But if you're the warmer weather type, the best time to visit Tahoe is during the next five weeks. From the end of August through the first or second week in October, the weather is generally perfect, the crowds are fewer (families with kids and college kids having returned home for school), the lodging prices are better, the restaurants less jammed. The trails have fewer hikers and mountain bikers. All of the main services from boating to golfing to horseback trail riding are still in full swing but with less customers. The beaches are still open and the water is still as comfortable as it ever gets. If you want to ride Squaw's Cable Car or Heavenly's Gondola, you can get a ticket without waiting forever in line.
In short, for a perfect Tahoe experience, think September.
Come on up the mountain!