January 2025 California wildfires have been fueled by meteorological conditions strengthened by human-driven climate change

Meteorological conditions similar to that triggering California January 2025 wildfires  are up  5°C warmer, 3 mm/day (up to 15%) drier and up to 5 km/h (up to 20%) windier in the present compared to the past, in the area interested by the fires. 

This event was associated with very rare meteorological conditions 

We ascribe the strengthened winds, higher temperature and drier conditions triggering California January 2025 wildfires to human driven climate change and natural climate variability likely played a minor role.