There is a lot going on in the weather forecast as the second week of December begins.
For starters, at the coast, a high surf advisory will remain in place from noon to 9 p.m. for beaches from northern San Luis Obispo County to northern Santa Barbara County. During this time, breaking waves will range from 10-16 feet. After the advisory expires, a high surf warning will go into effect and last until 9 p.m. Wednesday. For the duration of the warning, it's possible that breaking waves could range from 16-22 feet and local sets could reach 25 feet. National Weather Service is asking people to stay off piers, jetties, and out of the water all together due to the dangerous conditions.
On land, Santa Ana winds are taking over the forecast. A wind advisory will remain in place until 9 a.m. Tuesday for both counties as northeasterly winds is expected to range from 15-25 miles per hour throughout the afternoon and increase to 20-35 miles per hour Monday night. Potential wind gust speeds could even reach 60 mph Monday night. Coupled with this advisory will be a Red Flag Warning as humidity levels are expected to drop to single digits and vegetation remains dry. Under the Red Flag Warning, which will remain in place until Tuesday afternoon, the Central Coast coastal valleys and beaches could experience wind gusts up to 60 mph.
As the northeasterly winds increase, so will daytime highs. Most beaches will range from the upper 60s to mid-70s Monday, but will likely climb to the upper 70s Tuesday. For the coastal valleys, expect temperatures from the mid to upper 70s Monday and upper 70s and 80s by Tuesday. It's a bit different for the deep inland valleys as the Santa Ana winds won't have as much of an influence on temperatures, which means daytime highs will be anywhere from the upper 50s to the upper 70s.