20.12
sat
sat
Day
77°F
SW 12 mph
Precip.
0%
0%
Night
72°F
NW 4 mph
Precip.
0%
0%
21.12
sun
sun
Day
88°F
SW 9 mph
Precip.
0%
0%
Night
73°F
N 8 mph
Precip.
100%
100%
22.12
mon
mon
Day
82°F
NW 5 mph
Precip.
0%
0%
Night
68°F
N 12 mph
Precip.
70%
70%
23.12
tue
tue
Day
82°F
NW 6 mph
Precip.
0%
0%
Night
64°F
NW 7 mph
Precip.
78%
78%
24.12
wed
wed
Day
77°F
SW 16 mph
Precip.
0%
0%
Night
66°F
NE 15 mph
Precip.
41%
41%
25.12
thu
thu
Day
66°F
NW 16 mph
Precip.
100%
100%
Night
64°F
NW 9 mph
Precip.
57%
57%
26.12
fri
fri
Day
68°F
W 9 mph
Precip.
0%
0%
Night
64°F
W 6 mph
Precip.
0%
0%
27.12
sat
sat
Day
72°F
W 12 mph
Precip.
0%
0%
Night
66°F
S 11 mph
Precip.
0%
0%
28.12
sun
sun
Day
75°F
SW 16 mph
Precip.
0%
0%
Night
68°F
S 13 mph
Precip.
0%
0%
29.12
mon
mon
Day
77°F
SW 17 mph
Precip.
0%
0%
Night
70°F
SW 13 mph
Precip.
0%
0%
30.12
tue
tue
Day
77°F
SW 16 mph
Precip.
0%
0%
Night
70°F
SW 12 mph
Precip.
47%
47%
31.12
wed
wed
Day
75°F
W 12 mph
Precip.
0%
0%
Night
70°F
W 7 mph
Precip.
79%
79%
01.01
thu
thu
Day
73°F
SW 11 mph
Precip.
28%
28%
Night
68°F
SW 9 mph
Precip.
100%
100%
02.01
fri
fri
Day
75°F
N 16 mph
Precip.
0%
0%
Night
70°F
N 10 mph
Precip.
100%
100%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 71.4°F. The highest and lowest sea temperatures during the month were 73.8°F and 69.1°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 74.0°F. The highest and lowest sea temperatures during the month were 75.0°F and 71.4°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 Australia:
Name
°F
24 Hours Forecast
Sydney
Local time: 21:48
December 21, sunday
0000
72°F
NW
4 mph
4 mph
0300
70°F
NE
2 mph
2 mph
0600
73°F
SE
2 mph
2 mph
0900
84°F
S
4 mph
4 mph
1200
88°F
SW
9 mph
9 mph
1500
81°F
W
6 mph
6 mph
1800
77°F
W
6 mph
6 mph
2100
73°F
NW
7 mph
7 mph
