About St. Catherines
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COORDINATES
43.18966 N, -79.31605 E
Port Information
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Weather Forecast
Sun
5AM - 9AM
17 May 2026
W 5–8 knots.
11°C
Calm sea
UV Index: 0 - Low
Partly cloudy
Sun
9AM - 1PM
17 May 2026
- Light and variable.
- 11 to 16°C
- Calm sea
- UV Index: 7 - High
- Cloudy
Sun
1PM - 5PM
17 May 2026
- E 7 knots increasing to 10 knots.
- 12 to 17°C
- Calm sea
- UV Index: 7 - High
- Cloudy
Sun
5PM - 9PM
17 May 2026
- E 11 knots decreasing to SE 6 knots.
- 13°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Sun
9PM - 5AM
17 May 2026
- E 1–8 knots.
- 9 to 13°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Mon
5AM - 9AM
18 May 2026
- E 3–6 knots backing NW 3-6 knots.
- 9 to 12°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Mon
9AM - 1PM
18 May 2026
- S 2 knots increasing to 11 knots.
- Increasing from 11 to 16°C
- Calm sea
- UV Index: 8 - Very High
- Cloudy
Mon
1PM - 5PM
18 May 2026
- S 10 knots increasing to 15 knots. Gusts up to 18 knots.
- Increasing from 15 to 19°C
- Calm sea
- UV Index: 8 - Very High
- Partly cloudy
Mon
5PM - 9PM
18 May 2026
- S 15 knots decreasing to 13 knots. Gusts up to 18 knots.
- 16 to 19°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy
Mon
9PM - 5AM
18 May 2026
- SW 13 knots decreasing to 8 knots. Gusts up to 20 knots.
- 13 to 16°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Tue
5AM - 9AM
19 May 2026
- SW 9 knots increasing to 12 knots. Gusts up to 20 knots.
- Increasing from 14 to 17°C
- Calm sea
- Cloudy
Tue
9AM - 1PM
19 May 2026
- SW 11–16 knots. Gusts up to 20 knots.
- 15 to 26°C
- Calm sea
- Partly cloudy
Tue
1PM - 5PM
19 May 2026
- SW 13–19 knots. Gusts up to 24 knots.
- 17 to 27°C
- Calm sea
- Partly cloudy
Tue
5PM - 9PM
19 May 2026
- SW 14–19 knots. Gusts up to 24 knots.
- 16 to 26°C
- Calm sea
- Partly cloudy
Tue
9PM - 5AM
19 May 2026
- SW 10–16 knots. Gusts up to 24 knots.
- 12 to 21°C
- Calm sea
- Cloudy
Wed
5AM - 9AM
20 May 2026
- W 11–13 knots. Gusts up to 23 knots.
- 9 to 18°C
- Calm sea
- Cloudy
Wed
9AM - 1PM
20 May 2026
- W 8–12 knots. Gusts up to 21 knots.
- 9 to 17°C
- Calm sea
- Partly cloudy
Wed
1PM - 5PM
20 May 2026
- W 8–13 knots veering NW 8-13 knots. Gusts up to 17 knots.
- 12 to 18°C
- Calm sea
- Sunny
Wed
5PM - 9PM
20 May 2026
- NW 10–13 knots. Gusts up to 19 knots.
- Decreasing from 17 to 11°C
- Calm sea
- Mostly fine
Wed
9PM - 5AM
20 May 2026
- N 6–10 knots. Gusts up to 19 knots.
- 5 to 11°C
- Calm sea
- Partly cloudy
Thu
5AM - 9AM
21 May 2026
- N 6–10 knots.
- Increasing from 5 to 8°C
- Calm sea
- Partly cloudy
Thu
9AM - 1PM
21 May 2026
- NE 6–10 knots.
- Increasing from 8 to 13°C
- N 0.4m at 2s period
- Partly cloudy
Thu
1PM - 5PM
21 May 2026
- NE 6–8 knots.
- 8 to 19°C
- Calm sea
- Mostly fine
Thu
5PM - 9PM
21 May 2026
- NE 7 knots decreasing to E 5 knots.
- 9 to 19°C
- Calm sea
- Mostly fine
Thu
9PM - 5AM
21 May 2026
- E 3–8 knots.
- Decreasing from 11 to 5°C
- Calm sea
- Partly cloudy
Fri
5AM - 9AM
22 May 2026
- E 3–10 knots.
- Increasing from 5 to 12°C
- Calm sea
- Cloudy
Fri
9AM - 1PM
22 May 2026
- E 3–13 knots.
- Increasing from 13 to 22°C
- Calm sea
- Partly cloudy
Fri
1PM - 5PM
22 May 2026
- E 6–13 knots.
- 10 to 26°C
- NE 0.6m at 3s period
- Partly cloudy
Fri
5PM - 9PM
22 May 2026
- E 10 knots decreasing to 4 knots.
- 10 to 22°C
- NE 0.6m at 3s period
- Partly cloudy
Fri
9PM - 5AM
22 May 2026
- Light and variable.
- 10 to 18°C
- Calm sea
- Partly cloudy
Sat
5AM - 9AM
23 May 2026
- S 4–7 knots.
- Increasing from 11 to 15°C
- Calm sea
- Partly cloudy
Sat
9AM - 1PM
23 May 2026
- S 7 knots decreasing to 5 knots.
- 16 to 26°C
- Cloudy
Sat
1PM - 5PM
23 May 2026
- S 2–7 knots.
- 12 to 27°C
- Calm sea
- Cloudy
Sat
5PM - 9PM
23 May 2026
- Light and variable.
- 12 to 26°C
- Calm sea
- Chance of showers
Sat
9PM - 5AM
23 May 2026
- S 4–6 knots.
- 8 to 11°C
- Calm sea
- Cloudy
Sun
5AM - 9AM
24 May 2026
- Light and variable.
- 10°C
- Calm sea
- Cloudy
Sun
9AM - 1PM
24 May 2026
- S 4 knots.
- 11°C
- Mostly fine
Sun
1PM - 5PM
24 May 2026
- E 6 knots.
- 11 to 14°C
- Calm sea
- Mostly fine
Sun
5PM - 9PM
24 May 2026
- E 6–8 knots veering SE 6-8 knots.
- 12 to 16°C
- Calm sea
- Sunny
Sun
9PM - 5AM
24 May 2026
- E 4–8 knots.
- 9 to 12°C
- Calm sea
- Mostly fine
Mon
5AM - 9AM
25 May 2026
- NE 8 knots decreasing to 5 knots.
- 9°C
- Calm sea
- Mostly fine
Mon
9AM - 1PM
25 May 2026
- E 6 knots.
- 11°C
- Cloudy
Mon
1PM - 5PM
25 May 2026
- E 6 knots decreasing to 3 knots.
- 10 to 13°C
- Calm sea
- Cloudy
Mon
5PM - 9PM
25 May 2026
- SW 3 knots increasing to 5 knots.
- Increasing from 13 to 15°C
- Calm sea
- Chance of showers
Mon
9PM - 5AM
25 May 2026
- W 5–10 knots.
- 11 to 16°C
- Calm sea
- Chance of showers
Tue
5AM - 9AM
26 May 2026
- NW 6–10 knots.
- 11 to 14°C
- Calm sea
- Partly cloudy
Tue
9AM - 1PM
26 May 2026
- NW 10 knots.
- 13°C
- Cloudy
Tue
1PM - 5PM
26 May 2026
- NE 8 knots decreasing to 4 knots.
- Increasing from 12 to 16°C
- Calm sea
- Mostly fine
Tue
5PM - 9PM
26 May 2026
- NE 4 knots increasing to 11 knots.
- 13 to 16°C
- NE 0.5m at 3s period
- Sunny