Costa Mesa
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Current – 10-day forecastForecast

Costa Mesa Weather in May

With daytime temperatures of 22°C (72°F) and nighttime lows of 15°C (59°F), May in Costa Mesa brings high temperatures during the day. The excellent weather makes it an appealing time to visit.

Rainfall in Costa Mesa in May

Records from the past 30 years suggest around 2 days of rain, with 7.1 mm (0.3 in) average for the month. When rain does fall, showers tend to be light and brief. Most days will be dry.

Temperature in Costa Mesa in May

If you're visiting Costa Mesa in May, expect excellent temperatures with highs of 22°C (72°F) and overnight lows of 15°C (59°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 15°C (59°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 Costa Mesa in May

Enjoy a sunny month with about 311 hours of sunshine, the clear skies make Costa Mesa even more beautiful.

If you're inclined towards comfortable temperatures and drier conditions, May is a good time to visit Costa Mesa.

Costa Mesa Temperature in May

Min Temperature
15°C (59°F)
Max Temperature
22°C (72°F)
Chance of Rain
7%
Precipitation
7.1 mm (0.3 in)
Rainy days
2 days
Sunshine
311 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 May

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 May →

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 May

For Costa Mesa in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Almost no rain is expected, so no need to bring rain gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Costa Mesa in May

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

  • Cycling
    10/10
  • Walking
    10/10
  • Barbeque
    9/10
  • Camping
    10/10
  • Outdoor sports
    10/10

Costa Mesa 3-Day Forecast

More climate data for Costa Mesa

Popular in May

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

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