Not sure there is a real BEST time to shoot that is universal...right AT the beach and for 1/4 mile inland the sunrise light and early morning light is fairly dim, due to the Pacific Coast Range mountains, which begin, well...as close as 1/4 mile from the actual ocean water,or less, in many places. So "sun rise" over the Coast Range peaks is wayyyyyy late in the day; if you're along the Interstate 5 corridor, in any of the various valleys from Washington thru California, the earlier AM hours are pretty wonderful in terms of warm, early light that has nice direction to it.
Also, in the winter, the sun is pretty low in the sky, and the sunlight is not exceptionally strong in southern Oregon or northern California. Again...depends somewhat on the actual locale; right here, in this area, we're in the shadow of large hills and the sun left the sky right here at 3:15 PM today...everything goes to blue-tinged, open shade, even though nightfall is still hours away--we're in a massive "shadow zone" in this town! I have spent the last 19 years living in an area where "sun-down" is wayyyyy in front of twilight! But driving westward between 5 and 100 miles makes makes the day multiple hours longer, by getting me out of the shadow of the close hills which are about 500 feet higher than the surrounding low-lying areas!
One of the bigger problems on the far west coast is large concentrations of marine offshore weather coming in off of the Pacific ocean...there can easily be rain clouds that cut the light down drastically on some days, all afternoon long. On other days, there will be NO offshore marine weather, and the sunset hours can be gorgeous, and golden in color.
The "best time" is the time when the light is the way you'd really like it to be for the subjects you have in mind! And that can change with the weather, as well as the local geographic terrain/location.