When to Go
The North Coast is a year-round destination, though when you go determines what you will see. The migration of the Pacific gray whales is a wintertime phenomenon, which lasts roughly from mid-December to early April. Wildflowers follow the winter rain, as early as January in southern areas through June and July farther north. Summer is the high season for tourists, but spring, fall, and even winter are arguably better times to visit. The pace is slower, towns are quieter, and lodging is cheaper.
The coastal climate is similar to San Francisco's, although winter nights are colder than in the city. In July and August thick fog can drop temperatures to the high 50s, but fear not. You need only drive inland a few miles to find temperatures that are often 20 degrees higher.