Hawaiʻi had its second driest year in more than a century in 2025. About half the state experienced some level of drought, and average temperatures were up to a degree higher than normal across the islands.
Those data points come from the Hawaiʻi Climate Data Portal’s first annual report, which offers a comprehensive look at weather and climate conditions in Hawaiʻi in 2025.
Local researchers launched the portal in 2022 with the goal of creating a central hub for Hawaiʻi climate data, said University of Hawaiʻi climate scientist and HCDP Director Ryan Longman…