January in Baja California offers a diverse range of climatic conditions. Northern Baja, including Tijuana and Rosarito, experiences cool, sometimes rainy weather with average high temperatures in the mid-60s Fahrenheit (around 18C) and lows in the 40s Fahrenheit (around 5C). The central desert region, including Catavia and San Ignacio, can be quite cold, particularly at night, with daytime highs in the 60s Fahrenheit and nighttime lows dipping into the 30s Fahrenheit (around 0C). Southern Baja, encompassing Los Cabos and La Paz, enjoys warmer, drier conditions, with average highs in the 70s Fahrenheit (low 20sC) and lows in the 50s Fahrenheit (around 10C). The Sea of Cortez side generally remains a few degrees warmer than the Pacific side.
Understanding Baja California’s January climate is crucial for planning activities. Travelers should pack layers to accommodate fluctuating temperatures and be prepared for potential rain in the north. This period represents the peak season in some areas, particularly the south, as visitors seek refuge from colder climates further north. The pleasant weather in the south makes it ideal for outdoor activities like swimming, snorkeling, and whale watching, which is a popular attraction during this time. Historically, January has been a period of relatively lower rainfall for much of the peninsula, though variations do occur.