15.09
tue
tue
Day
59°F
NW 10 mph
Precip.
26%
26%
Night
68°F
NE 6 mph
Precip.
15%
15%
16.09
wed
wed
Day
72°F
SE 9 mph
Precip.
11%
11%
Night
61°F
S 8 mph
Precip.
8%
8%
17.09
thu
thu
Day
70°F
SW 2 mph
Precip.
4%
4%
Night
63°F
SE 10 mph
Precip.
14%
14%
18.09
fri
fri
Day
64°F
S 11 mph
Precip.
3%
3%
Night
52°F
SW 7 mph
Precip.
12%
12%
19.09
sat
sat
Day
55°F
W 10 mph
Precip.
19%
19%
Night
55°F
SW 6 mph
Precip.
45%
45%
20.09
sun
sun
Day
64°F
SW 10 mph
Precip.
12%
12%
Night
55°F
SW 6 mph
Precip.
16%
16%
21.09
mon
mon
Day
59°F
W 12 mph
Precip.
11%
11%
Night
54°F
W 11 mph
Precip.
13%
13%
22.09
tue
tue
Day
61°F
NW 12 mph
Precip.
45%
45%
Night
63°F
N 9 mph
Precip.
70%
70%
23.09
wed
wed
Day
68°F
NE 11 mph
Precip.
7%
7%
Night
61°F
NE 6 mph
Precip.
75%
75%
24.09
thu
thu
Day
57°F
E 14 mph
Precip.
45%
45%
Night
54°F
SE 16 mph
Precip.
31%
31%
25.09
fri
fri
Day
52°F
SE 19 mph
Precip.
19%
19%
Night
46°F
S 2 mph
Precip.
12%
12%
26.09
sat
sat
Day
59°F
NE 8 mph
Precip.
4%
4%
Night
57°F
NE 5 mph
Precip.
14%
14%
27.09
sun
sun
Day
68°F
NE 9 mph
Precip.
12%
12%
Night
61°F
N 6 mph
Precip.
26%
26%
28.09
mon
mon
Day
70°F
NE 14 mph
Precip.
16%
16%
Night
66°F
NE 7 mph
Precip.
14%
14%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 67.2°F. The highest and lowest sea temperatures during the month were 70.3°F and 60.1°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: 13:54
September 15, tuesday
1500
70°F
N
14 mph
14 mph
1800
68°F
N
7 mph
7 mph
2100
68°F
NE
8 mph
8 mph
September 16, wednesday
0000
68°F
NE
6 mph
6 mph
0300
66°F
NE
4 mph
4 mph
0600
64°F
SE
5 mph
5 mph
0900
68°F
SE
11 mph
11 mph
1200
72°F
SE
9 mph
9 mph
