You should expect the average temperature in Rarotonga throughout May is 23 with a general average high of 27 and low being around 22 degrees celsius. We have put some more detail below here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 23 |
| High Temperature | 27 |
| Low Temperature | 22 |
| Sunshine Per Day | 12 |
Useful Links: Rarotonga Weather: Average Weather & Yearly Climate