United StatesThe weather in August in California
It's hot in August in California with an average temperature of 37°C. Temperatures this month range from a low of 35°C to a high of 39°C. At night, you can expect temperatures between 19°C and 22°C.
August isn’t a good month to be in California. The average temperature of 37°C this month is uncomfortably hot for a comfortable stay.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in August for California, United States. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 43°C in 2020, California reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 25°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 15°C to a highest value of 28°C.
Rainfall amount
According to weather history, there is only 0,6 mm of precipitation in August. The wind speed is around 3 Bft, mostly coming from the Northwest.
Daily weather in August for California
Click on any day in August to get detailed info about the usual weather on that day in California. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
| California | New York | |
|---|---|---|
| Average temperature | 37°C | 30°C |
| Max. temperature | 39°C | 31°C |
| Min. temperature | 19°C | -5°C |
| Total precipitation | 0,6 mm | 79 mm |
| Rainy days | 1 day | 13 days |
Start of August
The month of August starts in California with hot temps, averaging around 37°C during the day and nights around 21°C.
Mid August
By mid-August, daytime temps rise to around 38°C, with nights around 22°C. No precipitation expected during this period, so you can enjoy plenty of sunshine.
End of August
By the end of August, the average daytime temperature in California is around 37°C, while nighttime temps are about 20°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of California for all months and discover the best travel time
The climate in California is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in California to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in August in California, United States. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in California
Temperature in August in California over the years
Precipitation charts
These charts show the average amount of precipitation in August in California, United States. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in August in California
Total precipitation in August in California over the years
Daily UV index in August in California
This chart shows the average daily UV index in August in California, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in August in California
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Average weather in California by month
Click on a month below to see detailed weather info for California. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.