World Resorts Canada Oshawa Weather

Oshawa 7 Days Forecast

15.09
tue
Day
59°F
NW 10 mph
Precip.
26%
Night
68°F
NE 6 mph
Precip.
15%
16.09
wed
Day
72°F
SE 9 mph
Precip.
11%
Night
61°F
S 8 mph
Precip.
8%
17.09
thu
Day
70°F
SW 2 mph
Precip.
4%
Night
63°F
SE 10 mph
Precip.
14%
18.09
fri
Day
64°F
S 11 mph
Precip.
3%
Night
52°F
SW 7 mph
Precip.
12%
19.09
sat
Day
55°F
W 10 mph
Precip.
19%
Night
55°F
SW 6 mph
Precip.
45%
20.09
sun
Day
64°F
SW 10 mph
Precip.
12%
Night
55°F
SW 6 mph
Precip.
16%
21.09
mon
Day
59°F
W 12 mph
Precip.
11%
Night
54°F
W 11 mph
Precip.
13%

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

Sunniest months:
September 15 days
August 14 days
July 14 days
Warmest months:
July 76.8 °F
August 75.3 °F
June 70.5 °F
Warmest sea temp:
August 70.3 °F
September 67.3 °F
July 66.5 °F
Coldest months:
January 26.6 °F
February 27.6 °F
December 33.6 °F
Rainiest months:
July 3 days
April 2 days
August 2 days
Windiest months:
December 11.7 mph
November 11.7 mph
January 11.7 mph

Oshawa on a weather map

Current weather
13:54
Oshawa
+70°F
N 14 mph
Feels like: +70°F
Precip.: 6%
Places in Canada:
Name
°F
Vancouver
+59°F
Victoria
+55°F
Winnipeg
+54°F
Halifax
+70°F
Quebec
+63°F
Moncton
+64°F
Montreal
+61°F
Niagara Falls
+75°F
Prince Edward Island
+61°F
Ottawa
+57°F
Saint John
+66°F
St. John's
+59°F
Saint Andrews
+61°F
Sydney
+61°F
Toronto
+75°F
all places
24 Hours Forecast
Oshawa
Local time: 13:54
September 15, tuesday
1500
70°F
N
14 mph
1800
68°F
N
7 mph
2100
68°F
NE
8 mph
September 16, wednesday
0000
68°F
NE
6 mph
0300
66°F
NE
4 mph
0600
64°F
SE
5 mph
0900
68°F
SE
11 mph
1200
72°F
SE
9 mph
Units of measurement: °C / °F