Westlake Village (CA) Temperature by Month

Westlake Village in California, United States of America sees significant seasonal temperature differences, with daytime highs between 18°C (64°F) in December and 31°C (88°F) in August, averaging 24°C (75°F) annually. Explore the full monthly breakdown below.

Visitors to Westlake Village will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 16°C (61°F) in August to 8°C (46°F) in December.

The chart below illustrates the average maximum day and minimum night temperatures in Westlake Village by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. August, the city's warmest month, averages 347 hours of sunshine.

The chart below shows the average temperature throughout the year:

Westlake Village's average annual maximum temperature is 24°C (75°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Westlake Village, December is the coolest month, with average highs of 18°C (64°F) and humidity around 52%, considered moderate. In August, the warmest month, temperatures average 31°C (88°F) with 71% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Westlake Village's weather, including monthly rainfall, sunshine hours, and humidity, visit our Westlake Village climate page.