Oshawa Weather: August
 |
Average Day Temperature: | 78.1°F |
|
Average Night Temperature: | 66.3°F |
|
Sea Water Temperature: | 72.9°F |
|
Number of Sunny Days: | 14 days |
| Sunshine Hours: | 13.2 - 14.6 hours | |
|
Number of Rainy Days: | 1 day |
| Precipitation Totals: | 0.9 in | |
| detailed information | ||
forecast
| Oshawa |
Temperature
| Oshawa |
Air Temperature in August, °F
The highest day temperature in August 2025 was 90°F. The lowest night temperature was 47°F. The average values for day and night temperatures during August were 79.1°F и 63.0°F respectivly.
Oshawa Water Sea Temperature in August, °F
The average sea surface temperature in August 2025 for Oshawa was 75.7°F. The maximum and minimum values were 71.4°F and 80.8°F respectively.
Most of the days in August are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in August, in
Precipitation total in August for Oshawa is 0.9 in.
The average wind speed in August is 8.0 mph. It makes August one of the most windless months of the year for Oshawa.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Oshawa in August is 8.6 hours.
Oshawa on the Weather Map
| Halifax |  |
+24 |
| Kingston |  |
+4 |
| Moncton | |
+2 |
| Montreal | |
-2 |
| Niagara Falls | |
+10 |
| Ottawa | |
-4 |
| Prince Edward Island | |
+16 |
| Quebec | |
-12 |
| Rocky Harbour |  |
+28 |
| St. John's |  |
+32 |
| Sydney | |
+34 |
| Toronto | |
+10 |
| Vancouver | |
+42 |
| Victoria | |
+44 |
| Winnipeg | |
+12 |
| 0300 |  |
4°F | N 4 mph |
| 0600 |  |
8°F | N 5 mph |
| 0900 | |
18°F | N 12 mph |
| 1200 | |
24°F | NE 14 mph |
| 1500 | |
28°F | NE 13 mph |
| 1800 | |
28°F | NE 9 mph |
| 2100 | |
30°F | NE 11 mph |
| 0000 | |
30°F | NE 14 mph |