Okinawa weather in August

In August, Okinawa sees average daytime highs of 29°C and overnight lows near 27°C, with 178 mm of rain across 14.8 wet days and about 12.9 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 40% of the time in August, and the air most often feels miserable.

Daylight stretches from about 13 h 18 min at the start of August to 12 h 36 min by month's end. Set against the rest of the year, August is Okinawa's 3rd-clearest and 8th-windiest month. For the whole year in context, see Okinawa's year-round climate.

Daytime high
29°
1st warmest
Overnight low
27°
12th coldest
Rainfall
178 mm
14.8 wet days
Daylight
12 h 54 min
6:05 AM – 7:01 PM
Cloud cover
56%
3rd clearest
Wind
23 km/h
8th windiest
Solar energy
5.95 kWh/m²
Travel score
5.1
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical August day in Okinawa reaches about 29°C in the afternoon and slips back to 27°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 29°C. Set against its neighbours, August runs on par with July and about 1°C warmer than September.

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12927
22927
32927
42927
52927
62927
72927
82927
92927
102927
112927
122927
132927
142927
152927
162927
172927
182927
192927
202927
212927
222927
232927
242927
252927
262927
272927
282927
292927
302827
312827

How August really feels in Okinawa

Once humidity and wind are folded in, August averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Okinawa weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 17°10311.710.55.7
Feb19° / 17°9611.411.15.6
Mar20° / 18°12812.711.85.9
Apr22° / 20°15012.712.66.1
May24° / 23°20713.813.36.1
Jun27° / 26°21815.813.65.4
Jul29° / 27°12611.413.55.5
Aug29° / 27°17814.812.95.1
Sep28° / 27°19914.212.25.7
Oct26° / 25°14111.611.46.5
Nov24° / 22°10110.610.76.7
Dec21° / 19°11311.210.46.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 13% of August, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
34951
44951
54951
64951
74951
84951
95050
105050
115050
125149
135149
145248
155347
165347
175446
185644
195644
205743
215743
225743
235644
245644
255644
265644
275644
285545
295545
305545
315644

Chance of precipitation in August

Any precipitation

Okinawa gets around 178 mm of rain over 14.8 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 48% and peaks near 50% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
146
247
348
448
549
649
749
850
950
1050
1150
1250
1349
1449
1548
1648
1747
1847
1947
2046
2146
2247
2347
2447
2547
2648
2749
2849
2950
3050
3150

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100694
200694
300694
400694
500595
600595
700595
800595
900595
1000595
1100595
1200595
1300595
1400694
1500694
1600793
1700793
1800892
1900991
2000991
21001090
22001189
23011287
24011386
25011485
26011584
27111682
28111781
29121879
30121879
31121978

Wind in August

Winds average 23 km/h in August.

Across August, daily wind ranges from about 22 km/h on the calmest days to 24 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
123breezy
223breezy
324breezy
424breezy
524breezy
624breezy
724breezy
824breezy
924breezy
1024breezy
1124breezy
1223breezy
1323breezy
1423breezy
1523breezy
1623breezy
1723breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 18 min at the start of August to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over August. Sunrise moves from 5:57 AM to 6:12 AM, and sunset from 7:12 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:577:12
213.25:587:12
313.25:587:11
413.25:597:10
513.25:597:10
613.26:007:09
713.16:007:08
813.16:017:08
913.16:017:07
1013.16:027:06
1113.06:027:05
1213.06:037:04
1313.06:037:04
1413.06:047:03
1513.06:047:02
1612.96:057:01
1712.96:057:00
1812.96:066:59
1912.96:066:58
2012.86:076:57
2112.86:076:56
2212.86:086:55
2312.86:086:54
2412.76:096:53
2512.76:096:52
2612.76:096:51
2712.76:106:50
2812.66:106:49
2912.66:116:48
3012.66:116:47
3112.66:126:46

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.95 kWh/m².

For context, solar energy here swings from a low near 2.39 kWh/m² to a high of 6.42 kWh/m² in July across the year — August's 5.95 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.1Intense
36.1Intense
46.1Intense
56.0Intense
66.0Intense
76.0Intense
86.0Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
136.0Bright
146.0Bright
156.0Bright
166.0Bright
176.0Bright
186.0Bright
196.0Bright
206.0Bright
216.0Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.8Bright
285.8Bright
295.8Bright
305.7Bright
315.7Bright
Planning a trip in August

Hazard calendar for Okinawa

In seasonPeak

In August, Okinawa sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Okinawa sits in the Pacific typhoon belt; the season peaks July–October.

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

Is August a good time to visit Okinawa?

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

5.1
Sightseeing
12th-best month of the year
6.3
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Okinawa for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Okinawa in August

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

In August, Okinawa sees daytime highs around 29°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 15 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near Okinawa in August

The nearest coast averages about 29°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 August at about 29°C and coldest in February near 22°C.

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

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar22Refreshing
Apr23Refreshing
May25Warm
Jun27Warm
Jul29Tropical
Aug29Tropical
Sep28Tropical
Oct27Warm
Nov25Warm
Dec24Refreshing

UV index in Okinawa 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 Okinawa peaks around July 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 11UV 12Dec 22UV 5
UV index (midday)Level
Jan5High
Feb7Very high
Mar9Very high
Apr8Very high
May10Very high
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep11Extreme
Oct8Very high
Nov7High
Dec5Moderate

Air quality in Okinawa in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Okinawa is worst in March — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 2017 µg/m³Jul 128 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb14Moderate
Mar17Moderate
Apr16Moderate
May13Moderate
Jun9Good
Jul8Good
Aug10Good
Sep9Good
Oct9Good
Nov10Good
Dec10Good
Location & terrain

Where is Okinawa?

Okinawa sits at 26.3°N, 127.8°E, 112 m above sea level, in Japan. The nearest listed city is Kishaba, 4.0 km away.

Topography around Okinawa

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

Within 3 km, the terrain around Okinawa has only modest variations in elevation — a maximum elevation change of 126 m around an average of 69 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 222 m; within 80 km, significant variations in elevation — a maximum elevation change of 491 m.

The land around Okinawa is covered by artificial surfaces (70%) and trees (24%) within 3 km, water (62%) within 16 km, and water (91%) within 80 km.

3 km
126 m
16 km
222 m
80 km
491 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Kishaba 4.0 km · Chatan 4.0 km · Gushikawa 7.0 km · Katsuren-haebaru 7.0 km · Uruma 7.0 km · Ginowan 9.0 km · Yomitan 9.0 km · Nakagusuku 10 km

Japan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
100 V · 50 / 60 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$35,951
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.2
per 100k, 2023
Road deaths
3.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 446
Religion
Shintoism 49%Buddhism 46%other 4%Christianity 1%

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 Okinawa (26.3358°, 127.8014°, elevation 112 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).