Avarua in Winter
In winter (June, July and August), Avarua sees average daytime highs around 24°C and overnight lows near 22°C, with 234 mm of rain over about 26 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 24°C. The sky is clear or mostly clear about 29% of the time across winter, and the air most often feels muggy.
Winter is Avarua's best season of the year to visit on our travel score. Avarua has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Avarua's year-round climate.
- Avg daytime high
- 24°C
- coldest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 234 mm
- 26 wet days
- Avg wind
- 24 km/h
- Travel score
- 7.1
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Avarua in Winter
Across winter, daytime highs hold fairly steady around 24°C.
A typical winter day in Avarua reaches about 24°C and drops to 22°C overnight. The warmest of the three months is June, the coolest August.
Avarua weather by month
How the three winter months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 26° / 25° | 213 | 18.1 | 13.1 | 5.3 |
| Feb | 27° / 25° | 178 | 17 | 12.7 | 5.1 |
| Mar | 27° / 25° | 186 | 18.6 | 12.1 | 5.3 |
| Apr | 26° / 25° | 153 | 15 | 11.5 | 5.8 |
| May | 25° / 24° | 125 | 12.7 | 11 | 6.3 |
| Jun | 24° / 23° | 64 | 8.2 | 10.7 | 7.1 |
| Jul | 23° / 22° | 98 | 9.2 | 10.8 | 7.1 |
| Aug | 23° / 22° | 72 | 8.3 | 11.3 | 7.1 |
| Sep | 23° / 22° | 73 | 8.4 | 11.9 | 7.1 |
| Oct | 24° / 23° | 87 | 8.8 | 12.5 | 7.0 |
| Nov | 25° / 24° | 108 | 10.7 | 13 | 6.6 |
| Dec | 26° / 25° | 189 | 14.5 | 13.3 | 5.9 |
Cloud cover in Winter
The sky is clear or mostly clear about 29% of the time across winter.
Chance of precipitation in Winter
Avarua gets around 234 mm of rain over 26 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 24 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 48 min in early June to 11 h 36 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 3.8 kWh/m².
Is winter a good time to visit Avarua?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is one of the better times to visit Avarua for general sightseeing.
What to pack for Avarua in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Avarua sees daytime highs around 24°C and nights near 22°C. Worth packing: light clothes, rain gear and a windbreaker. About 26 days see rain.
Sea temperature near Avarua in Winter
The nearest coast averages about 25°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 14 km away) is warmest in March at about 28°C and coldest in August near 24°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 28 | 28 | 27 | 26 | 25 | 25 | 24 | 24 | 25 | 26 | 27 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 28 | Warm |
| Mar | 28 | Warm |
| Apr | 27 | Warm |
| May | 26 | Warm |
| Jun | 25 | Warm |
| Jul | 25 | Warm |
| Aug | 24 | Warm |
| Sep | 24 | Warm |
| Oct | 25 | Warm |
| Nov | 26 | Warm |
| Dec | 27 | Warm |
UV index in Avarua in Winter
Clear-sky midday UV across winter averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Avarua peaks around February 13 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 17 | 13 | 9 | 7 | 6 | 6 | 8 | 10 | 12 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | Very high | High | High | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 17 | Extreme |
| Mar | 13 | Extreme |
| Apr | 9 | Very high |
| May | 7 | Very high |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 8 | Very high |
| Sep | 10 | Extreme |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Where is Avarua?
Avarua sits at 21.2°S, 159.8°W, 7 m above sea level, in Cook Islands. The nearest listed city is Bora Bora, 994 km away.
Topography around Avarua
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Avarua.
Within 3 km, the terrain around Avarua has significant variations in elevation — a maximum elevation change of 440 m around an average of 65 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 495 m; within 80 km, significant variations in elevation — a maximum elevation change of 478 m.
The land around Avarua is covered by trees (49%) and water (41%) within 3 km, water (92%) within 16 km, and water (98%) within 80 km.
Cook Islands travel facts
- Power plugs
- Type I
- 240 V · 50 Hz
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Avarua (-21.2075°, -159.7755°, elevation 7 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.