18.12
thu
thu
Day
43°F
NW 11 mph
Precip.
0%
0%
Night
45°F
NW 16 mph
Precip.
69%
69%
19.12
fri
fri
Day
34°F
E 25 mph
Precip.
0%
0%
Night
23°F
E 23 mph
Precip.
0%
0%
20.12
sat
sat
Day
27°F
N 14 mph
Precip.
0%
0%
Night
32°F
NE 22 mph
Precip.
0%
0%
21.12
sun
sun
Day
30°F
E 23 mph
Precip.
0%
0%
Night
19°F
SE 16 mph
Precip.
0%
0%
22.12
mon
mon
Day
19°F
E 1 mph
Precip.
0%
0%
Night
27°F
N 10 mph
Precip.
77%
77%
23.12
tue
tue
Day
34°F
E 18 mph
Precip.
21%
21%
Night
28°F
SE 17 mph
Precip.
59%
59%
24.12
wed
wed
Day
16°F
NE 7 mph
Precip.
0%
0%
Night
21°F
NW 7 mph
Precip.
0%
0%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 38.4°F. The highest and lowest sea temperatures during the month were 40.3°F and 37.4°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 37.2°F. The highest and lowest sea temperatures during the month were 37.8°F and 36.5°F.
Air temperature in Oshawa, °F
Precipitation total in Oshawa, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Oshawa
Oshawa on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Oshawa
Local time: 20:51
December 18, thursday
2100
41°F
NW
11 mph
11 mph
December 19, friday
0000
45°F
NW
16 mph
16 mph
0300
46°F
N
17 mph
17 mph
0600
48°F
N
21 mph
21 mph
0900
37°F
E
19 mph
19 mph
1200
34°F
E
25 mph
25 mph
1500
30°F
NE
24 mph
24 mph
1800
28°F
E
27 mph
27 mph
