Rarotonga Climate by Month
The weather in Rarotonga is characterized by a steady average temperature throughout the year.
It also has a relatively rainy climate with high levels of precipitation.
Now, let’s break down all the climate details for a clearer picture.
Average day and night temperature
In Rarotonga temperatures are generally consistent throughout the year. On average, daytime temperatures range from a comfortable 28°C in March to a comfortable 25°C in August. Nighttime temperatures can drop, with averages reaching 22°C in August.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Rarotonga experiences significant rainfall throughout the year, averaging 1681 mm of precipitation annually. The seasons in Rarotonga, bring significant changes in precipitation. The wettest month, January, receives heavy rainfall, with an average of 225 mm of precipitation. This rainfall is distributed across 13 rainy days. In contrast, the driest month, June, experiences much less rainfall, totaling 75 mm over 11 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
The sunniest days in Rarotonga occur in August, with around 6.4 hours of daily sunshine. Even in May, the least sunny month, Rarotonga doesn't shy away from the sun, still enjoying a comfortable 5.4 hours of daily sunlight.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in Rarotonga.
Relative humidity over the year
Average wind speed
The mean wind speed over the year in Rarotonga ranges from 3°C in March to 5°C in September.
The mean monthly wind speed over the year (meters per second)
The best time of year to visit Rarotonga in the Cook Islands
During the months of June, July, August, September and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
Rainy season in Rarotonga occurs in the months of January, February, March, April and December.
March has an average maximum temperature of 28°C and is the warmest month of the year.
The coldest month is August with an average maximum temperature of 25°C.
January tops the wettest month list with 225 mm of rainfall.
June is the driest month with 75 mm of precipitation.
August is the sunniest month with an average of 191 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
