California Weather in August

In California, August brings very high daytime temperatures around 31°C (88°F), with nights cooling to 19°C (66°F). Expect quite a bit of rainfall this month.

Rainfall in California in August

This month experiences about 8 days of rain according to historical data, averaging 94 mm (3.7 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in California in August

August in California brings typical temperatures with highs around 31°C (88°F) and lows of 19°C (66°F). It's usually most comfortable outside during the morning and later in the day. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in California in August

There are approximately 289 hours of sunshine this month, resulting in mostly clear days.

If you prefer enjoying temperate temperatures and rain-free days, May, June, September and October typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our California's climate page.

California Temperature in August

Min Temperature 19°C (66°F)  

Max Temperature 31°C (88°F)  

Chance of Rain 27%  

Precipitation 94 mm (3.7 in)  

Rainy days 8 days  

Humidity 70% *  

Sunshine 289 hours *  

Percentage Sunshine 68% *  

* Data from: Columbia, the United States of America (41 KM, 25 Miles).

What to Wear in California in August

Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in California in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our California's climate page.

More climate data for California

Temperature Rainfall Sunshine Humidity

See the full California climate overview or explore weather in the United States of America.