Current sea water temperature:
+69.6°F
| Minimum sea water temperature in August: | 77.5°F |
| Maximum sea water temperature in August: | 32.0°F |
| Average sea water temperature in August: | 67.4°F |
| more information | |
14 days
forecast
forecast
| Toronto |
monthly
weather
weather
| Toronto |
Sea water temperature for the last 10 days:
| August 26 | 69.6°F | August 21 | 70.5°F |
| August 25 | 70.2°F | August 20 | 70.9°F |
| August 24 | 71.1°F | August 19 | 70.9°F |
| August 23 | 71.2°F | August 18 | 71.1°F |
| August 22 | 70.5°F | August 17 | 70.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Toronto?
Based on the data about daily sea water temperature for the last three years the warmest sea in Toronto was noticed in August, July and September.
Monthly Sea Temperatures in Toronto, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 69.1°F. The highest and lowest sea temperatures during the month were 72.3°F and 61.3°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 65.0°F. The highest and lowest sea temperatures during the month were 73.2°F and 57.0°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 65.1°F. The highest and lowest sea temperatures during the month were 69.3°F and 58.5°F.
current
weather
weather
| Toronto |
weather in
August
August
| Toronto |
Best time for vacation in Toronto
Toronto on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Toronto
Local time: 12:21
August 26, wednesday
1500

77°F
NW
11 mph
11 mph
1800

77°F
N
11 mph
11 mph
2100

70°F
NW
6 mph
6 mph
August 27, thursday
0000

68°F
N
6 mph
6 mph
0300

66°F
N
6 mph
6 mph
0600

64°F
NE
5 mph
5 mph
0900

66°F
NE
8 mph
8 mph
1200

77°F
E
11 mph
11 mph




























