Sunshine plays a big role in understanding the climate of a city. This page shows the total number of hours of direct sunlight per month and the average hours per day in Rarotonga, Aitutaki, Cook Islands. Long-term data from 1990 to 2020 was used to calculate these averages.
The sunniest days in Rarotonga occur in August, with around 191 hours of sunshine. Even in May, the least sunny month, Rarotonga still enjoys a comfortable 162 hours of sunlight. The total annual sunshine amounts to 2096 hours.
Year-round, Rarotonga offers plenty of sunlight to enjoy during your holiday. The difference between the sunniest month, August, with 6.4 hours of daily sunshine, and May, the least sunny month, with 5.4 hours, is minimal.
Rarotonga enjoys an average of 2096 hours of sunshine annually. Let’s compare this with some popular tourist destinations:
Athens, Greece, enjoys 2769 hours of sunshine each year, making it one of the sunniest destinations in the Mediterranean region.
In contrast, Tromsø , Norway, receives only about 1270 hours of sunshine per year, known for the polar night with no sunlight for weeks during winter.
Beijing, China, has 2505 hours of sunshine annually, with clear, sunny days in winter.
Adelaide, Australia, enjoys 2770 hours of sunshine annually, with long, sunny summers.
January, Rarotonga’s wettest month, receives 197 mm (7.8 in) of rainfall and has a maximum daytime temperature of 28°C (82°F). During the driest month June you can expect a temperature of 26°C (79°F).
For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Rarotonga Precipitation page.
Pick a month to see the average temperature, rainfall and sunshine in Rarotonga - and find the best time to visit.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Rarotonga climate overview or explore weather in the Cook Islands.
Where to go in October - average daytime high across popular destinations.
Penrhyn
29°C (84°F) Aitutaki
27°C (81°F) Arutanga27°C (81°F) Muri25°C (77°F) Avarua25°C (77°F) Arorangi25°C (77°F) Rarotonga25°C (77°F) Ngatangiia25°C (77°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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