Average sea water temperature in September:
+76.0°F
| Minimum sea water temperature in September: | 80.4°F |
| Maximum sea water temperature in September: | 72.1°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 73.9°F. The highest and lowest sea temperatures during the month were 75.6°F and 72.1°F.
Monthly sea water temperature in Cairns, °F
Which Australia resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Darwin | 83.1°F | 82.9°F |
| Cairns | 73.9°F | 76.9°F |
| Fraser | 70.7°F | 70.5°F |
| Gold Coast | 69.8°F | 69.2°F |
| Brisbane | 69.5°F | 68.7°F |
| Perth | 64.2°F | 62.4°F |
| Sydney | 63.7°F | 64.4°F |
| Adelaide | 59.3°F | 57.5°F |
| Melbourne | 56.8°F | 54.2°F |
| Tasmania | 52.8°F | 53.5°F |
Best time for vacation in Cairns
Cairns on a weather map
Places in Australia:
Name
°F
24 Hours Forecast
Cairns
Local time: 17:14
October 05, monday
1800

72°F
W
4 mph
4 mph
2100

63°F
NW
4 mph
4 mph
October 06, tuesday
0000

57°F
N
3 mph
3 mph
0300

57°F
NE
3 mph
3 mph
0600

57°F
NE
3 mph
3 mph
0900

79°F
NW
4 mph
4 mph
1200

84°F
W
7 mph
7 mph
1500

82°F
W
7 mph
7 mph



























