Moderate to breezy trades will continue through at least the middle of next week. Showers will generally favor windward and mauka areas, particularly during the overnight through early morning hours each day. Tropical Storm Lowell remains far ESE of the main Hawaiian Islands, and uncertainty regarding its track and intensity forecast is high at this time.
Issued at 415 AM HST Sun Aug 30 2026 Conditions will be mostly VFR. Trades will continue at breezy speeds, creating occasional turbulence downstream of mountains. In addition, showers will focus on windward sites, but should remain isolated. Low ceilings may occur briefly, but limited moisture should prevent sites from getting bogged down in long- lasting MVFR.
AIRMET Tango is in effect for mod low-level turbulence lee of terrain and may be needed for a few days.
A strong surface high will remain nearly stationary far north of the Hawaiian Islands this week. Moderate to locally strong trade winds will prevail through the week. Tropical Cyclone Lowell may move into the Hawaiian Offshore Waters from Wednesday into Thursday. Wind and weather impacts and timing for the coastal waters will be driven by the speed and track of Lowell as it moves towards the region.
The current south swell will slowly decrease over the next several days. Overlapping small, long- and medium-period south swell energy will keep small surf along south facing shores through the week. The next good boost in south swell energy will arrive and fill in from Tuesday to Wednesday at around 2 to 3 feet with an 18 second period. This swell will peak on Wednesday, just below south shore advisory thresholds, and then slowly decline through the end of the week. Trade wind swell energy will continue to keep elevated surf heights along all east facing shores this week.
Small Craft Advisory until 6 PM HST this evening for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Big Island Windward Waters-Kaiwi Channel-Kauai Channel-Kauai Leeward Waters-Kauai Northwest Waters-Kauai Windward Waters- Maalaea Bay-Maui County Leeward Waters-Maui County Windward Waters-Oahu Leeward Waters-Oahu Windward Waters-Pailolo Channel.
