Honolulu started Saturday, April 18, on the sticky side, with warm, muggy air in the mid‑70s and a forecast high near 84°F. East‑northeast trade winds are set to keep things breezy while steering spotty, brief showers into windward and mauka neighborhoods. Leeward spots should hang on to partly sunny skies, though inland valleys might catch a few heavier downpours this afternoon.
Afternoon Winds and Spotty Showers
Through Saturday afternoon, winds are expected to run about 8–17 mph from the east‑northeast, with gusts up to 24 mph and rain chances hovering near 20–30 percent. Isolated showers could briefly turn heavy over mountain slopes and interior Big Island areas, while coastal zones are more likely to see quick, passing sprinkles. This forecast comes from the National Weather Service office in Honolulu; see NWS Honolulu for the full forecast and the latest updates.
Marine and Surf Outlook
A Small Craft Advisory is posted through 6 p.m. HST Saturday for Maalaea Bay, the Pailolo and Alenuihaha channels, and several Big Island coastal waters, so small‑boat operators should plan on a bumpy ride and use extra caution. A modest bump in north‑facing surf is expected today, with larger northwest and northeast swells on the table for early next week. Check harbor notices before casting off, and keep those life jackets on when conditions turn choppy.
Looking Ahead
Trade winds are forecast to ease up and veer southeasterly late Sunday into Monday, which bumps up the odds for scattered or isolated heavy showers early next week. Monday, April 20, currently carries about a 50 percent chance of showers in the outlook. Soils in some neighborhoods are still recovering from earlier April downpours; for recent background on that wet stretch, see how Honolulu woke up swamped in mid‑April. Forecasters will be keeping an eye on any ramp‑up in shower intensity and timing.
Quick Tips
Tie down or bring in loose patio furniture and be ready for gusty crosswinds on exposed roads this afternoon. Boaters and beachgoers should grab the latest updates before heading out, and swimmers would be wise to steer clear of choppy, wind‑blown water along east‑facing beaches.
