Monthly climate in Avarua, Cook Islands

Under the Köppen–Geiger climate classification Avarua features a tropical rainforest climate (Af). Temperatures typically range between 23 °C (73 °F) and 27 °C (80 °F) through the year, but rarely can drop to 19 °C (66 °F) or can rise to as high as 29 °C (84 °F). The average annual precipitation amounts to about 1825 mm (71.9 inches) and receives 189 rainy days on the 1 mm (0.04 inches) threshold annually. Avarua enjoys an average of 3120 hours of sunshine throughout the year, and daylight varies from 10 hours 50 minutes to 13 hours 23 minutes per day.

Monthly average temperatures in Avarua, Cook Islands

The warmest months in Avarua are January, February and March, with daily mean temperatures ranging from 26 to 27 °C (79 - 80 °F) throughout the day. The coldest temperatures usually occur in August, September and October, when daily mean temperatures range from 23 to 23 °C (73 - 74 °F) throughout the day. On average each year, Avarua experiences 187 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average precipitation in Avarua, Cook Islands

Avarua usually has the most precipitation in February, March and December, with an average of 21 rainy days and 242 mm (9.5 inches) of precipitation per month. The driest months in Avarua are June, July and September. On average, 76 mm (3.0 inches) of precipitation falls during these months.

Monthly sunshine hours in Avarua, Cook Islands

The sunniest months in Avarua are March, November and December, when the sun shines an average of 9 hours 14 minutes a day. Least sunny months in Avarua: May, June and July receive an average of 7 hours 47 minutes of sunshine daily.

Solar UV radiation in Avarua, Cook Islands

Avarua experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 15 - 16, which corresponds to the Extreme category of sun exposure. May, June and July are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Avarua UV Index data.