LA weather by area: coast vs. Valley microclimates
On a summer afternoon, Santa Monica and the San Fernando Valley can be 20 degrees apart. How LA's microclimates work, and what they mean when you choose a home.
People move here for the weather, and then they find out there isn't one LA weather. There are several, sometimes within the same 15-minute drive. On a July afternoon it can be a cool, gray 72 at the beach and a dry 95 in the Valley.
That difference shapes daily life more than most people expect: whether you need air conditioning, whether the pool gets used in October, whether the morning starts in sun or fog. It's worth understanding before you pick a neighborhood.
Why it varies so much
Two things do most of the work. The first is the Pacific. Cool ocean water and the marine layer it creates keep the coast mild, cooler in summer and warmer in winter than inland areas. The second is the mountains. The Santa Monica Mountains and the hills around Hollywood and Griffith Park act like walls, and the marine air often can't get over them. The farther inland and the more hills in between, the hotter the summers and the cooler the winter nights.
The National Weather Service office for Los Angeles forecasts by zone for exactly this reason: coastal, inland basin, valleys and mountains often get different forecasts on the same day.
The broad zones
- The coast. Santa Monica, Venice, Pacific Palisades and Malibu. Mild all year. Summer highs are often in the 70s, and mornings in May and June are frequently gray. Many older homes here were built without central air, and a lot of owners never miss it.
- A few miles inland on the Westside. Mar Vista, Brentwood and the area around Century City. Still influenced by the ocean, but the fog burns off sooner and afternoons run a little warmer. A middle ground: more sun, not much more heat.
- The central basin and hills. Hancock Park, Beverly Hills, Hollywood and the Bird Streets above Sunset. Warmer in summer, with highs often in the 80s. Hillside homes sometimes catch breezes and sit above the haze, while canyons can hold heat.
- The Eastside. Silver Lake, Los Feliz and Eagle Rock. Farther from the ocean, so summers are reliably warm and the marine layer is thinner. Eagle Rock, tucked between hills, tends to run warmer than Silver Lake.
- The San Fernando Valley. Studio City and points west and north. The hottest summers in the city, with highs in the 90s common and occasional days over 100 in the western Valley. Winters are cooler at night than the coast. Studio City, right against the hills and closer to Hollywood, is milder than the far west Valley.
Typical summer and winter highs by area
Here's how that plays out in the official numbers. These are average daily high temperatures from NOAA's 1991 to 2020 climate normals for weather stations across the county, rounded to the nearest degree. August is usually the warmest month and January the coolest.
| Station | Average August high | Average January high |
|---|---|---|
| Santa Monica | 77°F | 66°F |
| LAX (Westchester) | 77°F | 66°F |
| Westwood (UCLA) | 79°F | 68°F |
| Long Beach | 83°F | 67°F |
| Downtown LA (USC) | 84°F | 68°F |
| Burbank | 89°F | 67°F |
| Pasadena | 91°F | 68°F |
| Van Nuys | 93°F | 68°F |
| Woodland Hills (Pierce College) | 97°F | 70°F |
The pattern is the whole story in one column: about a 20 degree spread on an average August afternoon between the coast and the west Valley, and almost none in January. Sources: the Downtown figures are from the National Weather Service Los Angeles office, and the other stations are from the Los Angeles Almanac's table of NOAA normals. You can look up any station yourself through NOAA's climate normals. Averages smooth out the extremes, so individual days, especially heat waves, can run well above these numbers.
What it means for the house
Climate is one of the most practical things to think about when you compare homes here.
- Air conditioning. Inland, central air is close to essential for summer comfort. At the coast, plenty of homes rely on open windows and ceiling fans. If a coastal house has no AC, that's normal; if a Valley house has none, budget for it.
- Pools. A pool in the Valley gets heavy use from May into October. Near the beach, the water stays cooler and many owners heat their pools.
- Outdoor living. Coastal yards are pleasant on summer afternoons. Inland, the best outdoor hours are often mornings and evenings, so shade, trees and covered patios matter.
- Salt air. Close to the ocean, salt and moisture are harder on metal, paint and exterior finishes. It's worth a look during inspections.
- Fire weather. In fall and winter, dry Santa Ana winds can push temperatures up everywhere and raise fire risk, especially in hillside and canyon areas. That's a separate topic, and an important one for insurance.
How to feel it for yourself
If you can, visit the areas you're considering at different times of day, and ideally in different seasons. A neighborhood that feels perfect on a January afternoon can feel very different on a July one, and a coastal street that's gray at 9 a.m. in June is often bright by lunch.
A simple test: check the forecast for Santa Monica, Downtown and Woodland Hills on the same summer day. The gap between them is the easiest way to understand LA's weather. For long-term averages, NOAA publishes official climate normals by weather station.
For more on choosing an area, start with our guide to moving to Los Angeles.
General information, not advice. Price figures are estimates from public data and may be out of date.
