Current sea water temperature:
+38.8°F
| Minimum sea water temperature in December: | 46.4°F |
| Maximum sea water temperature in December: | 35.8°F |
| Average sea water temperature in December: | 40.8°F |
| more information | |
14 days
forecast
forecast
| Toronto |
monthly
weather
weather
| Toronto |
Sea water temperature for the last 10 days:
| December 23 | 38.8°F | December 18 | 39.0°F |
| December 22 | 39.0°F | December 17 | 38.7°F |
| December 21 | 39.2°F | December 16 | 38.5°F |
| December 20 | 39.0°F | December 15 | 38.7°F |
| December 19 | 37.8°F | December 14 | 38.8°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:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.2°F. The highest and lowest sea temperatures during the month were 77.5°F and 69.4°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 68.5°F. The highest and lowest sea temperatures during the month were 75.2°F and 61.0°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
December
December
| Toronto |
Best time for vacation in Toronto
Toronto on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Toronto
Local time: 18:12
December 23, tuesday
2100
34°F
E
14 mph
14 mph
December 24, wednesday
0000
36°F
SE
19 mph
19 mph
0300
36°F
SE
18 mph
18 mph
0600
34°F
SE
17 mph
17 mph
0900
32°F
SE
12 mph
12 mph
1200
34°F
S
9 mph
9 mph
1500
34°F
SE
6 mph
6 mph
1800
32°F
S
2 mph
2 mph
