Weather in Costa Mesa in March
Costa Mesa, United States averages a high of 18°C (64.4°F) and low of 10.2°C (50.4°F) in March, with 5 rain days and 10.8 hours of daily sunshine. Travel score: 79.3/100 (Good). The best time to visit Costa Mesa is July.
High
18°C64°F
Low
10°C50°F
🌧️
5
rain days
☀️
10.8
hrs/day sunshine
💧
77%
humidity
79— Good
March in Costa Mesa is mild and mostly dry — good for most activities.
What are the average temperatures in Costa Mesa?
How much does it rain in Costa Mesa in March?
Costa Mesa receives an average of 45.6mm of rainfall across 5 rainy days in March. The annual total is 310.6mm.
What should I pack for Costa Mesa in March?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 18°C
Recommended
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to United States in March?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31