Nuku‘alofa weather in August

In August, Nuku‘alofa sees average daytime highs of 23°C and overnight lows near 21°C, with 109 mm of rain across 8.6 wet days and about 11.3 hours of daylight. It is the 12th-warmest and 5th-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 29% of the time in August, and the air most often feels comfortable.

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 Nuku‘alofa's 2nd-clearest and 5th-windiest month. For the whole year in context, see Nuku‘alofa's year-round climate.

Daytime high
23°
12th warmest
Overnight low
21°
1st coldest
Rainfall
109 mm
8.6 wet days
Daylight
11 h 18 min
7:07 AM – 6:23 PM
Cloud cover
60%
2nd clearest
Wind
25 km/h
5th windiest
Solar energy
4.05 kWh/m²
Travel score
6.9
out of 10

Nuku‘alofa is capital city of Tonga.

Density
1,963/km²
people per km²
Founded
1795

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 Nuku‘alofa reaches about 23°C in the afternoon and slips back to 21°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 24°C. Set against its neighbours, August runs on par with July and on par with September.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
12322
22322
32322
42322
52322
62322
72322
82322
92322
102322
112322
122322
132322
142322
152322
162321
172321
182321
192321
202321
212321
222321
232321
242321
252321
262321
272321
282321
292321
302321
312321

Nuku‘alofa weather by month

How August compares with the rest of the year at a glance. August is the 12th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 25°19515.513.15.7
Feb27° / 26°20316.512.75.3
Mar27° / 26°23018.312.15.3
Apr26° / 25°16713.411.56.0
May25° / 24°10310.1116.8
Jun24° / 23°1068.810.77.0
Jul23° / 22°968.410.87.0
Aug23° / 21°1098.611.36.9
Sep23° / 22°1069.511.96.9
Oct23° / 22°938.512.57.1
Nov25° / 23°999.2136.9
Dec26° / 25°10512.113.36.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35050
45050
55050
65050
75149
85149
95149
105149
115149
125050
135050
144951
154951
164951
175050
185050
195050
205050
214951
224951
234951
244852
254852
264852
274951
284951
294951
304951
315050

Chance of precipitation in August

Any precipitation

Nuku‘alofa gets around 109 mm of rain over 8.6 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
326
426
526
627
727
827
927
1027
1128
1228
1329
1429
1530
1630
1730
1830
1929
2029
2129
2229
2328
2428
2528
2628
2729
2829
2929
3029
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
192928278
282928278
382829278
472829278
572829278
672830288
772830287
872830287
972830297
1072830296
1172829296
1272829296
1382829296
1482828296
1592928296
1692927296
1792927286
18103027286
19103126276
20103126276
21113226266
22113225266
23113225256
24113226256
25113226256
26113226246
27113227246
28113128246
29113029246
30103029256
31102930256

Wind in August

Winds average 25 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
125breezy
225breezy
325breezy
425breezy
525breezy
625breezy
725breezy
825breezy
924breezy
1024breezy
1124breezy
1224breezy
1324breezy
1424breezy
1524breezy
1624breezy
1724breezy
1824breezy
1924breezy
2024breezy
2124breezy
2225breezy
2325breezy
2425breezy
2525breezy
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 7:16 AM to 6:54 AM, and sunset from 6:18 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.07:166:18
211.07:166:18
311.17:156:18
411.17:156:19
511.17:146:19
611.17:136:19
711.17:136:20
811.17:126:20
911.17:126:21
1011.27:116:21
1111.27:106:21
1211.27:106:22
1311.27:096:22
1411.27:086:22
1511.37:086:23
1611.37:076:23
1711.37:066:23
1811.37:056:24
1911.37:046:24
2011.37:046:24
2111.47:036:25
2211.47:026:25
2311.47:016:25
2411.47:006:26
2511.47:006:26
2611.56:596:26
2711.56:586:26
2811.56:576:27
2911.56:566:27
3011.56:556:27
3111.66:546:27

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.05 kWh/m².

For context, solar energy here swings from a low near 3.27 kWh/m² to a high of 6.69 kWh/m² in December across the year — August's 4.05 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.9Moderate
124.0Moderate
134.0Moderate
144.0Moderate
154.0Bright
164.0Bright
174.0Bright
184.1Bright
194.1Bright
204.1Bright
214.2Bright
224.2Bright
234.2Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.4Bright
294.4Bright
304.5Bright
314.5Bright
Planning a trip in August

Is August a good time to visit Nuku‘alofa?

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

6.9
Sightseeing
4th-best month of the year
5.2
Beach & pool
12th-best month of the year

August is a reasonable time to visit Nuku‘alofa for sightseeing.

What to pack for Nuku‘alofa in August

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

In August, Nuku‘alofa sees daytime highs around 23°C and nights near 21°C. Worth packing: light clothes, rain gear and a windbreaker. About 9 days see rain.

light clothesrain geara windbreaker

Sea temperature near Nuku‘alofa 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 offshore 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
Jul24Warm
Aug24Refreshing
Sep24Refreshing
Oct24Warm
Nov25Warm
Dec26Warm

UV index in Nuku‘alofa 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 Nuku‘alofa peaks around February 12 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 7 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 12UV 16Jun 23UV 7
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar14Extreme
Apr10Very high
May7Very high
Jun7High
Jul7High
Aug8Very high
Sep11Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Nuku‘alofa?

Nuku‘alofa sits at 21.1°S, 175.2°W, 1 m above sea level, in Tonga. The nearest listed city is Alofi, 598 km away.

Topography around Nuku‘alofa

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nuku‘alofa.

Within 3 km, the terrain around Nuku‘alofa has only modest variations in elevation — a maximum elevation change of 21 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 73 m; within 80 km, significant variations in elevation — a maximum elevation change of 299 m.

The land around Nuku‘alofa is covered by water (52%) and artificial surfaces (20%) within 3 km, water (68%) within 16 km, and water (97%) within 80 km.

3 km
21 m
16 km
73 m
80 km
299 m
treesgrasslandartificial surfaceswatermangroves
August weather nearby: Alofi 598 km · Levuka 668 km · Nasinu 741 km · Suva 746 km · Lami 749 km · Labasa 775 km · Sigatoka 833 km · Nadi 858 km

Tonga travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type I
230 V · 50 Hz
Prices
≈ 75% of US
price level, 2025
GDP per capita
$6,547
2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.9
per 100k, 2019
Road deaths
33
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Protestant 64%Church of Jesus Christ 20%Roman Catholic 14%other 2%

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 Nuku‘alofa (-21.1368°, -175.2011°, elevation 1 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).