There are no beaches in Arizona. It s a desert.Sacramento is about 90 miles inland. It isn t near a beach either.
Well, this time of year any of the beaches in California are going to be kind of cold. From Sacramento it really depends on what type of beach you are looking for. The closest are probably in San Francisco (China Beach, Baker Beach, etc). But those can be crowded and feel urban. For huge sandy beaches with surfers and such, you re going to have head down to Monterey Bay to the beaches at Santa Cruz, Capitola, or Pajaro Dunes. From Sacramento all of the above are a good 2+ hours away and all are very cold right now.No beaches in Arizona, except maybe for a man made one at Lake Havasu.
Beaches are generally next to the sea.