Oshawa Weather: December
 |
Average Day Temperature: | 31.8°F |
|
Average Night Temperature: | 28.1°F |
|
Sea Water Temperature: | 38.8°F |
|
Number of Sunny Days: | 5 days |
| Sunshine Hours: | 8.9 - 9.1 hours | |
|
Number of Rainy Days: | 1 day |
| Precipitation Totals: | 1.0 in | |
| detailed information | ||
forecast
| Oshawa |
Temperature
| Oshawa |
Air Temperature in December, °F
The highest day temperature in December 2025 was 44°F. The lowest night temperature was 3°F. The average values for day and night temperatures during December were 25.1°F и 19.0°F respectivly.
Oshawa Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Oshawa was 37.1°F. The maximum and minimum values were 36.0°F and 39.2°F respectively.
Most of the days in December are gloomy but you can also expect sunny days.
Precipitation Totals in December, in
Precipitation total in December for Oshawa is 1.0 in. It makes december one of the most rainy months of the year.
The average wind speed in December is 11.7 mph. It makes December the most windy month 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 December is 3.2 hours.
Oshawa on the Weather Map
| Halifax |  |
+30 |
| Kingston |  |
+30 |
| Montreal |  |
+32 |
| Niagara Falls | |
+30 |
| Ottawa |  |
+26 |
| Prince Edward Island | |
+26 |
| Quebec |  |
+20 |
| Saint John | |
+28 |
| St. John's |  |
+26 |
| Sydney | |
+26 |
| Toronto | |
+28 |
| Vancouver |  |
+44 |
| Victoria |  |
+46 |
| Winnipeg | |
+4 |
| Yellowknife |  |
-12 |
| 1200 |  |
30°F | E 22 mph |
| 1500 |  |
26°F | SE 20 mph |
| 1800 | |
24°F | SE 21 mph |
| 2100 |  |
22°F | SE 23 mph |
| 0000 | |
22°F | SE 19 mph |
| 0300 | |
22°F | SE 16 mph |
| 0600 | |
24°F | E 12 mph |
| 0900 | |
26°F | NE 13 mph |