St. Lawrence - St. Lawrence River: Past 24 Hour Conditions

Lake Nipissing - 45152

02:00 AM EDT 15 August 2026Buoy position: 46.23N 79.72W

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.

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)
15 August 2026
2:00	ESE 6 gusts 9	0.10	1.8	102.4	20	23
1:00	SE 4 gusts 5	0.14	2.2	102.4	19	23
0:00	S 7 gusts 8	0.21	2.1	102.3	20	23
14 August 2026
23:00	E 8 gusts 10	0.26	2.2	102.3	22	23
22:00	ENE 10 gusts 12	0.27	2.4	102.2	22	23
21:00	ENE 12 gusts 14	0.30	2.4	102.2	22	23
20:00	ENE 11 gusts 12	0.24	2.2	102.1	23	23
19:00	NE 9 gusts 12	0.22	2.3	102.1	23	23
18:00	N 11 gusts 15	0.19	2.1	102.1	23	24
17:00	N 9 gusts 12	0.16	2.1	102.1	23	24
16:00	N 9 gusts 14	0.18	2.1	102.1	23	24
15:00	NNE 6 gusts 12	0.05	1.7	102.1	23	25
14:00	SE 1 gusts 3	0.08	1.7	102.1	23	25
13:00	SE 3 gusts 3	0.14	2.0	102.1	22	23
12:00	E 5 gusts 8	0.20	2.2	102.0	21	23
11:00	ENE 6 gusts 10	0.19	2.1	102.0	21	23
10:00	NE 6 gusts 8	0.22	2.0	102.0	20	23
9:00	NE 8 gusts 10	0.13	1.7	101.9	19	23
8:00	NE 5 gusts 6	0.09	1.7	101.9	19	23
7:00	ENE 4 gusts 5	0.07	1.7	101.8	20	23
6:00	SE 2 gusts 4	0.06	1.7	101.8	20	23
5:00	NW 3 gusts 4	0.03	1.6	101.7	20	23
4:00	NNW 5 gusts 6	0.04	1.6	101.7	20	23
3:00	NNW 4 gusts 5	0.06	1.8	101.7	21	23
2:00	N 6 gusts 7	0.10	1.9	101.7	20	23

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

Select a location below:

Zoom-in to make a selection

Map of St. Lawrence - St. Lawrence River marine weather areas

Legend:

Buoy

Land Station

» Tides and Water Levels

St. Lawrence - St. Lawrence River Area

Another Region

Marine Weather for Canada

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.