About St. Catherines
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COORDINATES
43.18966 N, -79.31605 E
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Weather Forecast
Thu
5AM - 9AM
09 April 2026
S 14 knots increasing to 17 knots. Gusts up to 31 knots.
5 to 7°C
S 0.7m at 3s period
UV Index: 0 - Low
Cloudy
Thu
9AM - 1PM
09 April 2026
- S 15–21 knots. Gusts up to 31 knots.
- Increasing from 7 to 10°C
- S 0.7m at 3s period
- UV Index: 4 - Moderate
- Cloudy
Thu
1PM - 5PM
09 April 2026
- SW 12–20 knots. Gusts up to 27 knots.
- 10°C
- SW 0.4m at 2s period
- UV Index: 4 - Moderate
- Cloudy
Thu
5PM - 9PM
09 April 2026
- SW 8–14 knots. Gusts up to 20 knots.
- 7 to 10°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy
Thu
9PM - 5AM
09 April 2026
- SW 6–10 knots veering NE 6-10 knots.
- 3 to 9°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Fri
5AM - 9AM
10 April 2026
- N 2–7 knots.
- 3°C
- Calm sea
- UV Index: 0 - Low
- Chance of showers
Fri
9AM - 1PM
10 April 2026
- NE 4–10 knots.
- 3°C
- Calm sea
- UV Index: 0 - Low
- Rain
Fri
1PM - 5PM
10 April 2026
- E 4–8 knots backing N 4-8 knots.
- 2 to 5°C
- Calm sea
- UV Index: 0 - Low
- Chance of showers
Fri
5PM - 9PM
10 April 2026
- N 2–7 knots backing SW 2-7 knots.
- 2 to 10°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Fri
9PM - 5AM
10 April 2026
- NW 4–7 knots.
- −1 to 5°C
- Calm sea
- Mostly fine
Sat
5AM - 9AM
11 April 2026
- NW 4–8 knots.
- Increasing from 0 to 3°C
- Calm sea
- Sunny
Sat
9AM - 1PM
11 April 2026
- NW 5 knots decreasing to N 3 knots.
- Increasing from 4 to 8°C
- Calm sea
- Sunny
Sat
1PM - 5PM
11 April 2026
- S 4 knots increasing to 7 knots.
- 5 to 11°C
- Calm sea
- Sunny
Sat
5PM - 9PM
11 April 2026
- S 5–8 knots.
- Decreasing from 10 to 5°C
- Calm sea
- Sunny
Sat
9PM - 5AM
11 April 2026
- S 4–6 knots.
- 2 to 6°C
- Calm sea
- Partly cloudy
Sun
5AM - 9AM
12 April 2026
- SE 5–7 knots.
- Increasing from 2 to 5°C
- Calm sea
- Cloudy
Sun
9AM - 1PM
12 April 2026
- SE 6 knots veering S 6 knots.
- Increasing from 6 to 12°C
- Calm sea
- Cloudy
Sun
1PM - 5PM
12 April 2026
- S 7–9 knots veering SW 7-9 knots.
- 4 to 16°C
- Calm sea
- Cloudy
Sun
5PM - 9PM
12 April 2026
- S 8 knots decreasing to 4 knots.
- 5 to 15°C
- Calm sea
- Cloudy
Sun
9PM - 5AM
12 April 2026
- SW 6 knots increasing to 16 knots. Gusts up to 36 knots.
- 11°C
- Calm sea
- Cloudy
Mon
5AM - 9AM
13 April 2026
- SW 11–19 knots. Gusts up to 33 knots.
- 12 to 16°C
- SW 0.5m at 2s period
- Cloudy
Mon
9AM - 1PM
13 April 2026
- SW 15–19 knots. Gusts up to 33 knots.
- Increasing from 14 to 18°C
- SW 0.6m at 3s period
- Cloudy
Mon
1PM - 5PM
13 April 2026
- SW 13–20 knots. Gusts up to 29 knots.
- 14 to 20°C
- SW 0.6m at 3s period
- Cloudy
Mon
5PM - 9PM
13 April 2026
- SW 9–20 knots. Gusts up to 25 knots.
- 12 to 18°C
- SW 0.4m at 2s period
- Cloudy
Mon
9PM - 5AM
13 April 2026
- SW 12 knots decreasing to 8 knots. Gusts up to 25 knots.
- 10 to 18°C
- Calm sea
- Chance of showers
Tue
5AM - 9AM
14 April 2026
- SW 6–10 knots. Gusts up to 19 knots.
- 10 to 16°C
- Calm sea
- Cloudy
Tue
9AM - 1PM
14 April 2026
- SW 7 knots increasing to 12 knots. Gusts up to 20 knots.
- Increasing from 14 to 21°C
- Calm sea
- Cloudy
Tue
1PM - 5PM
14 April 2026
- SW 9–15 knots. Gusts up to 22 knots.
- 13 to 21°C
- Calm sea
- Cloudy
Tue
5PM - 9PM
14 April 2026
- SW 4–16 knots. Gusts up to 21 knots.
- Decreasing from 18 to 15°C
- Calm sea
- Cloudy
Tue
9PM - 5AM
14 April 2026
- SW 4–16 knots. Gusts up to 24 knots.
- 9 to 16°C
- Calm sea
- Cloudy
Wed
5AM - 9AM
15 April 2026
- SW 9 knots increasing to 12 knots. Gusts up to 27 knots.
- 10 to 19°C
- Calm sea
- Chance of showers
Wed
9AM - 1PM
15 April 2026
- SW 11–15 knots. Gusts up to 30 knots.
- Increasing from 17 to 20°C
- Cloudy
Wed
1PM - 5PM
15 April 2026
- W 11 knots increasing to 15 knots. Gusts up to 27 knots.
- 4 to 22°C
- Calm sea
- Cloudy
Wed
5PM - 9PM
15 April 2026
- SW 12–15 knots veering NE 12-15 knots. Gusts up to 29 knots.
- 1 to 21°C
- Calm sea
- Cloudy
Wed
9PM - 5AM
15 April 2026
- W 17 knots decreasing to 11 knots. Gusts up to 26 knots.
- 10 to 14°C
- Calm sea
- Mostly fine
Thu
5AM - 9AM
16 April 2026
- W 13 knots increasing to 15 knots. Gusts up to 19 knots.
- 10°C
- Calm sea
- Mostly fine
Thu
9AM - 1PM
16 April 2026
- W 12 knots.
- 10°C
- Partly cloudy
Thu
1PM - 5PM
16 April 2026
- SW 15 knots decreasing to 10 knots. Gusts up to 18 knots.
- 12 to 14°C
- SW 0.4m at 2s period
- Mostly fine
Thu
5PM - 9PM
16 April 2026
- W 6–21 knots backing SW 6-21 knots.
- 12°C
- Calm sea
- Partly cloudy
Thu
9PM - 5AM
16 April 2026
- S 8–15 knots.
- 8°C
- Calm sea
- Mostly fine
Fri
5AM - 9AM
17 April 2026
- SW 8 knots.
- 7 to 9°C
- Calm sea
- Cloudy
Fri
9AM - 1PM
17 April 2026
- NW 10 knots.
- 8°C
- Chance of showers
Fri
1PM - 5PM
17 April 2026
- SW 8–19 knots veering NW 8-19 knots.
- 9 to 13°C
- Calm sea
- Cloudy
Fri
5PM - 9PM
17 April 2026
- NW 10–26 knots.
- 8 to 10°C
- Calm sea
- Cloudy
Fri
9PM - 5AM
17 April 2026
- NW 9–22 knots.
- 4 to 6°C
- Calm sea
- Cloudy
Sat
5AM - 9AM
18 April 2026
- NW 10 knots increasing to 14 knots. Gusts up to 19 knots.
- 0 to 4°C
- Calm sea
- Cloudy
Sat
9AM - 1PM
18 April 2026
- NE 4 knots.
- 4°C
- Cloudy
Sat
1PM - 5PM
18 April 2026
- S 6 knots.
- 4°C
- Calm sea
- Cloudy
Sat
5PM - 9PM
18 April 2026
- S 5 knots veering NW 5 knots.
- 5°C
- NW 0.4m at 2s period
- Cloudy