Average sea water temperature in September:
+76.2°F
| Minimum sea water temperature in September: | 79.3°F |
| Maximum sea water temperature in September: | 72.9°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 75.0°F. The highest and lowest sea temperatures during the month were 77.0°F and 72.9°F.
Monthly sea water temperature in Avarua , °F
Which Cook Islands resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Avarua | 75.0°F | 76.6°F |
Best time for vacation in Avarua
Avarua on a weather map
24 Hours Forecast
Avarua
Local time: 01:49
September 18, friday
0300

70°F
NW
10 mph
10 mph
0600

70°F
NW
9 mph
9 mph
0900

70°F
W
9 mph
9 mph
1200

70°F
NW
11 mph
11 mph
1500

70°F
NW
12 mph
12 mph
1800

70°F
NW
9 mph
9 mph
2100

70°F
W
9 mph
9 mph
September 19, saturday
0000

70°F
W
6 mph
6 mph

























