Weather in Costa Mesa — today, tomorrow and 14-day forecast
Weather in Costa Mesa now: +28°, mostly clear, wind 6.6 m/s, humidity 79%. Accurate forecast for today, tomorrow, 3 days and 2 weeks — temperature, precipitation, pressure and wind.
Weather in Costa Mesa now
Hourly forecast for today in Costa Mesa
Weather in Costa Mesa tomorrow
From +20° to +28° — day and night.
Weather in Costa Mesa for 3 days
From +20° to +29° — day and night.
Weather in Costa Mesa for the week
Including the 5-day outlook.
From +20° to +29° — day and night.
Weather in Costa Mesa for 2 weeks
Including the 10-day outlook.
From +20° to +30° — day and night.
Weekend weather in Costa Mesa
Weather for the weather-sensitive
📒 Weather diary in Costa Mesa
Ready-made observation table for August: past days are already filled in with weather-station data — for school and beyond. Open the diary →
What to do in Costa Mesa in weather like this 🎯
The Moon today 🌙
Costa Mesa, Kaliforniya, United States. Population 113 204.
Precipitation map 🌧️
Cities near Costa Mesa 📍
FAQ about weather in Costa Mesa ❓
What's the weather in Costa Mesa right now?
Now +28°, mostly clear, wind 6.6 m/s, W, humidity 79%. Feels like +29°.
What's the weather in Costa Mesa tomorrow?
Tomorrow: +28° by day, +20° at night, partly cloudy.
Sunrise and sunset in Costa Mesa?
Sunrise 05:16, sunset 18:35, day length 13h 19m.
What's the pressure and humidity in Costa Mesa?
Pressure 759 mmHg, humidity 79%, wind 7 m/s. Matters for weather-sensitive people.
Do I need an umbrella in Costa Mesa today?
No, precipitation is unlikely — you can go out without an umbrella.
Will it be hot in Costa Mesa?
Up to +29° by day — hot. Drink more water, avoid the sun from noon to 4 PM, wear light clothes and a hat.
Do I need sunscreen in Costa Mesa?
Yes, the UV index is 10 — high. Use SPF 30+, especially for children; no more than 20-30 minutes in direct sun unprotected.
How long is it safe to stay in the sun in Costa Mesa?
At UV 10, no more than 20–30 minutes unprotected; longer with SPF 30+ and shade.
Add the “Pogoda 1” weather widget — free
Pick a city, size and color — get ready-to-paste code. Works on any site.
Get the widget →
Weather in Costa Mesa — in detail
Weather in Costa Mesa from “Pogoda 1” — an accurate, free forecast: current temperature, feels-like, wind, atmospheric pressure, humidity and precipitation. Available for today, tomorrow, 3, 5 and 10 days, a week, 2 weeks and a month, plus hourly weather, monthly climate, water temperature, air quality and an observation archive since 2017.
To quickly check the weather in Costa Mesa anytime, add the city to favorites — and get a daily forecast by email at 17:00 (Moscow time). Note: the forecast may be refined as new data arrives. Data: OpenWeather, Open-Meteo, met.no.