Avarua Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Avarua.
Climate overview of Avarua
The climate in Avarua, Aitutaki, Cook Islands, is remarkably consistent, with temperatures year-round averaging 26°C (79°F). The warmest month is February at 28°C (82°F), and the coolest is August at 25°C (77°F).
The city has a wet climate, receiving around 1685 mm (66 in) of rainfall per year. Despite the high annual total, it has a distinct rainy season from December to March. January is the wettest month. The sunniest month is August, with 6.4 hours of sunshine per day on average.
Avarua Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Avarua - and find the best time to visit.
Monthly Temperature in Avarua
In Avarua temperatures are generally consistent throughout the year. On average, daytime temperatures range from a comfortable 28°C (82°F) in February to a comfortable 25°C (77°F) in August.
Nighttime temperatures range from 26°C (79°F) in February to 22°C (72°F) in August.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Avarua
Avarua experiences significant rainfall throughout the year, averaging 1685 mm (66 in) of precipitation annually. The seasons in Avarua bring significant changes in precipitation. The wettest month, January, receives heavy rainfall, with an average of 225 mm (8.9 in) of precipitation. This rainfall is distributed across 13 rainy days.
In contrast, the driest month, June, experiences much less rainfall, totaling 75 mm (3 in) over 11 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Avarua Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Avarua
The sunniest days in Avarua occur in August, with around 6.4 hours of daily sunshine. Even in May, the least sunny month, Avarua doesn't shy away from the sun, still enjoying a comfortable 5.4 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Avarua by Month
The city experiences its highest humidity in March, reaching 90%. In October, the humidity drops to its lowest level at 79%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Avarua
The average wind speed over the year ranges from 3 m/s (6 knots) to 5 m/s (10 knots). It is lower in March and April and higher in September. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Avarua
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, August, September and October
- Warmest weather: January, February, March, April and December
- Most sunshine: August, September and October
- Fewest rainy days: June, September and October
- Seasonal pattern: A distinct rainy season from December to March
Frequently asked questions about the climate in Avarua
What is the best time to visit Avarua?
June, August, September and October typically offer the most optimal weather in Avarua. In contrast, January, February and December tend to have less optimal conditions. Avarua has a distinct rainy season from December to March.
What temperatures can I expect in Avarua?
Daytime highs range from 25°C (77°F) in August to 28°C (82°F) in February. Nighttime lows range from 22°C (72°F) to 26°C (79°F). Temperatures stay relatively stable year-round.
How much rain does Avarua get?
Annual rainfall is around 1685 mm (66 in). January is the wettest month with 225 mm (8.9 in), while June is the driest with 75 mm (3 in).
How sunny is Avarua?
Avarua receives around 2,096 hours of sunshine per year. August is the sunniest month with 191 hours, while May is the cloudiest with just 162 hours. Overall, Avarua enjoys abundant sunshine.
Avarua 3-Day Forecast
Avarua on the map
Avarua is highlighted - select any city to see its climate.
Popular this month
Where to go in September - average daytime high across popular destinations.
Penrhyn
29°C (84°F) Aitutaki26°C (79°F) Arutanga26°C (79°F) Muri25°C (77°F) Avarua25°C (77°F) Arorangi25°C (77°F) Rarotonga25°C (77°F) Ngatangiia25°C (77°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.