Almost all of the rain in the Los Angeles area occurs in winter. Summer temperatures in the months of June, July and August have average highs in the mid 80's, though temperatures tend to drop by about 20 degrees Fahrenheit at night. The sun shines in Los Angeles about 329 days out of the year, which speaks volumes as to the sort of weather conditions to expect. One might predict a variety of climates with such a diverse geography, but the constant warm, moist Pacific air is the moderating factor.
Average high winter temperatures in Los Angeles reach into the high 60's and mid 70's, while nighttime lows drop about 20 degrees below that. Although winter is the rainy season, relatively speaking, it is also the clear season, absent of smog, and offers the kind of spectacular distance views not often seen in summer. In addition, although the average high seems to be warm and inviting, the thermometer won't hang around that temperature for long -- perhaps only a few minutes in mid-afternoon, before it starts dropping.
Los Angeles weather is influenced by the Santa Ana Winds. This condition typically occurs in late summer and involves hot winds blowing down from the mountains westward toward the coast. Not only do these sustained winds trap a heavy layer of smog over the city, but they also bring a heightened fire danger, reports the University of California at San Diego (UCSD). While the beaches are normally cool at night, the presence of the Santa Winds make it downright warm.
The classic Mediterranean climate in Los Angeles is a result of the of its latitude and its proximity to mountains and the ocean. Characterized by warm, dry days, and the constant moderating influence of the ocean breezes, it is rarely hot in the city. The few rainy days spawned in winter normally dissipate quickly and the sun returns. The perpetual presence of the sun is one reason California's state motto is The Golden State.
