El Segundo (CA) Temperature by Month

El Segundo in California, United States of America enjoys a stable climate, with daytime temperatures staying close to 22°C (72°F) throughout the year. Explore the full monthly breakdown below.

El Segundo enjoys a stable climate with temperatures staying pretty much the same throughout the year. Maximum daytime temperatures range from a pleasant 19°C (66°F) in December to a comfortable 25°C (77°F) in September. Nights are consistently cool, with lows between 18°C (64°F) and 9°C (48°F).

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

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. September, the warmest month, averages 278 hours of sunshine.

The chart below shows the average temperature throughout the year:

El Segundo's average annual maximum temperature is 22°C (72°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

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

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

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 El Segundo, December is the coolest month, with average highs of 19°C (66°F) and humidity around 52%, considered moderate. In September, the warmest month, temperatures average 25°C (77°F) with 67% 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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in El Segundo this rarely lasts long on the ground.

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