Apia weather in August

In August, Apia sees average daytime highs of 27°C and overnight lows near 25°C, with 121 mm of rain across 21.1 wet days and about 11.5 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 44% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 11 h 24 min at the start of August to 11 h 42 min by month's end. Set against the rest of the year, August is Apia's 1st-clearest and 2nd-windiest month. For the whole year in context, see Apia's year-round climate.

Daytime high
27°
11th warmest
Overnight low
25°
2nd coldest
Rainfall
121 mm
21.1 wet days
Daylight
11 h 30 min
7:45 AM – 7:17 PM
Cloud cover
48%
1st clearest
Wind
20 km/h
2nd windiest
Solar energy
5 kWh/m²
Travel score
5.1
out of 10

Apia is capital of Samoa.

Density
326/km²
people per km²
Founded
1850

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 27°C through the month.

A typical August day in Apia reaches about 27°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 27°C. Set against its neighbours, August runs on par with July and on par with September.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12725
22725
32725
42725
52725
62725
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192725
202725
212725
222725
232725
242725
252725
262725
272725
282725
292725
302725
312725

Apia weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 26°36027.612.73.7
Feb28° / 26°32724.712.53.8
Mar28° / 26°27127.312.13.8
Apr28° / 26°21825.611.74.0
May28° / 26°20724.611.44.4
Jun27° / 26°14321.611.24.8
Jul27° / 25°1382111.35.1
Aug27° / 25°12121.111.55.1
Sep27° / 25°1592211.94.8
Oct27° / 25°22724.912.34.4
Nov27° / 25°27125.712.64.0
Dec28° / 26°34627.212.83.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 26% of August, with mostly cloudy or overcast conditions the remaining 30%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27228
37327
47426
57426
67426
77525
87525
97525
107426
117426
127327
137327
147327
157129
167129
177129
186931
196931
206832
216832
226733
236634
246634
256634
266634
276634
286733
296733
306733
316733

Chance of precipitation in August

Any precipitation

Apia gets around 121 mm of rain over 21.1 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 68% and peaks near 70% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
170
270
370
470
570
670
770
869
969
1069
1169
1268
1368
1468
1568
1668
1767
1867
1967
2067
2167
2267
2367
2467
2566
2666
2766
2866
2967
3067
3167

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 85% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1212851
2212851
3212851
4212851
5211861
6211861
7211861
8211861
9211861
10211861
11211861
12211870
13211870
14111880
15111880
16111880
17112870
18112870
19112870
20113860
21113860
22213841
23214831
24214831
25214831
26214831
27215821
28214831
29214831
30214831
31214831

Wind in August

Winds average 20 km/h in August.

Across August, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120breezy
220breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820breezy
920breezy
1020breezy
1120breezy
1220breezy
1320breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820breezy
1920breezy
2020breezy
2120breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3121breezy

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 24 min at the start of August to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over August. Sunrise moves from 7:52 AM to 7:36 AM, and sunset from 7:15 PM to 7:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:527:15
211.47:517:15
311.47:517:15
411.47:517:15
511.47:507:15
611.47:507:16
711.47:497:16
811.47:497:16
911.57:497:16
1011.57:487:16
1111.57:487:16
1211.57:477:17
1311.57:477:17
1411.57:467:17
1511.57:467:17
1611.57:457:17
1711.57:457:17
1811.67:447:17
1911.67:437:18
2011.67:437:18
2111.67:427:18
2211.67:427:18
2311.67:417:18
2411.67:407:18
2511.67:407:18
2611.77:397:18
2711.77:387:18
2811.77:387:18
2911.77:377:18
3011.77:367:19
3111.77:367:19

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5 kWh/m².

For context, solar energy here swings from a low near 4.2 kWh/m² to a high of 5.92 kWh/m² in October across the year — August's 5 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.1Bright
225.1Bright
235.1Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in August

Is August a good time to visit Apia?

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

5.1
Sightseeing
1st-best month of the year
5.1
Beach & pool
1st-best month of the year

August is a reasonable time to visit Apia for sightseeing.

What to pack for Apia in August

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

In August, Apia sees daytime highs around 27°C and nights near 25°C. Pack rain gear. Worth having: light clothes, sun protection and a windbreaker. About 21 days see rain.

rain gearlight clothessun protectiona windbreaker

Sea temperature near Apia in August

The nearest coast averages about 28°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 13 km away) is warmest in March at about 29°C and coldest in August near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Warm
Sep28Warm
Oct28Tropical
Nov29Tropical
Dec29Tropical

UV index in Apia in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Apia peaks around February 14 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 14UV 17Jun 19UV 9
UV index (midday)Level
Jan16Extreme
Feb18Extreme
Mar15Extreme
Apr13Extreme
May10Very high
Jun8Very high
Jul9Very high
Aug11Extreme
Sep14Extreme
Oct14Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Apia?

Apia sits at 13.8°S, 171.8°W, 9 m above sea level, in Samoa. The nearest listed city is Pago Pago, 125 km away.

Topography around Apia

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

Within 3 km, the terrain around Apia has significant variations in elevation — a maximum elevation change of 451 m around an average of 27 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,148 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,824 m.

The land around Apia is covered by water (41%) and trees (33%) within 3 km, water (49%) and trees (45%) within 16 km, and water (83%) within 80 km.

3 km
451 m
16 km
1,148 m
80 km
1,824 m
treesgrasslandartificial surfaceswatermangroves
August weather nearby: Pago Pago 125 km · Mata-Utu 480 km · Alofi 613 km · Nuku‘alofa 890 km · Labasa 995 km · Levuka 1,063 km · Nasinu 1,141 km · Funafuti 1,149 km

Samoa travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type I
230 V · 50 Hz
Prices
≈ 63% of US
price level, 2025
GDP per capita
$5,873
2025
Safe drinking water
63%
of population, 2024
Homicide rate
6.3
per 100k, 2018
Road deaths
13
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Protestant 55%Roman Catholic 19%Church of Jesus Christ 17%other Christian 4%

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 Apia (-13.8333°, -171.7667°, elevation 9 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).