Honolulu rolled into Sunday, May 17, 2026, under muggy, partly cloudy skies, with pre-dawn temperatures in the mid-70s and the kind of humidity that hits you the second you step outside. East-northeast trade winds will help a bit, nudging afternoon highs toward 85°F and keeping a few isolated showers in the mix, mainly over windward spots.
What To Expect Today
Scattered, mostly light showers are on tap through the day, focused over windward and mauka slopes, with an afternoon high near 85°F and an overnight low around 75°F. East-northeast winds should run a steady 12 to 17 mph, with gusts pushing up to about 24 mph this afternoon. Most neighborhoods will see little to no rain accumulation, although briefly heavy downpours could bubble up over heated leeward slopes.
Coastal Flooding And Tides
A Coastal Flood Statement remains in effect through Monday afternoon, May 18, 2026, calling for isolated minor coastal flooding and saltwater overwash during the daily high tides in the late afternoon. Tides are expected to peak around 2.5 to 3.0 ft MLLW today, which is just enough to send water up onto normally dry beaches and some low-lying coastal roads in exposed areas. The National Weather Service in Honolulu is urging people to avoid driving through flooded roadways, move vehicles and valuables to higher ground, and hose off cars after any saltwater exposure - see the full advisory at NWS Honolulu.
Winds And Marine Outlook
Out on the water, moderate to fresh trades will keep east-facing shores choppy, and a mix of small to medium swells will leave some harbor areas bumpy at times. Trades are expected to crank up late Tuesday into Wednesday, with sustained easterlies in the low 20 mph range and stronger gusts that could reach into the 30s along ridgelines and exposed coasts. If recent heavy rain led to flash flooding or stranded drivers over the weekend, keep an eye on local reports and advisories; for background coverage see Hawaii News Now.
Plan Ahead
A light windbreaker or compact umbrella would not be a bad call, especially if your plans take you over windward roads. Give yourself a bit of extra time for those commutes, steer clear of low-lying coastal routes during late-afternoon high tides, and check the latest updates from local emergency channels before heading for the shoreline.
