August · Cook Islands
Best time to visit Rarotonga in August Weather, crowds & prices
Weather in Rarotonga in August
Average temperature 23°C, 66 mm of rain, about 16 days with 6+ hours of sunshine and 78% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
8.2/10
Ranked #4 of 12 months
- Avg temp
- 23°C
- Rainfall
- 66 mm
- Humidity
- 78%
- Days with 6h+ sun
- 16
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$ · Moderate Cost ($$)
August in Rarotonga scores 8.2/10 for beach and coastal travel - an above-average month (#4 of 12). Expect around 23°C, 66 mm of rain, and roughly 16 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.
August holds up well in Rarotonga — 4th best month
With 23°C (74°F) on average, August delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
Budget for roughly 66 mm of rain this month — a flexible day or two helps — with about 16 days with 6+ hours of sunshine and 11.3 hours of daylight to work around it.
That is 8.2/10 on the same scale — 4th of 12 months, versus 9.3/10 for the best month here.
Pack light clothing, swimwear and real sun protection, a packable rain layer.
Expect mid-season pricing, and this is one of the busiest months here.
Frequently asked
- What is the weather like in Rarotonga in August?
- In August, Rarotonga averages 23°C, 66 mm of rain, and about 16 days with 6+ hours of sunshine. Its climate-comfort score is 8.2/10.
- Is August a good time to visit Rarotonga?
- August earns a 8.2/10 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 August?
- Expect about 66 mm of rain in August. Average humidity is 78% and there are about 16 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.