About St. Catherines
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COORDINATES
43.18966 N, -79.31605 E
Port Information
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Weather Forecast
Mon
9AM - 1PM
20 July 2026
SW 7–13 knots veering W 7-13 knots.
Increasing from 21 to 24°C
Calm sea
Sunny
Mon
1PM - 5PM
20 July 2026
- W 7 knots increasing to S 11 knots.
- 23 to 26°C
- Calm sea
UV Index: 8 - Very High- Sunny
Mon
5PM - 9PM
20 July 2026
- S 8–16 knots.
- 23 to 26°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Mon
9PM - 5AM
20 July 2026
- S 9 knots increasing to 12 knots. Gusts up to 24 knots.
- 20 to 23°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Tue
5AM - 9AM
21 July 2026
- S 13 knots increasing to 15 knots. Gusts up to 25 knots.
- 20 to 23°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Tue
9AM - 1PM
21 July 2026
- SW 16 knots increasing to 18 knots. Gusts up to 26 knots.
- 22 to 25°C
- SW 0.6m at 3s period
- UV Index: 3 - Moderate
- Chance of showers
Tue
1PM - 5PM
21 July 2026
- SW 17–20 knots. Gusts up to 25 knots.
- 23°C
- SW 0.5m at 3s period
- UV Index: 4 - Moderate
- Chance of showers
Tue
5PM - 9PM
21 July 2026
- SW 17 knots decreasing to 10 knots. Gusts up to 24 knots.
- 23°C
- Calm sea
- UV Index: 0 - Low
- Chance of showers
Tue
9PM - 5AM
21 July 2026
- W 12 knots increasing to 19 knots. Gusts up to 24 knots.
- 16 to 22°C
- W 0.2-0.6m at 2s period
- UV Index: 0 - Low
- Chance of showers
Wed
5AM - 9AM
22 July 2026
- W 17 knots decreasing to 15 knots. Gusts up to 23 knots.
- 17 to 19°C
- NW 0.6m at 3s period
- UV Index: 0 - Low
- Cloudy
Wed
9AM - 1PM
22 July 2026
- W 9–16 knots.
- Increasing from 17 to 20°C
- NW 0.6m at 3s period
- UV Index: 0 - Low
- Partly cloudy
Wed
1PM - 5PM
22 July 2026
- NW 11–18 knots.
- 20 to 22°C
- NW 0.6m at 3s period
- Partly cloudy
Wed
5PM - 9PM
22 July 2026
- NW 13 knots decreasing to 7 knots. Gusts up to 17 knots.
- 18 to 21°C
- NW 0.5m at 3s period
- Partly cloudy
Wed
9PM - 5AM
22 July 2026
- NW 2–8 knots.
- 10 to 18°C
- Calm sea
- Sunny
Thu
5AM - 9AM
23 July 2026
- W 2–10 knots.
- Increasing from 12 to 18°C
- Calm sea
- Sunny
Thu
9AM - 1PM
23 July 2026
- W 3–9 knots backing SW 3-9 knots.
- Increasing from 19 to 25°C
- Calm sea
- Sunny
Thu
1PM - 5PM
23 July 2026
- SW 4 knots increasing to 10 knots.
- 23 to 28°C
- Calm sea
- Sunny
Thu
5PM - 9PM
23 July 2026
- SW 8–11 knots.
- Decreasing from 27 to 22°C
- Calm sea
- Sunny
Thu
9PM - 5AM
23 July 2026
- SW 9 knots decreasing to 4 knots.
- 15 to 22°C
- Calm sea
- Sunny
Fri
5AM - 9AM
24 July 2026
- SW 4 knots increasing to 6 knots.
- Increasing from 15 to 22°C
- Calm sea
- Sunny
Fri
9AM - 1PM
24 July 2026
- SW 6–8 knots.
- Increasing from 23 to 28°C
- Calm sea
- Sunny
Fri
1PM - 5PM
24 July 2026
- S 7–9 knots.
- 23 to 34°C
- Calm sea
- Sunny
Fri
5PM - 9PM
24 July 2026
- S 9 knots decreasing to 6 knots.
- Decreasing from 30 to 26°C
- Calm sea
- Sunny
Fri
9PM - 5AM
24 July 2026
- S 5–9 knots.
- 19 to 25°C
- Calm sea
- Sunny
Sat
5AM - 9AM
25 July 2026
- SW 6 knots.
- Increasing from 19 to 25°C
- Calm sea
- Sunny
Sat
9AM - 1PM
25 July 2026
- SW 6 knots increasing to 8 knots.
- Increasing from 26 to 34°C
- Calm sea
- Partly cloudy
Sat
1PM - 5PM
25 July 2026
- S 8 knots increasing to 12 knots. Gusts up to 17 knots.
- 24 to 38°C
- Calm sea
- Cloudy
Sat
5PM - 9PM
25 July 2026
- S 3–11 knots. Gusts up to 19 knots.
- 24 to 36°C
- Calm sea
- Cloudy
Sat
9PM - 5AM
25 July 2026
- S 3–10 knots. Gusts up to 17 knots.
- 21 to 28°C
- Calm sea
- Mostly fine
Sun
5AM - 9AM
26 July 2026
- S 6 knots increasing to 9 knots. Gusts up to 19 knots.
- Increasing from 22 to 26°C
- Calm sea
- Partly cloudy
Sun
9AM - 1PM
26 July 2026
- SW 9–14 knots. Gusts up to 19 knots.
- 25 to 35°C
- Cloudy
Sun
1PM - 5PM
26 July 2026
- SW 7–16 knots. Gusts up to 19 knots.
- 24 to 35°C
- Calm sea
- Cloudy
Sun
5PM - 9PM
26 July 2026
- S 7–15 knots. Gusts up to 26 knots.
- 24 to 29°C
- Calm sea
- Partly cloudy
Sun
9PM - 5AM
26 July 2026
- S 14 knots decreasing to 7 knots. Gusts up to 34 knots.
- 20 to 30°C
- Calm sea
- Mostly fine
Mon
5AM - 9AM
27 July 2026
- SE 1–13 knots veering NW 1-13 knots.
- Increasing from 21 to 23°C
- N 0.6m at 3s period
- Sunny
Mon
9AM - 1PM
27 July 2026
- SE 6 knots.
- 21°C
- Cloudy
Mon
1PM - 5PM
27 July 2026
- 7knots decreasing to 3 knots.
- 23°C
- N 0.4m at 3s period
- Mostly fine
Mon
5PM - 9PM
27 July 2026
- N 3 knots increasing to 13 knots. Gusts up to 18 knots.
- 23°C
- N 0.5m at 3s period
- Chance of showers
Mon
9PM - 5AM
27 July 2026
- N 12 knots increasing to 14 knots. Gusts up to 20 knots.
- 19 to 21°C
- N 0.5m at 3s period
- Chance of showers
Tue
5AM - 9AM
28 July 2026
- N 15 knots decreasing to 10 knots. Gusts up to 21 knots.
- 18°C
- N 0.4m at 3s period
- Partly cloudy
Tue
9AM - 1PM
28 July 2026
- NW 12 knots.
- 20°C
- Sunny
Tue
1PM - 5PM
28 July 2026
- N 3 knots increasing to 12 knots.
- 20 to 24°C
- Calm sea
- Cloudy
Tue
5PM - 9PM
28 July 2026
- N 4–15 knots.
- 21 to 24°C
- Calm sea
- Cloudy
Tue
9PM - 5AM
28 July 2026
- N 13 knots decreasing to 9 knots. Gusts up to 18 knots.
- 17 to 23°C
- Calm sea
- Cloudy
Wed
5AM - 9AM
29 July 2026
- N 9–12 knots.
- 16 to 22°C
- Calm sea
- Cloudy
Wed
9AM - 1PM
29 July 2026
- NW 12 knots.
- 17°C
- Cloudy
Wed
1PM - 5PM
29 July 2026
- N 9 knots increasing to 13 knots.
- 19 to 22°C
- Calm sea
- Cloudy
Wed
5PM - 9PM
29 July 2026
- N 13 knots decreasing to 8 knots.
- 21 to 24°C
- Calm sea
- Cloudy
Wed
9PM - 5AM
29 July 2026
- N 5–8 knots backing W 5-8 knots.
- 18 to 24°C
- Calm sea
- Sunny