Current sea water temperature:
+66.2°F
| Minimum sea water temperature in July: | 77.0°F |
| Maximum sea water temperature in July: | 56.1°F |
| Average sea water temperature in July: | 67.0°F |
| more information | |
14 days
forecast
forecast
| Oshawa |
monthly
weather
weather
| Oshawa |
Sea water temperature for the last 10 days:
| July 17 | 66.2°F | July 12 | 69.4°F |
| July 16 | 72.0°F | July 11 | 69.6°F |
| July 15 | 70.0°F | July 10 | 69.6°F |
| July 14 | 70.9°F | July 9 | 68.9°F |
| July 13 | 70.0°F | July 8 | 65.1°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 66.4°F. The highest and lowest sea temperatures during the month were 72.0°F and 60.6°F.
current
weather
weather
| Oshawa |
weather in
July
July
| Oshawa |
Best time for vacation in Oshawa
Oshawa on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Oshawa
Local time: 07:28
July 17, friday
0900
70°F
W
4 mph
4 mph
1200
79°F
NW
4 mph
4 mph
1500
84°F
N
4 mph
4 mph
1800
82°F
E
2 mph
2 mph
2100
68°F
SE
1 mph
1 mph
July 18, saturday
0000
66°F
S
4 mph
4 mph
0300
68°F
NW
2 mph
2 mph
0600
66°F
N
2 mph
2 mph
