About St. Catherines
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COORDINATES
43.18966 N, -79.31605 E
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Weather Forecast
Sun
5AM - 9AM
14 June 2026
SW 10–14 knots. Gusts up to 23 knots.
17°C
Calm sea
UV Index: 0 - Low
Chance of showers
Sun
9AM - 1PM
14 June 2026
- SW 6–12 knots veering NW 6-12 knots.
- 15 to 19°C
- Calm sea
- UV Index: 0 - Low
- Rain
Sun
1PM - 5PM
14 June 2026
- N 11 knots decreasing to 7 knots. Gusts up to 16 knots.
- 15 to 18°C
- Calm sea
- UV Index: 0 - Low
- Rain
Sun
5PM - 9PM
14 June 2026
- N 6–12 knots.
- 16°C
- Calm sea
- UV Index: 0 - Low
- Rain
Sun
9PM - 5AM
14 June 2026
- NW 8 knots increasing to 17 knots. Gusts up to 23 knots.
- 12 to 16°C
- NW 0.5m at 3s period
- UV Index: 0 - Low
- Mostly fine
Mon
5AM - 9AM
15 June 2026
- NW 16 knots decreasing to 12 knots. Gusts up to 22 knots.
- 12°C
- NW 0.6m at 3s period
- UV Index: 0 - Low
- Sunny
Mon
9AM - 1PM
15 June 2026
- NW 11 knots decreasing to SW 4 knots.
- Increasing from 12 to 16°C
- Calm sea
- UV Index: 6 - High
- Mostly fine
Mon
1PM - 5PM
15 June 2026
- SW 6 knots increasing to W 8 knots.
- Increasing from 16 to 21°C
- Calm sea
- UV Index: 6 - High
- Mostly fine
Mon
5PM - 9PM
15 June 2026
- W 9 knots decreasing to 7 knots.
- Decreasing from 21 to 17°C
- Calm sea
- Mostly fine
Mon
9PM - 5AM
15 June 2026
- SW 6–9 knots. Gusts up to 19 knots.
- 12 to 17°C
- Calm sea
- Partly cloudy
Tue
5AM - 9AM
16 June 2026
- SW 9 knots increasing to 11 knots. Gusts up to 19 knots.
- Increasing from 13 to 18°C
- Calm sea
- Partly cloudy
Tue
9AM - 1PM
16 June 2026
- SW 9–12 knots. Gusts up to 18 knots.
- Increasing from 18 to 22°C
- Calm sea
- Mostly fine
Tue
1PM - 5PM
16 June 2026
- SW 10–17 knots. Gusts up to 19 knots.
- 18 to 27°C
- Calm sea
- Mostly fine
Tue
5PM - 9PM
16 June 2026
- SW 13 knots decreasing to 9 knots. Gusts up to 19 knots.
- Decreasing from 24 to 20°C
- Calm sea
- Partly cloudy
Tue
9PM - 5AM
16 June 2026
- S 7–12 knots. Gusts up to 20 knots.
- 16 to 20°C
- Calm sea
- Cloudy
Wed
5AM - 9AM
17 June 2026
- S 10 knots increasing to 13 knots. Gusts up to 23 knots.
- Increasing from 16 to 19°C
- Calm sea
- Cloudy
Wed
9AM - 1PM
17 June 2026
- SW 12–16 knots. Gusts up to 23 knots.
- 17 to 20°C
- Calm sea
- Cloudy
Wed
1PM - 5PM
17 June 2026
- SW 11–17 knots. Gusts up to 23 knots.
- 18 to 20°C
- Calm sea
- Partly cloudy
Wed
5PM - 9PM
17 June 2026
- SW 13 knots decreasing to 6 knots. Gusts up to 19 knots.
- 17 to 20°C
- Calm sea
- Mostly fine
Wed
9PM - 5AM
17 June 2026
- W 5 knots increasing to SE 8 knots.
- 13 to 17°C
- Calm sea
- Partly cloudy
Thu
5AM - 9AM
18 June 2026
- S 9 knots increasing to 17 knots. Gusts up to 27 knots.
- Increasing from 13 to 18°C
- S 0.5m at 2s period
- Chance of showers
Thu
9AM - 1PM
18 June 2026
- S 9–18 knots. Gusts up to 22 knots.
- 18 to 22°C
- SW 0.7m at 3s period
- Chance of showers
Thu
1PM - 5PM
18 June 2026
- SW 8–21 knots veering W 8-21 knots.
- 16 to 20°C
- W 0.7-1.0m at 3s period
- Cloudy
Thu
5PM - 9PM
18 June 2026
- W 4–19 knots. Gusts up to 23 knots.
- 14 to 30°C
- W 0.6m at 3s period
- Partly cloudy
Thu
9PM - 5AM
18 June 2026
- W 0–12 knots. Gusts up to 19 knots.
- Decreasing from 18 to 11°C
- W 0.4m at 2s period
- Sunny
Fri
5AM - 9AM
19 June 2026
- W 5–7 knots.
- Increasing from 11 to 17°C
- Calm sea
- Sunny
Fri
9AM - 1PM
19 June 2026
- SW 6 knots increasing to 13 knots. Gusts up to 20 knots.
- Increasing from 18 to 24°C
- Calm sea
- Sunny
Fri
1PM - 5PM
19 June 2026
- SW 12–18 knots. Gusts up to 22 knots.
- 18 to 32°C
- Calm sea
- Sunny
Fri
5PM - 9PM
19 June 2026
- W 14 knots decreasing to 10 knots. Gusts up to 22 knots.
- Decreasing from 26 to 21°C
- Calm sea
- Sunny
Fri
9PM - 5AM
19 June 2026
- W 2–11 knots.
- Decreasing from 19 to 11°C
- W 0.4m at 2s period
- Sunny
Sat
5AM - 9AM
20 June 2026
- W 5 knots increasing to 9 knots. Gusts up to 17 knots.
- Increasing from 11 to 17°C
- W 0.5m at 3s period
- Sunny
Sat
9AM - 1PM
20 June 2026
- W 7–10 knots.
- Increasing from 18 to 25°C
- Mostly fine
Sat
1PM - 5PM
20 June 2026
- W 10 knots increasing to 14 knots. Gusts up to 20 knots.
- 18 to 28°C
- Calm sea
- Sunny
Sat
5PM - 9PM
20 June 2026
- NW 14 knots decreasing to 10 knots. Gusts up to 20 knots.
- Decreasing from 24 to 20°C
- Calm sea
- Sunny
Sat
9PM - 5AM
20 June 2026
- W 7–14 knots. Gusts up to 19 knots.
- 12 to 16°C
- Calm sea
- Cloudy
Sun
5AM - 9AM
21 June 2026
- W 14 knots decreasing to 9 knots. Gusts up to 20 knots.
- 12 to 15°C
- Calm sea
- Cloudy
Sun
9AM - 1PM
21 June 2026
- NW 12 knots.
- 13°C
- Cloudy
Sun
1PM - 5PM
21 June 2026
- W 8 knots increasing to 10 knots.
- 17°C
- Calm sea
- Cloudy
Sun
5PM - 9PM
21 June 2026
- NW 10 knots.
- 17 to 19°C
- Calm sea
- Cloudy
Sun
9PM - 5AM
21 June 2026
- NW 8 knots decreasing to 5 knots.
- 13 to 18°C
- Calm sea
- Mostly fine
Mon
5AM - 9AM
22 June 2026
- N 6 knots.
- Increasing from 13 to 16°C
- Calm sea
- Mostly fine
Mon
9AM - 1PM
22 June 2026
- Light and variable.
- 16°C
- Sunny
Mon
1PM - 5PM
22 June 2026
- SE 9 knots decreasing to 6 knots.
- 17°C
- Calm sea
- Mostly fine
Mon
5PM - 9PM
22 June 2026
- S 6 knots increasing to 8 knots.
- 17°C
- Calm sea
- Chance of showers
Mon
9PM - 5AM
22 June 2026
- N 3–8 knots.
- 16°C
- Calm sea
- Mostly fine
Tue
5AM - 9AM
23 June 2026
- NE 3 knots increasing to 6 knots.
- 16°C
- Calm sea
- Mostly fine
Tue
9AM - 1PM
23 June 2026
- E 6 knots.
- 16°C
- Cloudy
Tue
1PM - 5PM
23 June 2026
- E 5 knots increasing to 9 knots.
- 17°C
- Calm sea
- Cloudy
Tue
5PM - 9PM
23 June 2026
- NE 8–10 knots.
- 17 to 20°C
- Calm sea
- Cloudy