December · Cook Islands
Best time to visit Rarotonga in December Weather, crowds & prices
Weather in Rarotonga in December
Average temperature 25°C, 190 mm of rain, about 29 days with 6+ hours of sunshine and 84% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
7.5/10
Ranked #9 of 12 months
- Avg temp
- 25°C
- Rainfall
- 190 mm
- Humidity
- 84%
- Days with 6h+ sun
- 29
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
December in Rarotonga scores 7.5/10 for beach and coastal travel - ranked #9 of 12. Expect around 25°C, 190 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Rarotonga is a round island of green peaks and a turquoise lagoon, easy to circle by bus or scooter.
December in Rarotonga: strong conditions, 9th of 12
With 25°C (78°F) on average, December delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
190 mm of rain makes this a wet month here, though with about 29 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 7.5/10 on the same scale — 9th of 12 months, versus 9.3/10 for the best month here.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella.
Budget for mid-season pricing, and crowds are moderate.
If your dates are flexible, November is materially better in Rarotonga — 1.8 points higher on the same scale.
Frequently asked
- What is the weather like in Rarotonga in December?
- In December, Rarotonga averages 25°C, 190 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 7.5/10.
- Is December a good time to visit Rarotonga?
- December earns a 7.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Rarotonga in December?
- Expect about 190 mm of rain in December. Average humidity is 84% and there are about 29 days with 6+ hours of sunshine.
Curated in Rarotonga
Tickets & experiences
Things to do in Rarotonga
Rarotonga, Cook Islands. Live activities and tours from GetYourGuide, matched to this destination.