Average sea water temperature in December:
+71.5°F
| Minimum sea water temperature in December: | 75.6°F |
| Maximum sea water temperature in December: | 67.8°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 71.9°F. The highest and lowest sea temperatures during the month were 73.0°F and 70.9°F.
Monthly sea water temperature in Perth, °F
Which Australia resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| Darwin | 87.5°F | 88.2°F |
| Cairns | 83.8°F | 84.4°F |
| Fraser | 81.1°F | 81.0°F |
| Brisbane | 79.6°F | 79.9°F |
| Gold Coast | 74.6°F | 76.7°F |
| Perth | 71.9°F | 73.0°F |
| Sydney | 71.1°F | 72.2°F |
| Adelaide | 67.2°F | 70.8°F |
| Melbourne | 64.0°F | 69.9°F |
| Tasmania | 57.6°F | 62.3°F |
Best time for vacation in Perth
Perth on a weather map
Places in Australia:
Name
°F
24 Hours Forecast
Perth
Local time: 04:32
December 17, wednesday
0600

68°F
NE
12 mph
12 mph
0900

70°F
NE
12 mph
12 mph
1200

72°F
NE
14 mph
14 mph
1500

73°F
NE
16 mph
16 mph
1800

70°F
NE
17 mph
17 mph
2100

68°F
N
13 mph
13 mph
December 18, thursday
0000

66°F
N
12 mph
12 mph
0300

63°F
N
11 mph
11 mph




























