Home › Cities › Cook Islands › Avarua
Avarua, Cook Islands climate
Af Tropical rainforest
Avarua has a remarkably steady tropical climate (Tropical rainforest, Köppen Af). The hottest month is February with an average daily high near 30°C, while the coldest is August averaging around 19°C at night. Around 1516 mm of precipitation falls each year, peaking in January (183 mm) and easing off in June (61 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Avarua climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 30 | 29 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 29 |
| Avg temp (°C) | 26 | 27 | 27 | 26 | 24 | 23 | 23 | 22 | 23 | 24 | 25 | 26 |
| Avg low (°C) | 24 | 24 | 24 | 23 | 21 | 20 | 19 | 19 | 20 | 20 | 22 | 23 |
| Precipitation (mm) | 183 | 176 | 164 | 169 | 140 | 61 | 93 | 82 | 85 | 73 | 115 | 175 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 30 | 29 | 27 | 26 |
| Avg temp (°C) | 26 | 27 | 27 | 26 | 24 | 23 |
| Avg low (°C) | 24 | 24 | 24 | 23 | 21 | 20 |
| Precipitation (mm) | 183 | 176 | 164 | 169 | 140 | 61 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 26 | 27 | 28 | 29 |
| Avg temp (°C) | 23 | 22 | 23 | 24 | 25 | 26 |
| Avg low (°C) | 19 | 19 | 20 | 20 | 22 | 23 |
| Precipitation (mm) | 93 | 82 | 85 | 73 | 115 | 175 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 71 | 68 | 69 | 70 | 67 | 65 | 66 | 68 | 69 | 69 | 70 |
| Relative humidity (%) | 82 | 81 | 81 | 80 | 79 | 78 | 78 | 78 | 79 | 80 | 80 | 81 |
| Wind speed (km/h) | 18.5 | 18.8 | 17.9 | 19.3 | 19.2 | 20.0 | 19.8 | 19.8 | 20.8 | 19.9 | 18.4 | 19.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 71 | 68 | 69 | 70 | 67 |
| Relative humidity (%) | 82 | 81 | 81 | 80 | 79 | 78 |
| Wind speed (km/h) | 18.5 | 18.8 | 17.9 | 19.3 | 19.2 | 20.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 66 | 68 | 69 | 69 | 70 |
| Relative humidity (%) | 78 | 78 | 79 | 80 | 80 | 81 |
| Wind speed (km/h) | 19.8 | 19.8 | 20.8 | 19.9 | 18.4 | 19.4 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Rarotonga Intl, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.