Ishigaki's weather is characterized by a warm and subtropical climate. Winters are mild, with temperatures ranging from 10-25°C in January, gradually warming up to average highs of around 22-23°C by March and April. The summer months, May to September, bring the hottest temperatures, often reaching 30-34°C, but with a relatively small diurnal range. Autumn is similarly warm, with October's highs dipping back down into the mid-20s, while spring and winter are slightly cooler. Overall, Ishigaki enjoys pleasant temperatures year-round, without extreme variations.