SeasonMapMiyakojima (Miyako) weather in August
Japan
August in Miyakojima: sweltering, soaked, with clean air — fine if you can take 17 rainy days.
#7 of 12 months in Miyakojima · #885 of 1383 destinations to visit in August · comfort 72/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Miyakojima in August
No notes yet. Open Miyakojima on the map to add the first one.
Miyakojima climate normals — August
| Daytime high | 32°C / 89°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Feels like (high) | 37°C / 99°F | |
| Sea temperature | 30°C / 86°F | ♨️ bath-warm |
| Rainfall | 232 mm / 9.1 in | ⛈ soaked |
| Rainy days | 17 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 26°C / 79°F | |
| Sunshine | 10.5 h/day | |
| Daylight | 13 h | |
| Wind | 28 km/h / 17 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Miyakojima in August
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 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Miyakojima'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 weatherMiyakojima's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Miyakojima in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Sea warm enough to swim
1 Apr – 15 Nov · usuallyThe water off Yonaha Maehama is comfortable for most of the year. Wind and swell, not temperature, decide whether the boats to the outer reef go out on any given morning.
- Hazard
Typhoon season
1 Jul – 15 Oct · usuallyClosuresMiyako takes direct hits rather than glancing ones. Shutters go down, flights are cancelled a day either side, and the shops close — the single biggest risk to a summer trip here. Source ↗
Where is Miyakojima?
Miyakojima in August — FAQ
- Is August a good time to visit Miyakojima?
- August in Miyakojima: sweltering, soaked, with clean air — fine if you can take 17 rainy days. It ranks #7 of 12 months for Miyakojima on SeasonMap's comfort score (72/100).
- What is the weather like in Miyakojima in August?
- In August, Miyakojima averages a daily high of 31.8°C and a low of 26.5°C, with about 232.2 mm of rain over roughly 17.3 rainy days.
- What is the air quality in Miyakojima in August?
- Miyakojima has a mean US Air Quality Index of about 39 in August.