Weather will likely play an important role when you plan your trip to Los Angeles, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and April, with an average temperature of 26°C, while the coldest months are January and December, with an average of 25°C. The rainiest months in Los Angeles are October, November, August and July, with each month seeing an average of 628 mm of rainfall.