Honolulu starts the week under partly cloudy skies on Monday, July 20, 2026, with daytime highs near 85°F and overnight lows around 75°F. East-northeast trade winds are back in the picture and expected to stay breezy through much of the week, while isolated afternoon showers may drift across windward and mauka neighborhoods.
Showers And Winds
Isolated rain showers are possible this afternoon, with coverage expected to increase Monday night into Tuesday, July 21, 2026, as a pocket of moisture moves in from the east. Forecast highs sit in the mid 80s and lows in the mid 70s, with east-northeast trade winds around 8 to 14 mph and gusts reaching into the upper teens in more exposed spots. These timing, temperature and wind details are from the National Weather Service.
Surf And The Week Ahead
The trade wind pattern is expected to hold through midweek, though forecasters say shower frequency could tick up Tuesday into Wednesday, July 21 to 22, 2026, before drier air settles back in. The National Weather Service forecast discussion notes that a long-period south swell already in the water will build on Monday and peak from Monday night through early Wednesday (July 20 to 22, 2026), and that “a High Surf Advisory will likely be required.” Forecasters also flag distant Tropical Cyclone Fausto as a possible influence on the trade flow into early next week. If advisory levels are reached, east-facing shores and small boats should be ready for elevated surf and choppy conditions.
Plan For Today
A light rain jacket is a smart bet for quick windward showers, and anything loose in the yard should be secured during the breezier periods. Beachgoers and boaters should check in with local lifeguard and marine updates before heading out. Otherwise, most outdoor errands and events should manage just fine under warm, breezy skies.
