Ishigaki weather in May
May in Ishigaki: warm, soaked, with very humid — fine if you can take 15 rainy days.
#4 of 12 months in Ishigaki · #646 of 897 destinations to visit in May · comfort 75/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
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Ishigaki climate normals — May
| Daytime high | 27°C / 80°F | 🌤 warm |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Rainfall | 211 mm / 8.3 in | ⛈ soaked |
| Rainy days | 15 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 22°C / 71°F | |
| Sunshine | 9.4 h/day | |
| Daylight | 13.3 h | |
| Wind | 29 km/h / 18 mph | |
| Air quality (US AQI) | 54 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Ishigaki in May — FAQ
- Is May a good time to visit Ishigaki?
- May in Ishigaki: warm, soaked, with very humid — fine if you can take 15 rainy days. It ranks #4 of 12 months for Ishigaki on SeasonMap's comfort score (75/100).
- What is the weather like in Ishigaki in May?
- In May, Ishigaki averages a daily high of 26.7°C and a low of 24.8°C, with about 210.6 mm of rain over roughly 14.8 rainy days.
- What is the air quality in Ishigaki in May?
- Ishigaki has a mean US Air Quality Index of about 54 in May.