Your midday Hawaii weather update A band of showers is moving across the islands today, starting over Oahu this morning and expanding eastward to Maui County and the Big Island as the day progresses. Right now at nine-thirty, we're seeing active showers over Oahu with temperatures around seventy-two degrees. As we head toward eleven o'clock, rainfall chances peak at nearly sixty percent, so expect the heaviest downpours late morning through early afternoon.