Rarotonga Weather in August
Rarotonga in August averages 25°C (77°F) during the day and 22°C (72°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Rarotonga in August
Looking at the last 30 years, the data shows about 14 days with rain, averaging 80 mm (3.1 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Rarotonga in August
August is one of the better months to visit Rarotonga. Expect 25°C (77°F) during the day and 22°C (72°F) at night. This kind of day-to-night contrast is typical for this time of year. Nights remain mild at 22°C (72°F), making evenings a pleasant time to be outdoors. While the temperatures are lower than usual, the month maintains its warmth throughout.
Sunshine in Rarotonga in August
Expect a lot of sunshine this month, with about 191 hours of sun. These sunny conditions add to the overall experience.
Wind Speed in Rarotonga in August
Wind speeds average 4 m/s (8 knots) during August. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Cook Islands, check out our Rarotonga's climate page.
Rarotonga Temperature in August
Min Temperature
22°C (72°F)
Max Temperature
25°C (77°F)
Chance of Rain
48%
Precipitation
80 mm (3.1 in)
Rainy days
14 days
Humidity
83%
Windspeed
4 m/s (8 knots)
Sunshine
191 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Rarotonga typically stay consistent throughout August, with daily highs averaging around 25°C (77°F). Nights are warm, with lows around 20°C (68°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Rarotonga in August
Browse day-by-day weather records for Rarotonga spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Rarotonga historical weather extremes in August
According to our 49 years of weather records for Rarotonga, the following extremes were recorded between 1976 and 2025.
- Rarotonga recorded its highest August temperature of 31°C (88°F) on August 27, 1999.
- The coldest August day was on August 17, 1986, with a maximum of 20°C (68°F).
- The coldest night in August in Rarotonga was on August 27, 2000, with a minimum of 12°C (54°F).
Best Places in the Cook Islands in August
Find out more about the weather in the Cook Islands and which places have the best travel conditions in this month. See all of the Cook Islands in August →
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What to Wear in Rarotonga in August
Pleasant temperatures in August mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Rarotonga in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Cook Islands, check out our Rarotonga's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Rarotonga climate overview or explore weather in the Cook Islands.
