Current sea water temperature:
+66.9°F
| Minimum sea water temperature in September: | 74.3°F |
| Maximum sea water temperature in September: | 57.6°F |
| Average sea water temperature in September: | 67.3°F |
| more information | |
14 days
forecast
forecast
| Oshawa |
monthly
weather
weather
| Oshawa |
Sea water temperature for the last 10 days:
| September 15 | 66.9°F | September 10 | 70.3°F |
| September 14 | 68.5°F | September 9 | 69.3°F |
| September 13 | 67.5°F | September 8 | 69.4°F |
| September 12 | 68.7°F | September 7 | 68.9°F |
| September 11 | 69.4°F | September 6 | 68.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Oshawa?
Based on the data about daily sea water temperature for the last three years the warmest sea in Oshawa was noticed in August, September and July.
Monthly Sea Temperatures in Oshawa, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 68.2°F. The highest and lowest sea temperatures during the month were 73.2°F and 57.9°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 67.2°F. The highest and lowest sea temperatures during the month were 70.3°F and 60.1°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 62.9°F. The highest and lowest sea temperatures during the month were 72.0°F and 53.8°F.
current
weather
weather
| Oshawa |
weather in
September
September
| Oshawa |
Best time for vacation in Oshawa
Oshawa on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Oshawa
Local time: 13:51
September 15, tuesday
1500
70°F
N
14 mph
14 mph
1800
68°F
N
7 mph
7 mph
2100
68°F
NE
8 mph
8 mph
September 16, wednesday
0000
68°F
NE
6 mph
6 mph
0300
66°F
NE
4 mph
4 mph
0600
64°F
SE
5 mph
5 mph
0900
68°F
SE
11 mph
11 mph
1200
72°F
SE
9 mph
9 mph
