Yakushima weather in June

In June, Yakushima sees average daytime highs of 25°C and overnight lows near 23°C, with 438 mm of rain across 19.6 wet days and about 13.9 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 12% of the time in June, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of June to 13 h 54 min by month's end. Set against the rest of the year, June is Yakushima's 12th-clearest and 9th-windiest month. For the whole year in context, see Yakushima's year-round climate.

Daytime high
25°
4th warmest
Overnight low
23°
9th coldest
Rainfall
438 mm
19.6 wet days
Daylight
13 h 54 min
5:19 AM – 7:16 PM
Cloud cover
82%
12th clearest
Wind
24 km/h
9th windiest
Solar energy
4.55 kWh/m²
Travel score
5.1
out of 10

Yakushima is human settlement in Japan.

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 26°C by the end.

A typical June day in Yakushima reaches about 25°C in the afternoon and slips back to 23°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 26°C. Set against its neighbours, June runs about 3°C warmer than May and about 3°C cooler than July.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12322
22322
32422
42422
52422
62422
72422
82422
92422
102423
112423
122423
132523
142523
152523
162523
172523
182524
192524
202524
212524
222624
232624
242624
252624
262625
272625
282625
292625
302625

How June really feels in Yakushima

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

June sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Yakushima weather by month

How June compares with the rest of the year at a glance. June is the 4th-warmest and 1st-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 June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in June, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 8% of June, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12674
22674
32575
42377
52377
62278
72278
82179
92080
102080
112080
121981
131783
141783
151783
161684
171684
181684
191684
201684
211783
221783
231882
241981
251981
262080
272179
282179
292278
302377

Chance of precipitation in June

Any precipitation

Yakushima gets around 438 mm of rain over 19.6 wet days in June, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 63% and peaks near 71% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
151
252
353
454
556
657
758
860
961
1062
1163
1265
1366
1467
1568
1669
1770
1871
1971
2071
2171
2270
2369
2468
2567
2666
2764
2863
2961
3059

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the oppressive band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 85% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1183340180
2173141190
3063042211
4052842231
5052743241
6042543261
7032443282
8022243302
9022142323
10011942344
11011841365
12011639386
13001538407
14001336419
150012344311
160011324413
17009304516
18008284518
19007264621
20006244524
21005224528
22004204432
23004184335
24003174139
25002154043
26002133847
27002123650
28001103455
2900193357
3000183160

Wind in June

Winds average 24 km/h in June.

Across June, daily wind ranges from about 23 km/h on the calmest days to 24 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
123breezy
223breezy
323breezy
423breezy
523breezy
623breezy
724breezy
824breezy
924breezy
1024breezy
1124breezy
1224breezy
1324breezy
1424breezy
1524breezy
1624breezy
1724breezy
1824breezy
1924breezy
2024breezy
2124breezy
2224breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2924breezy
3024breezy

Sunrise & sunset in June

DaylightNight

Daylight runs from about 13 h 48 min at the start of June to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over June. Sunrise moves from 5:21 AM to 5:22 AM, and sunset from 7:09 PM to 7:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:217:09
213.85:207:10
313.85:207:10
413.95:207:11
513.95:207:11
613.95:197:12
713.95:197:12
813.95:197:13
913.95:197:13
1013.95:197:14
1113.95:197:14
1213.95:197:15
1313.95:197:15
1413.95:197:15
1513.95:197:16
1613.95:197:16
1714.05:197:16
1814.05:197:17
1914.05:197:17
2014.05:207:17
2114.05:207:18
2214.05:207:18
2314.05:207:18
2414.05:207:18
2514.05:217:18
2614.05:217:19
2714.05:217:19
2814.05:227:19
2913.95:227:19
3013.95:227:19

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.55 kWh/m².

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 — June's 4.55 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.7Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.6Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.6Bright
234.6Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.9Bright
295.0Bright
305.1Bright
Planning a trip in June

Hazard calendar for Yakushima

In seasonPeak

In June, 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 June a good time to visit Yakushima?

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

5.1
Sightseeing
8th-best month of the year
4.6
Beach & pool
5th-best month of the year

June is a reasonable time to visit Yakushima for sightseeing.

What to pack for Yakushima in June

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

In June, Yakushima sees daytime highs around 25°C and nights near 23°C. Pack rain gear. Worth having: light clothes, sun protection and a windbreaker. About 20 days see rain.

rain gearlight clothessun protectiona windbreaker

Sea temperature near Yakushima in June

The nearest coast averages about 25°C in June — 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 June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June 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
June 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).