In 2025, Hawaiʻi experienced its second–driest year in more than a century, alongside persistently above average temperatures throughout the year—a stark reality detailed in the inaugural Hawaiʻi Annual Climate Report 2025.
In 2025, Hawaiʻi experienced its second–driest year in more than a century, alongside persistently above average temperatures throughout the year—a stark reality detailed in the inaugural Hawaiʻi Annual Climate Report 2025. Published by the University of Hawaiʻi Sea Grant College Program, this first-of-its-kind report uses plain language, along with easy-to-interpret maps and figures, to summarize statewide rainfall, temperature, and drought conditions over the past year.
The report is designed to connect communities, resource managers, and policymakers with the climate data behind what many experienced firsthand, providing essential information to support climate preparedness and long-term planning across the islands.
This report reflects decades of effort to monitor Hawaiʻi’s climate and conduct high-level scientific research, paired with more than eight years of collaboration by a team of climate and data scientists to develop an expanding suite of high-quality climate maps and decision support tools. These maps are hosted on the Hawaiʻi Climate Data Portal (HCDP) and, for the first time, make it possible to summarize climate conditions consistently across the entire state.
“Throughout 2025, we heard people across the state talking about just how hot and dry the year felt,” said Ryan Longman, director of the Hawaiʻi Climate Data Portal. “Now we have the data to show what people were experiencing on the ground. We hope this type of reporting helps connect residents to their own lived experiences with Hawaiʻi’s climate and gives communities the information they need to plan for what’s ahead.”
Read More: University of Hawaii
Photo Credit: KiraSawa via Pixabay
