Breezy trades will continue through Monday, bringing limited showers mainly windward and mauka. An upper level low will help weaken winds and turn them out of the south Wednesday. Chances of showers will increase as moisture increases with the potential for heavy rain across Hawaii.
Moderate trades will continue into Tuesday with isolated showers across windward and mountain areas where short-lived MVFR conditions are possible. Otherwise, VFR conditions will prevail across the state through Monday.
AIRMET Tango continues for moderate turbulence downwind of mountain terrain. No other AIRMETs are in effect.
High pressure north of the Hawaiian Islands will maintain fresh to locally strong trade winds through Monday. The Small Craft Advisory for the windier waters and channels around Maui County and the Big Island remains in effect through Monday afternoon. Thereafter, high pressure to the north weakens and trades will start to diminish. Troughing developing northwest of the islands will likely cause winds to veer out of the southeast around midweek and bring increased shower activity for the latter half of the week.
A new small, long-period south swell will slowly fill in tonight and Monday, with a peak slightly above average Tuesday into Wednesday. Near or slightly below average surf will hold through the rest of the week, maintained by a mix of new, small south swells.
A small, medium-period northwest swell will arrive tonight and peak Monday, producing a small bump in surf through Tuesday. Surf will continue to trend up for north shores as a slightly larger long-period northwest swell peaks Wednesday. Surf may approach moderate levels late in the week as a medium-period northwest swell further increases. Surf along east-facing shores will be elevated and choppy through Monday due to the locally strong trades.
A small, long-period west swell originating from Typhoon Choi-wan is forecast to reach the islands Thursday into the weekend, which may produce moderate surf for west-facing shores of the Big Island.
Small Craft Advisory until 6 PM HST Monday for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Maalaea Bay-Pailolo Channel.
