Honolulu's weather remains under the firm grip of a high-pressure system, as islanders continue to experience the usual dry summer pattern, characterized by tradewinds and occasional showers. Forecasters at the National Weather Service in Honolulu expect this trend to persist over the next several days, with increased cloud coverage and showers likely to remain focused on windward and mountainous regions. Although leeward slopes may see some cloud build-up in the afternoon, widespread rain isn't expected until early next week with the arrival of an upper level disturbance northeast of the state.
While the atmospheric conditions have been stable due to dry mid to upper level air and relatively low inversion heights, the stage is set for change. Early next week could see a shake-up as "the development of an upper level disturbance forming in the middle of northern ridging will be the impetus of gradually weakening trades," according to National Weather Service Honolulu. Lower surface pressures, combined with the subtropical jet's position, may enhance rainfall across the islands, with uncertainty hinging on moisture levels and the disturbance's exact trajectory.
For aviators, the breezy to locally windy conditions will continue, with most areas remaining VFR (Visual Flight Rules). However, National Weather Service Honolulu has issued an AIRMET Sierra for mountain obscuration for various regions and an AIRMET Tango for moderate low-level turbulence lee of island terrain that will remain in effect for the foreseeable future. For mariners, a Small Craft Advisory has been extended through early Sunday morning as strong trade winds persist.
