First Alert Forecast: Humid day with Some sunshine, light rainfall

News admin June 20, 2026 0 Comments

First Alert Forecast: Humid day with Some sunshine, light rainfall

HONOLULU (HawaiiNewsNow) – Winds will stay light to moderate with some sunshine. Even though the wind direction changes a bit, it won’t make a huge difference—you’ll still see scattered showers on the windward sides and in the interior sections. In the afternoon, sea breezes will trigger some showers on the leeward sides and inland areas too. Starting early next week, the winds will pick up to moderate or even breezy speeds, and you’ll see more consistent showers on the windward slopes as the trade wind pattern strengthens.

View the latest weather conditions here.

A weather system is parked northwest of the islands, and high pressure is building to the northeast. These features will keep winds light to moderate from the east-southeast today, shifting slightly to the east-northeast by Sunday. You can expect sunshine with some scattered showers over the windward and mauka areas with some afternoon showers inland as sea breezes kick in. It’ll feel humid today with moisture levels in the lower 70s, but you’ll get a break tomorrow when the humidity drops back to the mid-to-upper 60s as trade winds settle into a more typical pattern.

Monday Through Friday

The weather system northwest of the islands will weaken and move west, replaced by high pressure that will tighten up and bring moderate to breezy trade winds. Computer models are showing that a dip in the upper atmosphere (basically cooler air aloft) will move toward the islands by midweek. There’s still some uncertainty about exactly where this will track, but when it gets close, it could boost shower activity as moist air moves through. Bottom line: expect typical trade wind weather with moderate winds and scattered showers.

A new, longer-period south swell is building throughout the day. If you’re heading to south or west-facing beaches, expect the waves to get bigger as the afternoon goes on, peak overnight, and then start to shrink on Sunday. More swells from the south and southeast will roll in through the middle of next week, keeping the surf around what’s normal for this time of year.

On the flip side, north-facing beaches will have tiny waves all week since there’s not much wave energy coming from the north and northwest. East-facing beaches are also below average right now because the trade winds are lighter than usual. However, once trade winds pick back up early next week, the waves on the east shore will start to build.

Download the HNN Weather app from the Apple App Store or Google Play for the latest updates from your First Alert Weather Team: chief meteorologist Jennifer Robbins, meteorologist Drew Davis, and weather anchors Guy Hagi, Ben Gutierrez, and Billy V.