18.08
tue
tue
Day
66°F
N 11 mph
Precip.
27%
27%
Night
64°F
N 12 mph
Precip.
69%
69%
19.08
wed
wed
Day
66°F
NW 15 mph
Precip.
76%
76%
Night
68°F
N 9 mph
Precip.
45%
45%
20.08
thu
thu
Day
77°F
NE 6 mph
Precip.
16%
16%
Night
64°F
SW 4 mph
Precip.
52%
52%
21.08
fri
fri
Day
61°F
SW 6 mph
Precip.
48%
48%
Night
59°F
SW 3 mph
Precip.
18%
18%
22.08
sat
sat
Day
72°F
W 10 mph
Precip.
1%
1%
Night
64°F
NE 1 mph
Precip.
45%
45%
23.08
sun
sun
Day
70°F
N 1 mph
Precip.
17%
17%
Night
66°F
N 4 mph
Precip.
45%
45%
24.08
mon
mon
Day
68°F
N 12 mph
Precip.
89%
89%
Night
64°F
NE 14 mph
Precip.
18%
18%
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 66.2°F. The highest and lowest sea temperatures during the month were 67.8°F and 63.7°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 64.8°F. The highest and lowest sea temperatures during the month were 68.2°F and 60.6°F.
Air temperature in Sydney, °F
Precipitation total in Sydney, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Sydney
Sydney on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Sydney
Local time: 12:11
August 18, tuesday
1500
72°F
N
14 mph
14 mph
1800
63°F
N
11 mph
11 mph
2100
61°F
N
11 mph
11 mph
August 19, wednesday
0000
64°F
N
12 mph
12 mph
0300
64°F
N
13 mph
13 mph
0600
64°F
N
11 mph
11 mph
0900
66°F
NW
12 mph
12 mph
1200
66°F
NW
15 mph
15 mph
