The best time to visit Los Angeles is from March through May and then again between September and November. These months offer pleasant temperatures and better air quality, along with much lesser crowds. The clear skies are perfect for sightseeing activities and visiting all outdoor attractions. The sweltering temperatures of summer coupled with thick smog tend to drive away visitors during this season. Surprisingly, Los Angeles receives the maximum tourists during the summer. The winter months of December and February experience frequent rainfall and the period from January to April is the least busy for this Southern California city.