Measurements:
°C
°F
CURRENT WEATHER
10:51
Oshawa
72°F
SE 9 mph
Feels like: 72°F
Precip: 70%
World Resorts Canada Oshawa Weather

7 Day Weather Forecast

08.19
wed
DAY
72°F
SE 9 mph
precip
70%
NIGHT
64°F
S 8 mph
precip
13%
08.20
thu
DAY
78°F
SE 15 mph
precip
5%
NIGHT
62°F
S 7 mph
precip
3%
08.21
fri
DAY
66°F
NW 9 mph
precip
20%
NIGHT
64°F
W 4 mph
precip
14%
08.22
sat
DAY
80°F
N 12 mph
precip
6%
NIGHT
64°F
NE 4 mph
precip
43%
08.23
sun
DAY
74°F
E 14 mph
precip
11%
NIGHT
58°F
SE 13 mph
precip
29%
08.24
mon
DAY
68°F
SE 15 mph
precip
2%
NIGHT
62°F
SE 5 mph
precip
18%
08.25
tue
DAY
70°F
N 6 mph
precip
13%
NIGHT
64°F
W 6 mph
precip
19%

Oshawa Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Oshawa was 20.7°F. The maximum and minimum values were 17.1°F and 22.9°F respectively.

Oshawa on the Weather Map

Best Time to Visit Oshawa
The most sunny months:
September 15 days
August 14 days
July 14 days
The most warm months:
July 79.8 °F
August 78.1 °F
June 72.8 °F
Warmest sea temperature:
August 72.9 °F
September 69.3 °F
July 68.3 °F
The most cold months:
January 24.0 °F
February 25.1 °F
December 31.8 °F
The most rainy months:
July 3 days
April 2 days
March 2 days
The most windy months:
December 11 mph
November 11 mph
January 11 mph
more details