21 22
1:00 S 14 gusts 18 0.49 2.9 100.7 22 22
0:00 S 16 gusts 19 0.53 3.1 100.7 22 22
20 July 2026
23:00 SSW 14 gusts 17 0.46 2.9 100.8 23 23
22:00 SSW 15 gusts 17 0.47 2.9 100.8 23 23

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

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