Honolulu is waking up to classic beach weather this Sunday, June 21, 2026, with mostly clear skies, warm air and highs pushing into the mid 80s. Leeward neighborhoods and downtown can expect plenty of sunshine, while windward slopes are still the best bet for quick, passing showers. Some spots along exposed ridges and near the shoreline could get a little gusty by this afternoon.
Forecast Snapshot
Temperatures are expected to top out near 86°F, with overnight lows holding around 75 to 76°F. East-northeast trade winds should run about 9 to 16 mph, with afternoon gusts slipping into the low 20s. Showers stay mostly isolated today, though forecasters are flagging a shift toward a wetter, breezier pattern by midweek, according to the National Weather Service in Honolulu.
Afternoon Winds Pick Up
High pressure building north of the islands will crank up the trades Monday through midweek, nudging winds into the moderate to breezy range. By later in the week, gusts could push into the mid 20s mph in the usual exposed areas, which will leave many east-facing beaches on the choppy side and keep ridgelines blustery.
Showers Trend Up Midweek
For now, windward and mauka communities remain the most likely to see those fast-moving, hit-and-run showers, and any brief downpours should not last long. By Tuesday and Wednesday, a weak surface trough teaming up with deeper low-level moisture is expected to boost shower coverage. Some forecasts put nighttime rain chances close to 40 to 50 percent, although rainfall totals are still projected to stay on the lighter side. A compact umbrella would not be a bad accessory for the commute on those days.
South Shore Surf Remains Elevated
Several overlapping south swells continue to line up for the islands, keeping south-facing surf elevated into next weekend. That means a higher risk of strong breaking waves and occasional water runup at exposed beaches and boat ramps. Beachgoers and small-craft operators should use extra caution and keep an eye on posted advisories; for a deeper dive, see how big south swell and peak tides threaten to swamp Honolulu's shoreline.
Plan Ahead
It is a good time to tie down loose lanai furniture, secure small boats and build in a cushion for errands if your route runs through windward showers. There are no local watches or warnings in effect right now, but that could change if those midweek showers and stronger trades come together as expected. Before heading for the beach later this week, keep tabs on updated forecasts from the National Weather Service and local emergency channels.
