2025 Compare Cities Climate:
Simi Valley, CA vs Costa Mesa, CA

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Highlights
- Costa Mesa has 30.2% less rainy days than Simi Valley.
- Costa Mesa has 1.1% less Sunny Days than Simi Valley.
- On the BestPlaces comfort index, Costa Mesa scores 8.1% better than Simi Valley
 Simi Valley, CACosta Mesa, CAUnited States
 Rainfall  Unlock1238
 Snowfall0  Unlock28
 Precipitation  Unlock36106
 Sunny277  Unlock205
 Avg. July High  Unlock7886
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock9.37
 UV Index6  Unlock4.3
 Elevation  Unlock982443
Reviews for Simi Valley    22 Reviews

I've live in two different neighborhoods since fall of 1996 and depending on the neighborhood you're quality of life experience will vary. The price of housing is such  More

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Over 15 years ago

I have lived in Simi Valley for 23 Years. I love it here but due to the cost of living am looking to relocate to another state/City where my money will go further. Simi  More

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Over 16 years ago

simi valley is a very nice place to live within the shadow of the LA metro area. it has low crime and reasonable housing costs with ready access to indoor and outdoor  More

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Reviews for Costa Mesa    8 Reviews

Over 15 years ago

Costa mesa has awesome shopping but is way too crowded and I have had 3 cars stolen in the past 5 years along with countless break-ins and theft. Expensive. Close to  More

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Over 16 years ago

Costa Mesa has a near perfect climate . . . plenty of sun but rarely over 100 degrees (our house doesn't even have AC). Nestled between Newport Beach and Huntington  More

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We have a good amount of low-income, medium-income, and relatively high-income  More

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