About St. Catherines
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COORDINATES
43.18966 N, -79.31605 E
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Weather Forecast
Sat
9AM - 1PM
25 April 2026
NE 20 knots increasing to 22 knots. Gusts up to 31 knots.
3°C
NE 1.0m at 4s period
Rain
Sat
1PM - 5PM
25 April 2026
- NE 22 knots decreasing to 17 knots. Gusts up to 31 knots.
- 4°C
- NE 1.1m at 4s period
UV Index: 0 - Low- Chance of showers
Sat
5PM - 9PM
25 April 2026
- NE 16–19 knots. Gusts up to 25 knots.
- 5°C
- NE 1.0m at 4s period
- UV Index: 0 - Low
- Cloudy
Sat
9PM - 5AM
25 April 2026
- NE 14 knots decreasing to 9 knots. Gusts up to 21 knots.
- 4°C
- NE 0.4-0.9m at 4s period
- UV Index: 0 - Low
- Cloudy
Sun
5AM - 9AM
26 April 2026
- NE 7–10 knots.
- 5°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy
Sun
9AM - 1PM
26 April 2026
- NE 7–10 knots.
- 5°C
- Calm sea
- UV Index: 6 - High
- Cloudy
Sun
1PM - 5PM
26 April 2026
- NE 6–11 knots.
- 4 to 7°C
- Calm sea
- UV Index: 6 - High
- Cloudy
Sun
5PM - 9PM
26 April 2026
- NE 4–8 knots.
- 5 to 7°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Sun
9PM - 5AM
26 April 2026
- E 3–9 knots.
- 5 to 7°C
- Calm sea
- UV Index: 0 - Low
- Sunny
Mon
5AM - 9AM
27 April 2026
- E 3–6 knots.
- Increasing from 4 to 7°C
- Calm sea
- UV Index: 0 - Low
- Mostly fine
Mon
9AM - 1PM
27 April 2026
- NE 4 knots increasing to 8 knots.
- 6 to 13°C
- Calm sea
- Partly cloudy
Mon
1PM - 5PM
27 April 2026
- NE 7–11 knots.
- 7 to 15°C
- Calm sea
- Cloudy
Mon
5PM - 9PM
27 April 2026
- E 4–14 knots. Gusts up to 17 knots.
- 8 to 13°C
- Calm sea
- Partly cloudy
Mon
9PM - 5AM
27 April 2026
- SE 5–14 knots. Gusts up to 17 knots.
- 8 to 10°C
- Calm sea
- Cloudy
Tue
5AM - 9AM
28 April 2026
- SE 6–15 knots veering S 6-15 knots. Gusts up to 19 knots.
- 8 to 12°C
- S 0.5m at 2s period
- Cloudy
Tue
9AM - 1PM
28 April 2026
- S 7–16 knots. Gusts up to 22 knots.
- 9 to 12°C
- S 0.6m at 3s period
- Rain
Tue
1PM - 5PM
28 April 2026
- S 12–15 knots. Gusts up to 21 knots.
- 10 to 13°C
- S 0.5m at 2s period
- Chance of showers
Tue
5PM - 9PM
28 April 2026
- S 13 knots decreasing to SW 10 knots. Gusts up to 21 knots.
- 10 to 13°C
- Calm sea
- Cloudy
Tue
9PM - 5AM
28 April 2026
- N 10 knots decreasing to 4 knots. Gusts up to 19 knots.
- 7 to 11°C
- Calm sea
- Cloudy
Wed
5AM - 9AM
29 April 2026
- NW 5 knots increasing to 7 knots.
- 6 to 10°C
- Calm sea
- Cloudy
Wed
9AM - 1PM
29 April 2026
- NW 6 knots decreasing to 4 knots.
- 7 to 10°C
- Calm sea
- Cloudy
Wed
1PM - 5PM
29 April 2026
- Light and variable.
- 8 to 11°C
- Calm sea
- Cloudy
Wed
5PM - 9PM
29 April 2026
- NW 1–13 knots.
- 7 to 12°C
- N 0.4m at 2s period
- Cloudy
Wed
9PM - 5AM
29 April 2026
- NW 5–15 knots. Gusts up to 23 knots.
- 6 to 10°C
- NW 0.6m at 3s period
- Partly cloudy
Thu
5AM - 9AM
30 April 2026
- W 7–12 knots. Gusts up to 21 knots.
- 5 to 7°C
- NW 0.5m at 3s period
- Partly cloudy
Thu
9AM - 1PM
30 April 2026
- NW 6–13 knots. Gusts up to 17 knots.
- 6 to 10°C
- Calm sea
- Cloudy
Thu
1PM - 5PM
30 April 2026
- NW 6–13 knots.
- 8 to 10°C
- Calm sea
- Cloudy
Thu
5PM - 9PM
30 April 2026
- NW 4–14 knots. Gusts up to 20 knots.
- Decreasing from 9 to 6°C
- Calm sea
- Partly cloudy
Thu
9PM - 5AM
30 April 2026
- NW 4–14 knots. Gusts up to 21 knots.
- −1 to 6°C
- NW 0.4m at 2s period
- Mostly fine
Fri
5AM - 9AM
01 May 2026
- NW 4–12 knots. Gusts up to 18 knots.
- −1 to 5°C
- NW 0.4m at 2s period
- Partly cloudy
Fri
9AM - 1PM
01 May 2026
- NW 4–9 knots.
- Increasing from 4 to 8°C
- Cloudy
Fri
1PM - 5PM
01 May 2026
- NW 4–9 knots.
- 6 to 9°C
- Calm sea
- Cloudy
Fri
5PM - 9PM
01 May 2026
- W 4–11 knots.
- 4 to 8°C
- NW 0.4m at 2s period
- Cloudy
Fri
9PM - 5AM
01 May 2026
- W 1–10 knots.
- −1 to 5°C
- NW 0.5m at 3s period
- Partly cloudy
Sat
5AM - 9AM
02 May 2026
- W 3–13 knots. Gusts up to 16 knots.
- −1 to 4°C
- NW 0.5m at 3s period
- Mostly fine
Sat
9AM - 1PM
02 May 2026
- NW 11 knots.
- 6°C
- Sunny
Sat
1PM - 5PM
02 May 2026
- NW 11 knots increasing to 15 knots. Gusts up to 19 knots.
- 6 to 8°C
- NW 0.6m at 3s period
- Cloudy
Sat
5PM - 9PM
02 May 2026
- NW 15 knots decreasing to 12 knots. Gusts up to 19 knots.
- 6°C
- NW 0.5m at 3s period
- Cloudy
Sat
9PM - 5AM
02 May 2026
- W 10–12 knots. Gusts up to 16 knots.
- 3°C
- W 0.4m at 2s period
- Cloudy
Sun
5AM - 9AM
03 May 2026
- W 10 knots. Gusts up to 16 knots.
- 3°C
- Calm sea
- Chance of showers
Sun
9AM - 1PM
03 May 2026
- W 9 knots.
- 3°C
- Chance of showers
Sun
1PM - 5PM
03 May 2026
- N 6 knots.
- 3 to 6°C
- Calm sea
- Chance of showers
Sun
5PM - 9PM
03 May 2026
- N 6 knots increasing to NE 9 knots.
- 4 to 7°C
- Calm sea
- Chance of showers
Sun
9PM - 5AM
03 May 2026
- N 8 knots.
- 4°C
- Calm sea
- Chance of showers
Mon
5AM - 9AM
04 May 2026
- N 6–8 knots.
- 4°C
- Calm sea
- Cloudy
Mon
9AM - 1PM
04 May 2026
- Light and variable.
- 5°C
- Cloudy
Mon
1PM - 5PM
04 May 2026
- Light and variable.
- 5°C
- Calm sea
- Cloudy
Mon
5PM - 9PM
04 May 2026
- Light and variable.
- 6 to 8°C
- Calm sea
- Cloudy
Mon
9PM - 5AM
04 May 2026
- NW 4 knots.
- 6°C
- Calm sea
- Cloudy