SeasonMapYakushima (Yakushima National Park) weather in July
Japan
July in Yakushima: warm, soaked, with clean air — fine if you can take 16 rainy days.
#9 of 12 months in Yakushima · #975 of 1383 destinations to visit in July · comfort 66/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Yakushima in July
Other months in Yakushima
Forum posters describe early April as a genuinely good window for Yakushima - decent weather and crowds that haven't yet peaked, making it a favored time for hiking the island's famous ancient cedar forests. Posters are consistent in flagging Yakushima's reputation as one of the wettest places in Japan, with rain a real possibility on any given day regardless of season - some posters even joke it rains '35 days a month' - though the island's south tends to run noticeably drier than its wetter north, center and east. Posters recommend packing for both scenarios: warmer layers and a hooded rain jacket for higher-elevation hiking, plus lighter clothes for the milder coastal towns, with water still a bit cool for snorkeling this early in spring.
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 — July
| Daytime high | 23°C / 74°F | 🌤 warm |
|---|---|---|
| Nighttime low | 21°C / 70°F | |
| Feels like (high) | 25°C / 77°F | |
| Sea temperature | 28°C / 83°F | ♨️ bath-warm |
| Rainfall | 245 mm / 9.6 in | ⛈ soaked |
| Rainy days | 16 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 19°C / 67°F | |
| Sunshine | 10.3 h/day | |
| Daylight | 13.9 h | |
| Wind | 31 km/h / 19 mph | |
| Air quality (US AQI) | 29 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Yakushima in July
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.
BusySummer break (natsuyasumi) in Japan, school holidays in 4 of the markets that fill it(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 July
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 ↗
- 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.
- Hazard
Typhoon season
15 Jul – 15 Oct · usuallyClosuresThe ferry and the hydrofoil from Kagoshima stop a day before a storm and do not restart for a day after. Budget a spare day either end of a trip in this window. Source ↗
Where is Yakushima?
Yakushima in July — FAQ
- Is July a good time to visit Yakushima?
- July in Yakushima: warm, soaked, with clean air — fine if you can take 16 rainy days. It ranks #9 of 12 months for Yakushima on SeasonMap's comfort score (66/100).
- What is the weather like in Yakushima in July?
- In July, Yakushima averages a daily high of 23.1°C and a low of 21.2°C, with about 245 mm of rain over roughly 16.4 rainy days.
- What is the air quality in Yakushima in July?
- Yakushima has a mean US Air Quality Index of about 29 in July.