Tropical Disturbance May Bring Heavy Rain to Hawaii
Tropical Disturbance May Bring Heavy Rain to Hawaii
US · Published Sep 22, 2026
Hawaii County is bracing for potential heavy rainfall later this week as a tropical disturbance or trough is expected to move south of the islands.
Breezy trade winds, which are currently prevailing, are forecast to weaken midweek before strengthening again by the weekend.

Impact & Risks

The eastern parts of Hawaii, particularly the Big Island, could face heavy rainfall and isolated thunderstorms later this week, increasing the risk of localized flooding. Breezy trade winds may cause moderate low-level turbulence, especially downwind of island terrain. Surf conditions along south-facing shores will remain elevated, posing potential risks for beachgoers and small watercraft. A Small Craft Advisory is in place for windy channels and waters around Maui County and the Big Island until Tuesday morning. While fire weather risk remains low, the potential for tropical development adds uncertainty to the forecast (Big Island Now, 2026).

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