Weather in Costa Mesa in October
Costa Mesa, United States averages a high of 23.3°C (73.9°F) and low of 15°C (59°F) in October, with 2 rain days and 10.4 hours of daily sunshine. Travel score: 92/100 (Excellent). The best time to visit Costa Mesa is July.
High
23°C74°F
Low
15°C59°F
🌧️
2
rain days
☀️
10.4
hrs/day sunshine
💧
74%
humidity
92— Excellent
October in Costa Mesa is warm and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Costa Mesa?
How much does it rain in Costa Mesa in October?
Costa Mesa receives an average of 14.6mm of rainfall across 2 rainy days in October. The annual total is 310.6mm.
What should I pack for Costa Mesa in October?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 23°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
🎉Visiting United States in October?
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