Avarua weather in August

In August, Avarua sees average daytime highs of 23°C and overnight lows near 22°C, with 72 mm of rain across 8.3 wet days and about 11.3 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 30% of the time in August, and the air most often feels muggy.

Daylight stretches from about 11 hours at the start of August to 11 h 36 min by month's end. Set against the rest of the year, August is Avarua's 1st-clearest and 5th-windiest month. For the whole year in context, see Avarua's year-round climate.

Daytime high
23°
12th warmest
Overnight low
22°
1st coldest
Rainfall
72 mm
8.3 wet days
Daylight
11 h 18 min
7:05 AM – 6:21 PM
Cloud cover
58%
1st clearest
Wind
24 km/h
5th windiest
Solar energy
4.27 kWh/m²
Travel score
7.1
out of 10

Avarua is capital city of the Cook Islands.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical August day in Avarua reaches about 23°C in the afternoon and slips back to 22°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 25°C. Set against its neighbours, August runs on par with July and on par with September.

18°20°22°24°26°151015202531
Avg high (°C)Avg low (°C)
12322
22322
32322
42322
52322
62322
72322
82322
92322
102322
112322
122322
132322
142322
152322
162322
172322
182322
192322
202322
212322
222322
232322
242322
252322
262322
272322
282322
292322
302322
312322

Avarua weather by month

How August compares with the rest of the year at a glance. August is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 25°21318.113.15.3
Feb27° / 25°1781712.75.1
Mar27° / 25°18618.612.15.3
Apr26° / 25°1531511.55.8
May25° / 24°12512.7116.3
Jun24° / 23°648.210.77.1
Jul23° / 22°989.210.87.1
Aug23° / 22°728.311.37.1
Sep23° / 22°738.411.97.1
Oct24° / 23°878.812.57.0
Nov25° / 24°10810.7136.6
Dec26° / 25°18914.513.35.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45545
55545
65545
75644
85545
95545
105545
115545
125446
135347
145248
155248
165050
175050
184951
194951
204852
214753
224654
234753
244753
254654
264555
274555
284654
294654
304753
314753

Chance of precipitation in August

Any precipitation

Avarua gets around 72 mm of rain over 8.3 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
629
729
829
928
1028
1128
1227
1327
1427
1526
1626
1726
1826
1926
2026
2126
2226
2326
2425
2525
2625
2725
2825
2924
3024
3124

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the muggy band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1622233612
2722243612
3722243511
4722253511
5722253511
6722253411
7722263411
8722263412
9722263412
10722263312
11722273312
12722273212
13722273212
14722273212
15822263212
16821263312
17821253312
18821253312
19921253412
20921243412
21921243412
22921243312
231021243312
241021243312
251021243312
261021243311
271021253311
281021253311
291021263211
30921263211
31921273211

Wind in August

Winds average 24 km/h in August.

Across August, daily wind ranges from about 24 km/h on the calmest days to 25 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
124breezy
224breezy
324breezy
424breezy
524breezy
624breezy
724breezy
824breezy
924breezy
1024breezy
1124breezy
1224breezy
1324breezy
1424breezy
1524breezy
1624breezy
1724breezy
1824breezy
1924breezy
2024breezy
2124breezy
2224breezy
2324breezy
2424breezy
2524breezy
2625breezy
2725breezy
2825breezy
2925breezy
3025breezy
3125breezy

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 hours at the start of August to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over August. Sunrise moves from 7:15 AM to 6:53 AM, and sunset from 6:16 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.07:156:16
211.07:146:16
311.17:136:17
411.17:136:17
511.17:126:17
611.17:126:18
711.17:116:18
811.17:116:18
911.17:106:19
1011.27:096:19
1111.27:096:20
1211.27:086:20
1311.27:076:20
1411.27:076:21
1511.27:066:21
1611.37:056:21
1711.37:046:22
1811.37:046:22
1911.37:036:22
2011.37:026:23
2111.47:016:23
2211.47:006:23
2311.47:006:23
2411.46:596:24
2511.46:586:24
2611.56:576:24
2711.56:566:25
2811.56:556:25
2911.56:546:25
3011.56:536:25
3111.66:536:26

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.27 kWh/m².

For context, solar energy here swings from a low near 3.44 kWh/m² to a high of 6.56 kWh/m² in December across the year — August's 4.27 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
43.9Moderate
54.0Moderate
64.0Bright
74.0Bright
84.1Bright
94.1Bright
104.1Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.6Bright
284.6Bright
294.6Bright
304.7Bright
314.7Bright
Planning a trip in August

Is August a good time to visit Avarua?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.1
Sightseeing
1st-best month of the year
5.6
Beach & pool
8th-best month of the year

August is one of the better times to visit Avarua for general sightseeing.

What to pack for Avarua in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Avarua sees daytime highs around 23°C and nights near 22°C. Worth packing: light clothes, rain gear and a windbreaker. About 8 days see rain.

light clothesrain geara windbreaker

Sea temperature near Avarua in August

The nearest coast averages about 24°C in August — 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.

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar28Warm
Apr27Warm
May26Warm
Jun25Warm
Jul25Warm
Aug24Warm
Sep24Warm
Oct25Warm
Nov26Warm
Dec27Warm

UV index in Avarua in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 — 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 13UV 16Jul 10UV 6
UV index (midday)Level
Jan15Extreme
Feb17Extreme
Mar13Extreme
Apr9Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep10Extreme
Oct12Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

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.

3 km
440 m
16 km
495 m
80 km
478 m
treesgrasslandartificial surfaceswater
August weather nearby: Bora Bora 994 km · Alofi 1,086 km · Moorea 1,120 km · Punaauia 1,138 km · Faaa 1,141 km · Papeete 1,146 km · Pago Pago 1,389 km · Apia 1,512 km

Cook Islands travel facts

Power plugs
Type I
240 V · 50 Hz
Religion
Protestant 55%Roman Catholic 17%none/unspecified 16%other 5%

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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).