Yakushima weather in July

In July, Yakushima sees average daytime highs of 27°C and overnight lows near 26°C, with 173 mm of rain across 12.6 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 6th-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 30% of the time in July, and the air most often feels miserable.

Daylight stretches from about 13 h 54 min at the start of July to 13 h 30 min by month's end. Set against the rest of the year, July is Yakushima's 5th-clearest and 12th-windiest month. For the whole year in context, see Yakushima's year-round climate.

Daytime high
27°
2nd warmest
Overnight low
26°
11th coldest
Rainfall
173 mm
12.6 wet days
Daylight
13 h 48 min
5:29 AM – 7:17 PM
Cloud cover
63%
5th clearest
Wind
22 km/h
12th windiest
Solar energy
5.86 kWh/m²
Travel score
5.9
out of 10

Yakushima is human settlement in Japan.

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical July day in Yakushima reaches about 27°C in the afternoon and slips back to 26°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, July runs about 3°C warmer than June and on par with August.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12625
22725
32725
42725
52726
62726
72726
82726
92726
102726
112726
122726
132726
142726
152826
162826
172826
182826
192826
202826
212827
222827
232827
242827
252827
262827
272827
282827
292827
302827
312827

How July really feels in Yakushima

Once humidity and wind are folded in, July averages 15 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
15
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Yakushima weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan14° / 12°12213.110.33.8
Feb15° / 12°12612.710.94.0
Mar17° / 14°18214.611.84.8
Apr19° / 17°19012.712.75.7
May22° / 20°21012.913.56.1
Jun25° / 23°43819.613.95.1
Jul27° / 26°17312.613.85.9
Aug28° / 27°14114.713.15.4
Sep27° / 25°23715.812.25.7
Oct24° / 22°1701311.36.5
Nov20° / 18°1491210.56.1
Dec16° / 14°11411.810.14.9

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 10% of July, with mostly cloudy or overcast conditions the remaining 60%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22674
32773
42773
52971
62971
73169
83268
93268
103466
113565
123763
133763
143961
154060
164060
174258
184357
194456
204654
214753
224753
234852
244951
255050
265149
275248
285347
295347
305347
315446

Chance of precipitation in July

Any precipitation

Yakushima gets around 173 mm of rain over 12.6 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 43% and peaks near 57% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
157
256
354
452
550
648
747
846
945
1044
1143
1242
1342
1441
1541
1640
1739
1839
1939
2038
2138
2238
2338
2438
2538
2638
2738
2838
2938
3039
3139

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the miserable band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1173062
2162865
3162766
4152668
5042571
6042472
7042472
8032374
9032374
10022375
11022375
12022375
13022375
14012376
15012277
16012277
17012277
18012277
19012277
20012277
21012178
22012178
23002179
24002179
25002179
26002080
27002080
28001981
29001981
30001882
31001882

Wind in July

Winds average 22 km/h in July, the calmest month.

Across July, 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
124breezy
224breezy
324breezy
424breezy
524breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1123breezy
1223breezy
1322breezy
1422breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 h 54 min at the start of July to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over July. Sunrise moves from 5:23 AM to 5:38 AM, and sunset from 7:19 PM to 7:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:237:19
213.95:237:19
313.95:237:19
413.95:247:19
513.95:247:19
613.95:257:19
713.95:257:19
813.95:257:19
913.95:267:18
1013.95:267:18
1113.95:277:18
1213.85:277:18
1313.85:287:17
1413.85:287:17
1513.85:297:17
1613.85:297:17
1713.85:307:16
1813.85:317:16
1913.75:317:15
2013.75:327:15
2113.75:327:15
2213.75:337:14
2313.75:337:14
2413.75:347:13
2513.65:357:13
2613.65:357:12
2713.65:367:11
2813.65:367:11
2913.55:377:10
3013.55:387:09
3113.55:387:09

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.86 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 5.86 kWh/m² in July across the year — July's 5.86 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.3Bright
45.4Bright
55.4Bright
65.5Bright
75.6Bright
85.6Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
186.0Bright
196.0Bright
206.0Bright
216.0Bright
226.0Intense
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.0Bright
286.0Bright
296.0Bright
306.0Bright
316.0Bright
Planning a trip in July

Hazard calendar for Yakushima

In seasonPeak

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

Yakushima 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 July a good time to visit Yakushima?

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

5.9
Sightseeing
4th-best month of the year
6.1
Beach & pool
2nd-best month of the year

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

What to pack for Yakushima in July

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

In July, Yakushima sees daytime highs around 27°C and nights near 26°C. Pack light clothes. Worth having: rain gear, sun protection and a windbreaker. About 13 days see rain.

light clothesrain gearsun protectiona windbreaker

Sea temperature near Yakushima in July

The nearest coast averages about 28°C in July — 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 20°C.

It's comfortable for a long swim from Feb 25 to Feb 7 — about 11.4 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb20Cool
Mar20Refreshing
Apr21Refreshing
May23Refreshing
Jun25Warm
Jul28Warm
Aug29Tropical
Sep28Warm
Oct26Warm
Nov24Warm
Dec22Refreshing

UV index in Yakushima in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Yakushima peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 22UV 11Jan 10UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7Very high
Apr9Very high
May9Very high
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep10Extreme
Oct7High
Nov5High
Dec4Moderate

Air quality in Yakushima in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Yakushima is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1420 µg/m³Jul 2010 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr21Moderate
May19Moderate
Jun13Moderate
Jul10Good
Aug11Good
Sep10Good
Oct10Good
Nov11Good
Dec10Good
Location & terrain

Where is Yakushima?

Yakushima sits at 30.4°N, 130.6°E, 0 m above sea level, in Japan. The nearest listed city is Nishinoomote, 51 km away.

Topography around Yakushima

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

Within 3 km, the terrain around Yakushima has large variations in elevation — a maximum elevation change of 608 m around an average of 81 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,916 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,893 m.

The land around Yakushima is covered by trees (54%) and water (44%) within 3 km, water (67%) and trees (33%) within 16 km, and water (93%) within 80 km.

3 km
608 m
16 km
1,916 m
80 km
1,893 m
treesgrasslandartificial surfaceswater
July weather nearby: Nishinoomote 51 km · Ibusuki 94 km · Makurazaki 103 km · Minamikyushu 108 km · Kanoya 112 km · Minamisatsuma 117 km · Kaseda-shirakame 119 km · Tarumizu 122 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 Yakushima (30.388°, 130.6492°, elevation 0 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).