SeasonMapYakushima (Yakushima National Park) weather in June
Japan
June in Yakushima: nice, soaked, with clean air — a gamble, with 19 rainy days.
#12 of 12 months in Yakushima · #1100 of 1383 destinations to visit in June · comfort 60/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Yakushima in June
Other months in Yakushima
Yakushima's forum flags October as still within typhoon season, which can run through late in the month, and warns that heavy rain — not unusual on this famously wet island — can shut the trails and turn the rivers dangerous. Regulars still rate it among the best hiking months when the weather cooperates, so it's worth building a flexible day or two into the plan.
Add your own note from Yakushima's card on the map.
Yakushima climate normals — June
| Daytime high | 21°C / 69°F | 😎 nice |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Feels like (high) | 21°C / 70°F | |
| Sea temperature | 26°C / 78°F | 😎 warm sea |
| Rainfall | 444 mm / 17.5 in | ⛈ soaked |
| Rainy days | 19 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | 17°C / 62°F | |
| Sunshine | 7.6 h/day | |
| Daylight | 14.1 h | |
| Wind | 33 km/h / 21 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Yakushima in June
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 3 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Yakushima's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherYakushima's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Yakushima in June
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Loggerhead nesting
10 May – 10 Jul · usuallyTurtle nestingBook earlyInakahama at Nagata is the largest loggerhead nesting beach in the North Pacific. The beach is closed at night from May to August and the only way on is a registered tour with no lights. Source ↗
- Nature
Yakushima rhododendron
15 May – 20 Jun · usuallyWildflowers & bloomsThe island's own dwarf rhododendron flowers along the high ridges as the low ground goes into the rainy season. It is a full day's walk above the cloud to see it.
- Season
The wettest weeks
25 May – 10 Jul · usuallyMonsoonRiskYakushima is the wettest inhabited place in Japan and June is the wettest month of its year. The Jomon Sugi trail runs whatever the weather; the river crossings are what close it.
Where is Yakushima?
Yakushima in June — FAQ
- Is June a good time to visit Yakushima?
- June in Yakushima: nice, soaked, with clean air — a gamble, with 19 rainy days. It ranks #12 of 12 months for Yakushima on SeasonMap's comfort score (60/100).
- What is the weather like in Yakushima in June?
- In June, Yakushima averages a daily high of 20.5°C and a low of 18.3°C, with about 443.6 mm of rain over roughly 18.9 rainy days.
- What is the air quality in Yakushima in June?
- Yakushima has a mean US Air Quality Index of about 48 in June.