May in Miyakojima averages a daily high of 27.7°C. Expect roughly 12.2 wet days totalling 247.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Miyakojima is October–May.
Based on MIYAKO, JA (1.8km), 1995–2024. 19 years of May data.