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California Weather in August

With daytime temperatures of 29°C (84°F) and nighttime lows of 20°C (68°F), August in California brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 119 mm (4.7 in) falls on average.

Rainfall in California in August

Looking at the last 30 years, the data shows about 11 days with rain, averaging 119 mm (4.7 in) for the month. 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

Temperatures in California in August top out at 29°C (84°F) and drop to 20°C (68°F) overnight. Overall, the month follows a fairly predictable daily temperature pattern. Nights are mild at around 20°C (68°F), which is comfortable for most people.

For California itself, May generally stands out with 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.

California Temperature in August

Min Temperature
20°C (68°F)
Max Temperature
29°C (84°F)
Chance of Rain
37%
Precipitation
119 mm (4.7 in)
Rainy days
11 days

California Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in California - and find the best time to visit.

Best Places in the United States of America in August

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in August →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

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.

What To Do in California in August

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

  • Cycling
    7/10
  • Walking
    7/10
  • Camping
    6/10
  • Outdoor sports
    7/10

California 3-Day Forecast

More climate data for California

Popular in August

Where to go in August - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.