Honiara weather in August

In August, Honiara sees average daytime highs of 26°C and overnight lows near 23°C, with 189 mm of rain across 24.9 wet days and about 11.7 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 10% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 11 h 36 min at the start of August to 11 h 48 min by month's end. Set against the rest of the year, August is Honiara's 1st-clearest and 2nd-windiest month. For the whole year in context, see Honiara's year-round climate.

Daytime high
26°
12th warmest
Overnight low
23°
1st coldest
Rainfall
189 mm
24.9 wet days
Daylight
11 h 42 min
6:34 AM – 6:15 PM
Cloud cover
75%
1st clearest
Wind
11 km/h
2nd windiest
Solar energy
4.59 kWh/m²
Travel score
4.3
out of 10

Honiara is capital of Solomon Islands, on the tropical island Guadalcanal.

Density
2,559/km²
people per km²

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 26°C through the month.

A typical August day in Honiara reaches about 26°C in the afternoon and slips back to 23°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 25°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)
12623
22623
32623
42623
52623
62623
72623
82623
92623
102623
112623
122623
132623
142623
152623
162623
172623
182623
192623
202623
212623
222623
232623
242623
252623
262623
272623
282623
292623
302623
312623

Honiara 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
Jan27° / 24°36728.412.53.6
Feb27° / 24°34926.112.33.6
Mar27° / 24°36628.612.13.6
Apr27° / 24°30127.411.83.7
May27° / 24°22827.111.63.9
Jun26° / 24°17224.811.54.1
Jul26° / 23°20325.211.54.3
Aug26° / 23°18924.911.74.3
Sep26° / 23°20924.611.94.2
Oct26° / 23°27127.312.23.9
Nov27° / 23°28726.912.43.8
Dec27° / 24°33727.712.53.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22773
32773
42773
52872
62872
72872
82872
92872
102872
112872
122971
132971
142872
152773
162773
172773
182773
192674
202674
212674
222674
232674
242674
252674
262575
272674
282674
292674
302575
312575

Chance of precipitation in August

Any precipitation

Honiara gets around 189 mm of rain over 24.9 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 80% and peaks near 82% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
180
280
379
479
579
679
779
879
979
1079
1179
1279
1380
1480
1580
1681
1781
1881
1982
2082
2182
2282
2381
2481
2581
2681
2781
2881
2981
3081
3181

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 84% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
111485
211485
311485
411584
511584
621583
721583
821583
921583
1021682
1121682
1231681
1331681
1431681
1521682
1621583
1721583
1821583
1921583
2021583
2121583
2211584
2311584
2411584
2511485
2611485
2711485
2811485
2911485
3011485
3111386

Wind in August

Winds average 11 km/h in August.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 36 min at the start of August to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over August. Sunrise moves from 6:39 AM to 6:26 AM, and sunset from 6:14 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:396:14
211.66:396:14
311.66:386:14
411.66:386:14
511.66:386:14
611.66:376:14
711.66:376:14
811.66:376:14
911.66:366:15
1011.66:366:15
1111.66:366:15
1211.76:356:15
1311.76:356:15
1411.76:356:15
1511.76:346:15
1611.76:346:15
1711.76:336:15
1811.76:336:15
1911.76:326:15
2011.76:326:15
2111.76:316:15
2211.76:316:15
2311.76:306:15
2411.86:306:15
2511.86:296:15
2611.86:296:15
2711.86:286:15
2811.86:286:15
2911.86:276:15
3011.86:276:15
3111.86:266:14

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.59 kWh/m².

For context, solar energy here swings from a low near 4.17 kWh/m² to a high of 5.62 kWh/m² in November across the year — August's 4.59 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.9Bright
Planning a trip in August

Hazard calendar for Honiara

In seasonPeak

None of Honiara's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Honiara sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Cyclone
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Honiara?

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

4.3
Sightseeing
1st-best month of the year
4.2
Beach & pool
1st-best month of the year

August is a reasonable time to visit Honiara for sightseeing.

What to pack for Honiara in August

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

In August, Honiara sees daytime highs around 26°C and nights near 23°C. Pack rain gear. Worth having: light clothes and sun protection. About 25 days see rain.

rain gearlight clothessun protection

Sea temperature near Honiara 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 offshore is warmest in January at about 30°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°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan30Tropical
Feb30Tropical
Mar30Tropical
Apr30Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec30Tropical

UV index in Honiara in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Honiara peaks around March 13 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeMar 13UV 17Jun 20UV 10
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar17Extreme
Apr14Extreme
May12Extreme
Jun10Very high
Jul10Extreme
Aug12Extreme
Sep15Extreme
Oct15Extreme
Nov14Extreme
Dec14Extreme
Location & terrain

Where is Honiara?

Honiara sits at 9.4°S, 159.9°E, 49 m above sea level, in Solomon Islands. The nearest listed city is Tandai, 2.0 km away.

Topography around Honiara

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

Within 3 km, the terrain around Honiara has only modest variations in elevation — a maximum elevation change of 200 m around an average of 44 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,012 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,309 m.

The land around Honiara is covered by water (41%) and trees (31%) within 3 km, trees (54%) and water (39%) within 16 km, and water (73%) and trees (26%) within 80 km.

3 km
200 m
16 km
1,012 m
80 km
2,309 m
treesgrasslandartificial surfaceswater
August weather nearby: Tandai 2.0 km · Kola'a 2.0 km · Nggosi 3.0 km · Vura 4.0 km · Panatina 6.0 km · Malango 11 km · Arawa 600 km · Kokopo 1,019 km

Solomon Islands travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type I
230 V · 50 Hz
Prices
≈ 75% of US
price level, 2025
GDP per capita
$2,086
2025
Homicide rate
3.7
per 100k, 2008
Road deaths
16.5
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Protestant 73%Roman Catholic 20%other 4%other Christian 3%

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 Honiara (-9.4333°, 159.95°, elevation 49 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).