Rarotonga island in september: average Weather, Temperature and Climate
Weather in Rarotonga island in september 2025
The weather in Rarotonga island in the month of september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather UV index: 6
Weather at 6am
76°F
Moderate rain at times
34% of time
33%
14%
14%
Weather at 12pm
76°F
Partly Cloudy
34% of time
25%
21%
15%
Weather at 6pm
76°F
Partly Cloudy
36% of time
25%
18%
18%
Weather at 3am
76°F
34%
31%
19%
15%
Evolution of daily average temperature and precipitation in Rarotonga island in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Rarotonga island in september.
The climate of Rarotonga island in september is good
In september in Rarotonga island, the climate is wet (with 3.4in of precipitation over 4 days). The weather is better from the previous month since in august it receives an average of 4.4in of precipitation over 5 days.
The climate comfortable here this month. The thermometer averaged maximum of 76°F. On average, the recorded minimum temperature is 74°F. Thus, the mean temperature average on this month of september in Rarotonga island is 76°F. Note that these seasonal averages are in contrast with those observed in Rarotonga island in the month of september with a maximum record of 81°F in 2016 and a minimum record of 59°F in 2020.
On this month of september, day length in Rarotonga island is generally 11:58. The sun rises at 06:35 and sunset is at 18:33.
With a good climate, september is advisable to go in this locality in Cook islands.
Seasonal average climate and temperature of Rarotonga island in september
Check below seasonal norms These datas are compiled from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 76°F | ||||
| Highest temperature | 76°F | ||||
| Lowest temperature | 74°F | ||||
| Highest record temperature | 81°F (2016) | ||||
| Lowest record temperature | 59°F (2020) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 77°F | ||||
| Lowest sea temperature | 74°F | ||||
| Highest sea temperature | 80°F | ||||
| Wind | |||||
| Wind speed | 28km/h | ||||
| Wind temperature | 76°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.4in | ||||
| Number of days with rainfall | 4 day(s) (14%) | ||||
| Record daily rainfall | 2.3in (2009) | ||||
| Other climate data | |||||
| Humidity | 80% | ||||
| Visibility | 9.69km | ||||
| Cloud cover | 50% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 10 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:35 | ||||
| Time of sunset | 18:33 | ||||
| Length of day | 11:58 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Rarotonga island in september 2024:
74°F to 74°F
70°F to 74°F
74°F to 76°F
74°F to 76°F
74°F to 74°F
74°F to 74°F
74°F to 76°F
72°F to 74°F
74°F to 74°F
74°F to 74°F
74°F to 74°F
74°F to 74°F
74°F to 74°F
74°F to 74°F
72°F to 74°F
72°F to 74°F
74°F to 76°F
74°F to 76°F
72°F to 74°F
72°F to 72°F
72°F to 72°F
72°F to 72°F
72°F to 74°F
72°F to 76°F
74°F to 74°F
72°F to 72°F
72°F to 74°F
72°F to 74°F
72°F to 72°F
70°F to 72°F
Map: other cities in Cook islands in september
Cities near Rarotonga island:
| Avarua in september | good weather |
| Mangaia island in september | good weather |
| Atiu island in september | good weather |
| Mitiaro island in september | good weather |
| Aitutaki island in september | good weather |
| Mauke island in september | good weather |
| Palmerston island in september | good weather |
| Manihiki island in september | good weather |
| Rakahanga island in september | good weather |
| Pukapuka island in september | good weather |
| Penrhyn island in september | good weather |
Click over cities on the map for information about the weather in september.
Rarotonga island
perfect weather
good
tolerable
bad
very bad
Weather data for Rarotonga island in september:
Weather data for Rarotonga island for september are derived from an average of the weather forecast since 2009 in Rarotonga island. There is a margin of error and these forecasts are to be considered as general information only. The weather in Rarotonga island can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Rarotonga island.