Language selection

Government of Canada / Gouvernement du Canada

Search

Features

Colour-coded Weather Alerts

Colour-coded Weather Alerts

Weather shortcuts

Southern Georgian Bay: Past 24 Hour Conditions

Warnings

 

Grenadier Island

11:00 PM EST 11 December 2025
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
(EST)		 Wind(knots) Conditions Visibility(km) Pressure(kPa) Air temp(°C) Relative humidity(%) Dew point(°C) Wind Chill
11 December 2025
23:00 WSW 4 N/A N/A 101.0 -11 77 -15 -16
22:00 WSW 3 N/A N/A 100.9 -11 76 -15 -15
21:00 WSW 3 N/A N/A 100.9 -11 75 -15 -15
20:00 WSW 4 N/A N/A 100.8 -10 74 -14 -14
19:00 W 3 N/A N/A 100.7 -10 74 -13 -13
18:00 W 4 N/A N/A 100.6 -9 75 -13 -13
17:00 WSW 5 N/A N/A 100.5 -9 78 -12 -13
16:00 WSW 4 N/A N/A 100.5 -9 77 -12 -13
15:00 WSW 5 N/A N/A 100.4 -9 73 -13 -13
14:00 SW 5 N/A N/A 100.3 -9 67 -14 -13
13:00 WSW 5 N/A N/A 100.3 -8 69 -13 -13
12:00 WSW 4 N/A N/A 100.3 -10 75 -14 -14
11:00 WSW 3 N/A N/A 100.3 -11 76 -14 -14
10:00 WSW 5 N/A N/A 100.3 -11 75 -15 -16
9:00 calm N/A N/A 100.3 -11 78 -14 *
8:00 calm N/A N/A 100.2 -12 81 -14 *
7:00 calm N/A N/A 100.1 -10 81 -13 *
6:00 calm N/A N/A 100.0 -9 81 -12 *
5:00 calm N/A N/A 99.9 -7 85 -9 *
4:00 calm N/A N/A 99.8 -6 91 -7 *
3:00 calm N/A N/A 99.7 -5 88 -7 *
2:00 calm N/A N/A 99.6 -5 89 -6 *
1:00 calm N/A N/A 99.4 -4 93 -5 *
0:00 calm N/A N/A 99.4 -4 94 -5 *
10 December 2025
23:00 calm N/A N/A 99.2 -4 94 -5 *

If you require additional historical weather information, please visit Climate Data Online

Zoom-in to make a selection

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

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

Weather shortcuts


How to use
  • Add to shortcuts
    • Go to the desired page on the site, open the Weather shortcuts menu and click on the "Add to shortcuts" button
    • Page name will display in the "Add this page" window, the name can be changed by highlighting the text and entering the desired name
    • Click on the "Save" button to add the link to the list
    • Click on the "X" button to close the panel
  • Delete a link
    • Click on the "Organize shortcuts" button
    • Select the link to delete
    • Click on the "Delete" button to remove the link from the list
    • Click on the "Close" button to save the change
  • Move a link up/down the list
    • Click on the "Organize shortcuts" button
    • Click and hold the link and move to new location in the list
    • Click on the "Close" button to save the change
  • Rename a link
    • Click on the "Organize shortcuts" button
    • Select the link to rename
    • Click on the "Rename" button and change the link name
    • Click the enter or tab key
    • Click on the "Close" button to save the change
  • Keyboard navigation
    • Use the Tab key to move to a button or link
    • Use the Enter key to click on buttons or links
    • Organize shortcuts navigation
      • Use the ↑ Up key to select the link above. If none are selected, it will select the first link.
      • Use the ↓ Down key to select the link below. If none are selected, it will select the last link.
      • Use the Page Up key to move a selection up in the list.
      • Use the Page Down key to move a selection down in the list.
  • Restore default list

    Warning: Clicking on the button below will remove all your customized links.

Customized Weather shortcuts

Save your customized list as a bookmark.

Copy/paste or click on the link below then when the page displays, you can bookmark the page using the web browser. Bookmarking your customized list will allow you to access it even if the local storage on your device is erased.

Feedbackabout this web site
Date modified: