| Period | Average Temperature (Celsius) | Total Rainfall (mm) | Total Hours of Sunshine | ||||
| Rarotonga | Aitutaki | Penrhyn | Rarotonga | Aitutaki | Penrhyn | Rarotonga | |
| YEAR | |||||||
| 2005 | 24.6 | 25.5 | 29.0 | 1,969 | 793 | 1,179 | 2,099 |
| 2006 | 24.8 | 25.5 | 29.1 | 2,246 | 1,460 | 1,882 | 2,169 |
| 2007 | 25.0 | 25.3 | 29.0 | 1,991 | 1,828 | 2,024 | 2,084 |
| 2008 | 25.0 | 26.1 | 28.5 | 1,991 | 1,358 | 1,213 | 2,088 |
| 2009 | 24.3 | 26.1 | 28.9 | 1,657 | 1,230 | 1,356 | 2,282 |
| QUARTER | |||||||
| 2005 | |||||||
| Mar | 26.6 | 27.2 | 28.9 | 708 | 143 | 459 | 559 |
| Jun | 23.9 | 25.3 | 29.4 | 374 | 187 | 272 | 444 |
| Sep | 22.5 | 24.7 | 28.9 | 437 | 225 | 212 | 574 |
| Dec | 25.4 | 24.6 | 28.9 | 450 | 238 | 236 | 522 |
| 2006 | |||||||
| Mar | 27.2 | 27.4 | 29.0 | 848 | 264 | 774 | 510 |
| Jun | 24.6 | 25.9 | 28.9 | 399 | 293 | 394 | 501 |
| Sep | 22.7 | 24.4 | 29.0 | 675 | 317 | 299 | 552 |
| Dec | 24.5 | 24.2 | 29.4 | 324 | 586 | 415 | 606 |
| 2007 | |||||||
| Mar | 26.4 | 24.1 | 29.3 | 818 | 747 | 985 | 551 |
| Jun | 25.2 | 26.4 | 29.3 | 465 | 188 | 315 | 465 |
| Sep | 23.2 | 24.6 | 28.5 | 165 | 283 | 497 | 530 |
| Dec | 25.0 | 26.1 | 29.0 | 543 | 610 | 227 | 538 |
| 2008 | |||||||
| Mar | 26.3 | 26.1 | 28.6 | 768 | 474 | 437 | 350 |
| Jun | 24.6 | 26.1 | 28.9 | 447 | 116 | 203 | 492 |
| Sep | 23.0 | 26.0 | 27.9 | 200 | 132 | 307 | 553 |
| Dec | 25.9 | 26.2 | 28.7 | 576 | 636 | 266 | 693 |
| 2009 | |||||||
| Mar | 27.0 | 27.3 | 28.8 | 669 | 451 | 388 | 595 |
| Jun | 24.3 | 25.8 | 28.9 | 454 | 294 | 315 | 535 |
| Sep | 22.3 | 25.1 | 28.8 | 264 | 208 | 333 | 523 |
| Dec | 23.6 | 26.2 | 28.9 | 269 | 313 | 328 | 630 |
Source: Meteorological Office, Rarotonga.