Fog and mist draped Honolulu early Saturday, April 11, 2026, trimming visibility to roughly six miles and kicking off a muggy, overcast weekend. Scattered showers will keep skies mostly cloudy and humidity high, with afternoon highs near 82°F and overnight lows holding in the mid‑70s. A Flood Watch remains in effect through Monday afternoon, April 13, 2026, after recent heavy rains left soils saturated and streams running high.
What The Watch Means
According to the National Weather Service, the Flood Watch covers all Hawaiian islands through 6 p.m. HST Monday. Forecasters cautioned that “given saturated soils and elevated stream levels following recent heavy rainfall, flooding may redevelop quickly.” Residents in low‑lying neighborhoods and along drainage channels should be prepared for rapid water rises and potential closures.
What To Expect
Scattered, mostly light showers are likely through Saturday, with a stronger push of tropical moisture expected late Saturday night into Sunday and lingering into Monday. Forecast segments show limited rainfall amounts to start, but localized downpours and thunderstorms Sunday into Sunday night could deliver the heaviest totals, with pockets of one to a few inches possible where storms repeatedly pass over the same spot. Those intense bursts can trigger quick urban and stream flooding even if overall rainfall totals look modest.
Where The Risk Is Highest
Maui and the Big Island have already taken the lead in heavier bands and will likely stay vulnerable as the moisture axis shifts, while Oʻahu and Kauaʻi, which were briefly drier earlier, are expected to slip back into a wetter pattern late tonight into Sunday. Steep, river‑cut slopes and low‑lying urban areas with poor drainage remain the biggest concerns for flash floods and localized landslides. Light winds could let heavier showers park over the same neighborhoods for longer, ramping up local runoff.
Commute And Safety Tips
Plan extra time for driving on slick roads and never attempt to drive through standing water: Turn Around, Don’t Drown. If you live near streams or known flood zones, move valuables to higher ground and make a family plan in case water rises quickly; call 9‑1‑1 only for life‑threatening emergencies. Keep phones charged, avoid unnecessary travel during heavy downpours, and monitor official county alerts along with the National Weather Service for any upgrades to Flash Flood Warnings.
Bottom line: expect a soggy stretch from late Saturday into Monday, with pockets of flash flooding possible in saturated, low‑lying areas. This forecast will be updated as watches or warnings change.
