World Resorts Australia Sydney Weather

Sydney Sea Temperature in December

Average sea water temperature in December:
+70.5°F
Minimum sea water temperature in December: 75.4°F
Maximum sea water temperature in December: 66.6°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 72.1°F. The highest and lowest sea temperatures during the month were 74.7°F and 69.1°F.

Monthly sea water temperature in Sydney, °F

Which Australia resorts have warmest sea in December?

Place name December 2025 December 2024
Darwin 87.4°F 88.2°F
Cairns 83.8°F 84.4°F
Fraser 81.2°F 81.0°F
Brisbane 80.0°F 79.9°F
Gold Coast 75.5°F 76.7°F
Perth 72.6°F 73.0°F
Sydney 72.1°F 72.2°F
Adelaide 68.1°F 70.8°F
Melbourne 64.8°F 69.9°F
Tasmania 58.7°F 62.3°F

Best time for vacation in Sydney

Sunniest months:
July 19 days
May 18 days
August 18 days
Warmest months:
January 78.3 °F
February 77.6 °F
March 76.3 °F
Warmest sea temp:
February 74.1 °F
March 73.7 °F
January 73.2 °F
Coldest months:
July 61.7 °F
June 61.9 °F
August 63.1 °F
Rainiest months:
June 4 days
March 4 days
November 3 days
Windiest months:
January 11.0 mph
December 11.0 mph
November 10.8 mph

Sydney on a weather map

Current weather
10:54
Sydney
+70°F
NW 11 mph
Feels like: +70°F
Precip.: 0%
Places in Australia:
Name
°F
Adelaide
+88°F
Brisbane
+73°F
Gold Coast
+72°F
Darwin
+86°F
Canberra
+84°F
Cairns
+81°F
Melbourne
+88°F
Perth
+73°F
Sydney
+70°F
Tasmania
+70°F
Fraser
+75°F
24 Hours Forecast
Sydney
Local time: 10:54
December 29, monday
1200
70°F
NW
11 mph
1500
70°F
NW
11 mph
1800
66°F
W
9 mph
2100
63°F
W
3 mph
December 30, tuesday
0000
63°F
NE
1 mph
0300
59°F
E
5 mph
0600
59°F
E
6 mph
0900
70°F
S
2 mph
Units of measurement: °C / °F