Honolulu gets one more mostly mellow day on Sunday, April 5, 2026, with plenty of clouds, mild temps near 80°F, and a steady east-northeast breeze gusting into the upper teens. Trade winds will steer most stray showers toward windward and mauka slopes, leaving downtown and leeward neighborhoods largely dry through the afternoon. The National Weather Service has a Hydrologic Outlook in place, flagging a much wetter setup expected to kick in starting Tuesday, April 7, 2026.
Afternoon Winds Pick Up
East-northeast winds should run about 8-14 mph this afternoon, with stronger gusts near the water and over higher terrain, where brief bursts into the upper teens are possible. That breeze will kick up choppy conditions on exposed beaches and may slow coastal drives a bit, so it is not a bad day to secure loose patio furniture and budget extra time on wind-exposed routes. Small-craft operators and paddlers should treat open water with extra caution.
When The Heavier Rain Starts
Isolated showers may sneak in Monday night into early Tuesday, April 7, 2026, and rain chances climb on Tuesday as a moist southerly flow noses north. Scattered showers are likely Tuesday, with a more organized stretch of occasional heavy showers and thunderstorms expected from Wednesday, April 8, into Thursday, April 9. The best odds for steady, widespread rain line up from Wednesday night through Thursday night. That timing is in line with the pattern highlighted in midweek soaker coverage from earlier this week.
Flooding Risk And Preparedness
The National Weather Service notes that this pattern could deliver moderate to heavy rainfall from late Tuesday, April 7, continuing into the weekend and raising the risk of rapid runoff and renewed flash-flood trouble. To get ahead of it, clear gutters and storm drains, move valuables out of basements or other low-lying spaces, and check any pumps or generators. Officials say these are standard preparation steps, according to the National Weather Service. Anyone living near streams, gulches, or familiar flood-prone spots should be ready to head for higher ground if the heavy rain materializes.
Surf, Boating And Events
Overlapping north and south swells will give both sets of shorelines a boost late Tuesday into Wednesday, while strengthening southerly winds later in the week will keep seas on the choppy side. Outdoor events planned from Wednesday into the weekend should have a solid backup plan, and organizers and boaters will want to monitor forecasts closely and allow extra time for travel or any last-minute rescheduling. If heavier downpours roll through, avoid driving through standing water and follow any road closures that go up.
Forecast details will be updated as agencies post new watches or warnings, so keep phones charged and follow instructions from local officials if shelter or evacuation notices are issued. For the most current briefings, check the National Weather Service along with local emergency information pages.
