The Japan Meteorological Agency announced Monday afternoon that the rainy season has officially ended for the Okinawa region [1].
This transition marks the shift toward the summer season for the Okinawa main island and the Sakishima Islands. The timing of the rainy season's end is critical for the region's agricultural cycles, and the start of the peak tourism window.
According to the agency, the end of the rainy season occurred eight days later than the average year [3]. When compared to the previous year, the conclusion of the season was 22 days later [3]. The agency said the announcement follows the northward movement of the seasonal rain front and a continuing trend of clear skies [1].
The region experienced significant precipitation before the shift. In Naha, the recorded rainfall reached 854.0 mm [3]. This volume represents approximately 1.7 times the typical annual average for the period [3].
Weather officials monitored the conditions throughout Monday. While some reports indicated a delay in the announcement during the morning hours, the formal declaration was made later in the afternoon [1], [4].
“The rainy season ended on June 29, arriving eight days later than average.”
The delayed end of the rainy season and the significantly higher-than-average rainfall, nearly 1.7 times the norm, suggest a more volatile wet season for Okinawa in 2026. Such deviations from historical averages often correlate with shifting atmospheric pressure patterns in the Pacific, which can influence the intensity and frequency of subsequent typhoon activity during the summer months.
