Study different climate characteristics of the Baja California Peninsula, from 1957 to 1983, and qualitatively relate climate variability in the Peninsula. In the case of air temperature there is a bigger variability in all the Gulf of California Region, comparing it to the West Coast region and Sierras of San Pedro Martir and Juarez. For precipitation it was found that most of the Peninsula is associated to tropical phenomena and orographic factor. Rain in the Peninsula is directly related with the Austral Index (El Niño Phenomenon); in Northwest and Central regions has presented rainfall during summer and winter.