First Alert Forecast: Large dangerous surf on south facing shorelines

HONOLULU (HawaiiNewsNow) – Trade winds will be light today because a weak pressure system is sitting north of the islands. You’ll see clouds and showers mainly on the windward side early in the morning, with afternoon showers possible on the leeward side and inland areas. Eastern side of the state may see some haze from Kilauea Volcano. By early next week, stronger trade winds will return as the pressure system strengthens.

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View the latest weather conditions here.

A weather system is moving toward the islands from the north, bringing moisture and unstable conditions. This means more showers are coming for the first half of the week. The showers will hit the eastern islands hardest through Monday, then spread to the other islands by Tuesday. Today, lighter winds will let sea breezes develop, so you might see some afternoon showers inland and on the leeward (dry) side.

By Monday, the winds will shift and pick up speed as the pressure system gets stronger. As moisture spreads across the state, expect more showers—especially overnight and early morning from Monday through midweek, particularly on the windward (wet) side. By the second half of the week, normal trade wind conditions will return and things will dry out.

⚠️High Surf Advisory remains in effect until 6:00pm today (Sunday) due to the rough and dangerous surf on South facing shorelines.

🏄A big south swell is hitting today but will dip below advisory levels tonight and Monday before returning to dangerous levels Tuesday through Thursday, possibly peaking near warning levels on Wednesday.

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⚠️Combined with higher-than-normal water levels, expect some wave runup and water crossing onto normally dry beaches during this afternoon’s high tide—water levels will gradually drop through the week.

⚠️Caution also advised for small craft operators near south shore facing harbors because of the high surf; and caution for the possibility of recreational surfers crossing channel entrances heading to surf spots.

North-facing shores will stay small through Monday, then pick up slightly Tuesday through Friday with small north swells before dropping back to nearly flat next weekend. East-facing shores are unusually calm through Tuesday due to weak trade winds, but will start building back up Wednesday and Thursday, returning to normal levels by Friday.

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.

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