Cook Islands
Rarotonga in August: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Rarotonga in August is climatically well suited to city breaks, beach holidays, family holidays and active holidays and hiking. The average daily high is around 23 °C, and the sea is about 24 °C. With about 12 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
79/100 · #2
Warmth
#12
Dryness
#3
Sun
#9
Sea warmth
#12
Published best categories: Overall, City break, Active, Family
Rarotonga · AugustPhoto: Archives New Zealand from New Zealand · CC BY-SA 2.0Climate facts
- Average high
- 23 °C
- Average low
- 23 °C
- Sea
- 24 °C
- Rainy days (est.)
- 12 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 78 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| July | 24 | 23 | 12 | 83 | 4.7 | 78 | 5.5 | 25 | 78 |
| August (selected) | 23 | 23 | 12 | 69 | 5.6 | 78 | 5.5 | 24 | 79 |
| September | 24 | 23 | 13 | 78 | 6.7 | 79 | 5.8 | 24 | 78 |
How do the previous and next months compare?
Baseline: August (79/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| July | -1 | +0.3 °C | +0.4 °C | -0.2 | +13.8 mm | -0.9 h | ±0 % | ±0 m/s | +0.3 °C |
| September | -1 | +0.1 °C | +0.2 °C | +0.8 | +9 mm | +1.1 h | +1.1 % | +0.3 m/s | ±0 °C |
All twelve months in context
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Where to stay in Rarotonga
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Useful next decisions
Frequently asked questions
How warm is Rarotonga in August?
The average daily high is around 23 °C, with an average daily low of about 23 °C.
Can you swim in Rarotonga in August?
The sea is about 24 °C (warm).
Does it rain a lot in Rarotonga in August?
The curated estimate is about 12 rainy days per month, not a directly measured long-term average. Total precipitation averages around 69 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Rarotonga?
By the climate score, June, July, August and September are the strongest months for Rarotonga. For a beach trip: June, September, October and November. August is one of them.