About St. Catherines
City
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COORDINATES
43.18966 N, -79.31605 E
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Weather Forecast
Sat
5AM - 9AM
13 June 2026
SW 10 knots. Gusts up to 16 knots.
16 to 20°C
Calm sea
UV Index: 0 - Low
Sunny
Sat
9AM - 1PM
13 June 2026
- W 8–10 knots.
- Increasing from 19 to 22°C
- Calm sea
- UV Index: 8 - Very High
- Sunny
Sat
1PM - 5PM
13 June 2026
- W 8 knots increasing to SW 17 knots. Gusts up to 24 knots.
- 21 to 25°C
- Calm sea
- UV Index: 8 - Very High
- Sunny
Sat
5PM - 9PM
13 June 2026
- SW 17 knots decreasing to 14 knots. Gusts up to 24 knots.
- 21 to 25°C
- Calm sea
- UV Index: 0 - Low
- Sunny
Sat
9PM - 5AM
13 June 2026
- SW 9–14 knots. Gusts up to 25 knots.
- 18 to 21°C
- Calm sea
- UV Index: 0 - Low
- Mostly fine
Sun
5AM - 9AM
14 June 2026
- SW 12 knots decreasing to 6 knots. Gusts up to 20 knots.
- 17°C
- Calm sea
- UV Index: 0 - Low
- Cloudy
Sun
9AM - 1PM
14 June 2026
- NW 5 knots increasing to 10 knots.
- 14 to 19°C
- Calm sea
- UV Index: 0 - Low
- Rain
Sun
1PM - 5PM
14 June 2026
- SW 6–19 knots veering NW 6-19 knots.
- 14 to 21°C
- Calm sea
- UV Index: 0 - Low
- Rain
Sun
5PM - 9PM
14 June 2026
- NW 4–13 knots. Gusts up to 17 knots.
- 15°C
- Calm sea
- Chance of showers
Sun
9PM - 5AM
14 June 2026
- W 5–13 knots. Gusts up to 17 knots.
- Decreasing from 16 to 10°C
- NW 0.4m at 3s period
- Mostly fine
Mon
5AM - 9AM
15 June 2026
- W 6–14 knots. Gusts up to 18 knots.
- Increasing from 9 to 15°C
- NW 0.4m at 3s period
- Sunny
Mon
9AM - 1PM
15 June 2026
- W 8–15 knots. Gusts up to 18 knots.
- Increasing from 15 to 20°C
- Calm sea
- Partly cloudy
Mon
1PM - 5PM
15 June 2026
- W 8–13 knots.
- 18 to 26°C
- Calm sea
- Mostly fine
Mon
5PM - 9PM
15 June 2026
- W 10 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.
- 13 to 17°C
- Calm sea
- Partly cloudy
Tue
5AM - 9AM
16 June 2026
- SW 7–10 knots. Gusts up to 18 knots.
- Increasing from 13 to 19°C
- Calm sea
- Partly cloudy
Tue
9AM - 1PM
16 June 2026
- SW 10 knots increasing to 12 knots. Gusts up to 18 knots.
- Increasing from 19 to 24°C
- Calm sea
- Mostly fine
Tue
1PM - 5PM
16 June 2026
- SW 11–15 knots. Gusts up to 20 knots.
- 19 to 26°C
- Calm sea
- Partly cloudy
Tue
5PM - 9PM
16 June 2026
- SW 5–13 knots. Gusts up to 19 knots.
- Decreasing from 24 to 20°C
- Calm sea
- Cloudy
Tue
9PM - 5AM
16 June 2026
- S 6–12 knots. Gusts up to 23 knots.
- 16 to 20°C
- Calm sea
- Cloudy
Wed
5AM - 9AM
17 June 2026
- S 11 knots increasing to 13 knots. Gusts up to 25 knots.
- Increasing from 16 to 20°C
- S 0.4m at 2s period
- Cloudy
Wed
9AM - 1PM
17 June 2026
- S 11–15 knots. Gusts up to 22 knots.
- 17 to 26°C
- SW 0.4m at 2s period
- Chance of showers
Wed
1PM - 5PM
17 June 2026
- SW 8–16 knots. Gusts up to 24 knots.
- 18 to 28°C
- Calm sea
- Partly cloudy
Wed
5PM - 9PM
17 June 2026
- SW 14 knots decreasing to 10 knots. Gusts up to 23 knots.
- 19 to 28°C
- Calm sea
- Partly cloudy
Wed
9PM - 5AM
17 June 2026
- SW 8 knots decreasing to 4 knots. Gusts up to 23 knots.
- 13 to 21°C
- Calm sea
- Chance of showers
Thu
5AM - 9AM
18 June 2026
- SW 4 knots increasing to 11 knots. Gusts up to 17 knots.
- Increasing from 14 to 19°C
- Calm sea
- Chance of showers
Thu
9AM - 1PM
18 June 2026
- W 6 knots increasing to SW 11 knots.
- Increasing from 20 to 26°C
- Partly cloudy
Thu
1PM - 5PM
18 June 2026
- SW 13 knots decreasing to 8 knots. Gusts up to 19 knots.
- Decreasing from 24 to 20°C
- SW 0.7m at 3s period
- Chance of showers
Thu
5PM - 9PM
18 June 2026
- W 3–10 knots backing SE 3-10 knots. Gusts up to 16 knots.
- Decreasing from 20 to 16°C
- Calm sea
- Rain
Thu
9PM - 5AM
18 June 2026
- Light and variable.
- 13 to 16°C
- NW 0.5m at 3s period
- Rain
Fri
5AM - 9AM
19 June 2026
- NW 5 knots increasing to 9 knots. Gusts up to 16 knots.
- Increasing from 13 to 17°C
- W 0.4m at 2s period
- Sunny
Fri
9AM - 1PM
19 June 2026
- NW 6–11 knots.
- Increasing from 18 to 24°C
- Sunny
Fri
1PM - 5PM
19 June 2026
- NW 8 knots increasing to 11 knots. Gusts up to 16 knots.
- 19 to 31°C
- Calm sea
- Sunny
Fri
5PM - 9PM
19 June 2026
- NW 6–14 knots. Gusts up to 17 knots.
- 17 to 29°C
- Calm sea
- Mostly fine
Fri
9PM - 5AM
19 June 2026
- W 7–9 knots.
- 13 to 16°C
- Calm sea
- Sunny
Sat
5AM - 9AM
20 June 2026
- W 8 knots.
- 13 to 16°C
- Calm sea
- Sunny
Sat
9AM - 1PM
20 June 2026
- SW 13 knots.
- 17°C
- Sunny
Sat
1PM - 5PM
20 June 2026
- SW 11 knots increasing to 15 knots. Gusts up to 24 knots.
- 20°C
- Calm sea
- Cloudy
Sat
5PM - 9PM
20 June 2026
- SW 15 knots decreasing to 13 knots. Gusts up to 24 knots.
- 16 to 21°C
- Calm sea
- Cloudy
Sat
9PM - 5AM
20 June 2026
- W 12 knots decreasing to 9 knots. Gusts up to 17 knots.
- 13 to 19°C
- Calm sea
- Chance of showers
Sun
5AM - 9AM
21 June 2026
- NW 8–12 knots. Gusts up to 16 knots.
- 13 to 16°C
- Calm sea
- Mostly fine
Sun
9AM - 1PM
21 June 2026
- SW 5 knots.
- 16°C
- Sunny
Sun
1PM - 5PM
21 June 2026
- S 10 knots decreasing to 7 knots.
- Increasing from 16 to 19°C
- NE 0.4m at 3s period
- Mostly fine
Sun
5PM - 9PM
21 June 2026
- NW 5–12 knots.
- 15 to 19°C
- NE 0.4m at 3s period
- Mostly fine
Sun
9PM - 5AM
21 June 2026
- NE 8–14 knots.
- 15°C
- NE 0.4m at 2s period
- Cloudy
Mon
5AM - 9AM
22 June 2026
- N 9 knots increasing to E 13 knots. Gusts up to 17 knots.
- 14°C
- NE 0.6m at 3s period
- Rain
Mon
9AM - 1PM
22 June 2026
- N 6 knots.
- 14°C
- Cloudy
Mon
1PM - 5PM
22 June 2026
- S 6 knots decreasing to 4 knots.
- 16°C
- Cloudy
Mon
5PM - 9PM
22 June 2026
- Light and variable.
- 17°C
- Cloudy