Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Costa Mesa Weather in August
Costa Mesa in August averages 27°C (81°F) during the day and 19°C (66°F) at night. This is the driest month of the year.
Rainfall in Costa Mesa in August
Take advantage of the dry conditions this month, with minimal rain expected. This month experiences about 0 days of rain according to historical data, averaging 0.1 mm (0 in).
Temperature in Costa Mesa in August
August is one of the better months to visit Costa Mesa. Expect 27°C (81°F) during the day and 19°C (66°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. At 19°C (66°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Costa Mesa in August
Enjoy a sunny month with about 351 hours of sunshine, the clear skies make Costa Mesa even more beautiful.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Costa Mesa Temperature in August
Min Temperature
19°C (66°F)
Max Temperature
27°C (81°F)
Chance of Rain
0%
Precipitation
0.1 mm (0 in)
Rainy days
0 days
Sunshine
351 hours *
Percentage Sunshine
*
* Data from: Corona, the United States of America (39 KM, 24 Miles).
Costa Mesa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Costa Mesa - 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 Costa Mesa in August
Warm temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Costa Mesa in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling8/10 -
Walking8/10 -
Barbeque10/10 -
Camping10/10 -
Outdoor sports8/10
Costa Mesa 3-Day Forecast
More climate data for Costa Mesa
See the full Costa Mesa climate overview or explore weather in the United States of America.
Popular in August
Where to go in August - average daytime high across popular destinations.
Kissimmee
33°C (91°F) Orlando33°C (91°F) Miami Beach32°C (90°F) Destin32°C (90°F) New York City
29°C (84°F) Big Bear Lake
27°C (81°F) Los Angeles
24°C (75°F) San Francisco22°C (72°F) Bucket list
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