Hot Mediterranean is California's biggest climate at 24.7%, and with warm Mediterranean the dry-summer coast pattern covers 46% of the state. But 42% is arid: desert and steppe, nearly a fifth hot desert.
Köppen-Geiger, Beck et al. 2023

Hot Mediterranean is California's biggest climate at 24.7%, and with warm Mediterranean the dry-summer coast pattern covers 46% of the state. But 42% is arid: desert and steppe, nearly a fifth hot desert.
Köppen-Geiger, Beck et al. 2023