Ishigakijima Local Meteorological Observatory, Meteorological observatory in Ishigaki, Japan.

The Ishigakijima Local Meteorological Observatory is a weather monitoring facility on Ishigaki Island equipped with instruments that measure temperature, humidity, wind speed, and rainfall continuously. The station collects and analyzes this data to provide weather information and forecasts to the local community and maritime users.

The facility was established on December 5, 1896, making it one of Japan's long-standing meteorological stations. Over 125 years of continuous observations have documented climate patterns and weather changes across the region.

The observatory's phenological records track Yaeyama species: the first calls of the Iwasaki grass cicada and Ryukyu bear cicada, the first southward sighting of the grey-faced buzzard, and the flowering of hikanzakura, deigo and Ryukyu violet. The WMO certified it a Centennial Observing Station in May 2017, the first in Japan, and a plaque was installed on 5 December 2018.

The observatory sits at 24.33694 N, 124.16456 E in Ishigaki, and its upper-air, radar and radiation work is not open to casual visitors; the WMO centennial plaque installed on 5 December 2018 can be seen at the site. For trip timing, note that the station also runs the radar station on Mount Omoto, the island's highest peak.

In May 2017 the site became Japan's first station certified by the WMO as a Centennial Observing Station, recognised for more than a century of observations at the same spot; a certification plate was installed on 5 December 2018. Observations have continued at this location since 1897.