About St. Catherines
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COORDINATES
43.18966 N, -79.31605 E
Port Information
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Weather Forecast
Tue
5AM - 9AM
19 May 2026
SW 11–14 knots. Gusts up to 23 knots.
13°C
Calm sea
UV Index: 0 - Low
Cloudy
Tue
9AM - 1PM
19 May 2026
- SW 10–14 knots. Gusts up to 18 knots.
- 13 to 17°C
- Calm sea
- UV Index: 8 - Very High
- Cloudy
Tue
1PM - 5PM
19 May 2026
- SW 13 knots increasing to 16 knots. Gusts up to 23 knots.
- 16 to 19°C
- Calm sea
- UV Index: 8 - Very High
- Partly cloudy
Tue
5PM - 9PM
19 May 2026
- SW 16 knots decreasing to 12 knots. Gusts up to 23 knots.
- Decreasing from 19 to 16°C
- Calm sea
- UV Index: 0 - Low
- Chance of showers
Tue
9PM - 5AM
19 May 2026
- SW 12 knots increasing to NW 15 knots. Gusts up to 22 knots.
- 10 to 16°C
- Calm sea
- UV Index: 0 - Low
- Chance of showers
Wed
5AM - 9AM
20 May 2026
- NW 8–15 knots. Gusts up to 19 knots.
- 8 to 11°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Wed
9AM - 1PM
20 May 2026
- W 8 knots.
- 8 to 12°C
- Calm sea
- UV Index: 7 - High
- Cloudy
Wed
1PM - 5PM
20 May 2026
- W 5–11 knots.
- 10 to 13°C
- Calm sea
- UV Index: 7 - High
- Cloudy
Wed
5PM - 9PM
20 May 2026
- NW 8 knots increasing to 11 knots.
- 9 to 13°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Wed
9PM - 5AM
20 May 2026
- NW 9 knots decreasing to 6 knots. Gusts up to 17 knots.
- 1 to 11°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy
Thu
5AM - 9AM
21 May 2026
- NE 4–11 knots.
- Increasing from 3 to 8°C
- Calm sea
- Mostly fine
Thu
9AM - 1PM
21 May 2026
- NE 5–11 knots.
- Increasing from 8 to 12°C
- Calm sea
- Mostly fine
Thu
1PM - 5PM
21 May 2026
- NE 5–9 knots.
- 7 to 18°C
- Calm sea
- Mostly fine
Thu
5PM - 9PM
21 May 2026
- NE 5–7 knots.
- 8 to 18°C
- Calm sea
- Partly cloudy
Thu
9PM - 5AM
21 May 2026
- E 4–8 knots.
- 8 to 11°C
- Calm sea
- Cloudy
Fri
5AM - 9AM
22 May 2026
- SE 6 knots increasing to 9 knots.
- Increasing from 8 to 12°C
- Calm sea
- Cloudy
Fri
9AM - 1PM
22 May 2026
- SE 10–13 knots. Gusts up to 17 knots.
- 9 to 22°C
- Calm sea
- Cloudy
Fri
1PM - 5PM
22 May 2026
- E 5–14 knots.
- 9 to 23°C
- NE 0.5m at 3s period
- Cloudy
Fri
5PM - 9PM
22 May 2026
- E 4–13 knots.
- 10 to 18°C
- NE 0.6m at 3s period
- Cloudy
Fri
9PM - 5AM
22 May 2026
- E 5–12 knots. Gusts up to 21 knots.
- 10 to 14°C
- Calm sea
- Cloudy
Sat
5AM - 9AM
23 May 2026
- E 7–15 knots. Gusts up to 19 knots.
- 10 to 13°C
- Calm sea
- Cloudy
Sat
9AM - 1PM
23 May 2026
- SE 10–15 knots. Gusts up to 18 knots.
- 10 to 15°C
- E 0.4m at 3s period
- Chance of showers
Sat
1PM - 5PM
23 May 2026
- E 9–16 knots veering SE 9-16 knots. Gusts up to 19 knots.
- 10 to 17°C
- NE 0.5m at 3s period
- Chance of showers
Sat
5PM - 9PM
23 May 2026
- S 4–17 knots. Gusts up to 19 knots.
- 10 to 21°C
- NE 0.6m at 4s period
- Chance of showers
Sat
9PM - 5AM
23 May 2026
- S 4–14 knots. Gusts up to 22 knots.
- 10 to 21°C
- NE 0.5m at 4s period
- Cloudy
Sun
5AM - 9AM
24 May 2026
- S 6–13 knots. Gusts up to 21 knots.
- 10 to 20°C
- NE 0.5m at 4s period
- Cloudy
Sun
9AM - 1PM
24 May 2026
- S 6–10 knots. Gusts up to 16 knots.
- Increasing from 16 to 22°C
- NE 0.4m at 4s period
- Partly cloudy
Sun
1PM - 5PM
24 May 2026
- SW 4–11 knots.
- 12 to 30°C
- Calm sea
- Chance of showers
Sun
5PM - 9PM
24 May 2026
- SW 5–10 knots.
- 11 to 30°C
- Calm sea
- Cloudy
Sun
9PM - 5AM
24 May 2026
- SW 1–8 knots.
- 11 to 23°C
- Calm sea
- Cloudy
Mon
5AM - 9AM
25 May 2026
- SW 2–10 knots.
- 10 to 19°C
- Calm sea
- Chance of showers
Mon
9AM - 1PM
25 May 2026
- SW 2–14 knots.
- Increasing from 17 to 22°C
- Chance of showers
Mon
1PM - 5PM
25 May 2026
- SW 2–14 knots.
- 14 to 25°C
- Calm sea
- Chance of showers
Mon
5PM - 9PM
25 May 2026
- S 6–12 knots backing SE 6-12 knots.
- Decreasing from 23 to 19°C
- Calm sea
- Partly cloudy
Mon
9PM - 5AM
25 May 2026
- NW 4–6 knots veering E 4-6 knots.
- 11°C
- Calm sea
- Cloudy
Tue
5AM - 9AM
26 May 2026
- NE 4–8 knots.
- 10°C
- Calm sea
- Cloudy
Tue
9AM - 1PM
26 May 2026
- E 8 knots.
- 11°C
- Cloudy
Tue
1PM - 5PM
26 May 2026
- E 3–8 knots.
- 12°C
- Calm sea
- Cloudy
Tue
5PM - 9PM
26 May 2026
- E 6 knots decreasing to 3 knots.
- 12 to 16°C
- Calm sea
- Cloudy
Tue
9PM - 5AM
26 May 2026
- NE 3–6 knots.
- 11°C
- Calm sea
- Cloudy
Wed
5AM - 9AM
27 May 2026
- NE 4 knots increasing to 6 knots.
- 10 to 12°C
- Calm sea
- Chance of showers
Wed
9AM - 1PM
27 May 2026
- NE 8 knots.
- 11°C
- Chance of showers
Wed
1PM - 5PM
27 May 2026
- E 5–9 knots.
- 12 to 17°C
- Calm sea
- Rain
Wed
5PM - 9PM
27 May 2026
- NE 8 knots increasing to 10 knots.
- 14°C
- Calm sea
- Rain
Wed
9PM - 5AM
27 May 2026
- NE 1–10 knots.
- 12°C
- Calm sea
- Chance of showers
Thu
5AM - 9AM
28 May 2026
- Light and variable.
- 10 to 12°C
- Calm sea
- Cloudy
Thu
9AM - 1PM
28 May 2026
- Light and variable.
- 14°C
- Cloudy
Thu
1PM - 5PM
28 May 2026
- E 5 knots increasing to 7 knots.
- 12 to 15°C
- Calm sea
- Cloudy
Thu
5PM - 9PM
28 May 2026
- E 7 knots decreasing to 3 knots.
- 14°C
- Calm sea
- Cloudy