Weather in Costa Mesa in January
Costa Mesa, United States averages a high of 17.4°C (63.3°F) and low of 8.5°C (47.3°F) in January, with 5 rain days and 8.8 hours of daily sunshine. Travel score: 76.7/100 (Good). The best time to visit Costa Mesa is July.
High
17°C63°F
Low
9°C47°F
🌧️
5
rain days
☀️
8.8
hrs/day sunshine
💧
75%
humidity
77— Good
January 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 January?
Costa Mesa receives an average of 64.4mm of rainfall across 5 rainy days in January. The annual total is 310.6mm.
What should I pack for Costa Mesa in January?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 17°C
Recommended
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
🎉Visiting United States in January?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31