weather in cabo december
cabo in december It's always sunny in Cabo... warm days and cool nights end of Dec, bring some warm clothes and a jacket or windbreaker for at night and for the whale watch, it can get pretty cold out on the ocean! Cabo San Lucas Weather Live Webcams | Current Weather + Forecasts | Weather by months | Hurricane Info. 1  CSL's weather is similar to Palm Springs CA. 2  Average annual rainfall: 10 inches. 3  Coldest months: December and January (Max/min: 80/65ÂºF)  Storm season: July to 1  October. Average Yearly temperature: 78ÂºF.