Current sea water temperature:
+68.4°F
| Minimum sea water temperature in August: | 77.7°F |
| Maximum sea water temperature in August: | 59.5°F |
| Average sea water temperature in August: | 70.5°F |
| more information | |
14 days
forecast
forecast
| Oshawa |
monthly
weather
weather
| Oshawa |
Sea water temperature for the last 10 days:
| August 6 | 68.4°F | August 1 | 62.8°F |
| August 5 | 68.7°F | July 31 | 63.0°F |
| August 4 | 68.7°F | July 30 | 61.0°F |
| August 3 | 66.4°F | July 29 | 60.8°F |
| August 2 | 66.2°F | July 28 | 57.6°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:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.1°F. The highest and lowest sea temperatures during the month were 77.7°F and 69.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 65.2°F. The highest and lowest sea temperatures during the month were 68.0°F and 57.6°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
August
August
| Oshawa |
Best time for vacation in Oshawa
Oshawa on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Oshawa
Local time: 10:34
August 06, thursday
1200
86°F
NE
8 mph
8 mph
1500
82°F
NE
6 mph
6 mph
1800
77°F
E
7 mph
7 mph
2100
72°F
SE
5 mph
5 mph
August 07, friday
0000
68°F
S
4 mph
4 mph
0300
66°F
S
4 mph
4 mph
0600
66°F
S
4 mph
4 mph
0900
73°F
NE
1 mph
1 mph
