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Rarotonga, Cook Islands · Tropical

Rarotonga in August: go or not?

Excellent time. Rarotonga in August scores 8.0/10.

📅 Data updated: October 2026 🛰️ ERA5 · 10 years 📍 21.24°S · 159.78°W
⚡ This month's verdict
Go for it
Rarotonga · August
8.0
20–22°
Temperature
21%
Rain
7h
Sun
🌴 Tropical☀️ High UV🌧️ Monsoon season
Photo : Luke Marshall via Unsplash
The month in detail

What to expect in August

Even in winter, Rarotonga enjoys 72°F. A real asset for escaping the European cold. Rain risk remains low (21% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if October (8.1/10) remains theoretically better.

August ranks 3 out of 12 months in Rarotonga. Compared to July: +0.6h of sun per day.

This month's conditions

What it's like in August

UV index
6 · high
sunscreen and hat advised
Feels like
comfortable
16°
Sea
24°C
pleasant for swimming
Daylight
11.3h of daylight
Air quality
good
AQI 28
Compare

Is August the right month?

The best month in Rarotonga is October (8.1/10), 0.1 pt higher than August.

See October →See all 12 months →
Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Rarotonga

GetYourGuide selection · free cancellation

See all →
Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.

Country · Cook Islands

🗣️LanguageEnglish
💶CurrencyNew Zealand Dollar ($)
🚗DrivingLeft-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘModerate · 3/5

🌡️ Climate

🌍Climate typeTropical
📈Climate trend ⓘStable
🔥Hottest monthJanuary · 77°F
❄️Coolest monthJune · 72°F
🌧️Rainiest month ⓘFebruary · 41%

🏝️ Tropical stay

🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Location

Where is Rarotonga ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Cook Islands
Tropical climate with a 8.1 → 7.7 gap between best and worst month. 10 years of ERA5 data to choose by project.
21.24°S · 159.78°W
Questions

Frequently asked questions

What is the best time to visit Rarotonga?
November is the best month with 72°F highs, 70°F lows, 8.2h of sunshine and 22.0% rainy days. The months of November & June offer comparable conditions.
How many hours of sunshine does Rarotonga get in November?
Rarotonga averages 8.2 sunshine hours per day in November. It is the sunniest month with a climate score of 7.6/10.
What is the rainiest month in Rarotonga?
February is the most unfavourable month with February has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Rarotonga in November?
In November, overnight lows reach 70°F, while afternoon highs average 72°F.
Is Rarotonga good in winter?
In winter (December-February), Rarotonga scores 7.3/10 on average — Acceptable conditions for cultural visits.. The best month overall remains November with a score of 7.6/10.
When should you avoid Rarotonga?
February is the most difficult month to visit Rarotonga, with February has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Rarotonga in August?
In August, the sea averages 76°F in Rarotonga: pleasant for swimming. Swimming is pleasant without a wetsuit.
Do you need sun protection in Rarotonga in August?
The average UV index reaches 6 in August in Rarotonga (high), with about 11.3h of daylight. Sunscreen and hat advised.