Although Flossie passed just north of Hawaii four days ago, the state is still feeling the effects of the storm.
“It’s blocking the trades and brings a sheath of moisture afterward,” said National Weather Service lead forecaster Jeff Powell.
The forecast for the next few days is more of the same hot, muggy weather for Kauai and Oahu, but Maui County and Hawaii island should be dry with light to moderate tradewinds.
“It’s going to feel warmer when the winds aren’t blowing and the humidity’s higher,” Powell said.
Honolulu is expected to reach a high of 89 degrees and up to 70% humidity at the airport today. The heat index — what it feels like when temperature and humidity are calculated — will climb to 94 degrees.
On Friday, it’ll get up to 89 degrees with 71% humidity — a heat index as high as 95 degrees in Honolulu.
Wednesday reached a high of 89 degrees and humidity of 70%. The heat index was 94 degrees.
Since the start of August, temperatures have either tied or beaten previous records every day except for Monday. On Tuesday, a record high of 90 degrees was set at Lihue, surpassing the old record of 88 set in 2017.
A surface trough over Kauai will keep the mugginess over the islands as it lingers nearby before drifting westward.
A few bouts of heavy showers are expected to develop due to light winds, forecasters said, especially in the afternoon and evening. By the weekend, light to moderate tradewinds are forecast statewide with just a few showers predicted.
The bad news is the tradewinds will remain light and bring only a little relief from the heat, the weather service said.
In addition to the heat and humidity on Oahu, a flash flood advisory was issued Wednesday for Ahuimanu, Hauula, Kailua, Kaneohe, Maunawili, Mililani, Punaluu, Wahiawa, Waialua, Waikane, Waimanalo and Wheeler Field. The advisory was canceled at 5:45 p.m.
Heavy rain falling at a rate of 1 to 2 inches per hour was reported near the Koolau mountains at around 2:50 p.m. Wednesday, the National Weather Service said.
Nina Wu contributed to this report.