The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Costa Mesa, CA vs Rancho Santa Margarita, CA

2025 Compare Climate & Weather:
Costa Mesa, CA vs Rancho Santa Margarita, CA

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Highlights

On average, there are 279 sunny days per year in Rancho Santa Margarita. Costa Mesa averages 274 sunny days per year. The US average is 205 sunny days.

Rancho Santa Margarita, California gets 13.8 inches of rain, on average, per year. Costa Mesa, California gets 12 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Rancho Santa Margarita averages 0 inches of snow per year. Costa Mesa averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Rancho Santa Margarita, California
Summer High: the July high is around 88.5 degrees
Winter Low: the January low is 43.4
Rain: averages 13.8 inches of rain a year
Snow: averages 0 inches of snow a year

Costa Mesa, California
Summer High: the July high is around 77.7 degrees
Winter Low: the January low is 47.8
Rain: averages 12 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index
Rancho Santa Margarita

The annual BestPlaces Comfort Index for Rancho Santa Margarita is 8.9 (10=best), which means it is more comfortable than most places in California.

8.9 / 10
May, October and June are the most pleasant months in Rancho Santa Margarita, while February and December are the least comfortable months.

Costa Mesa

The annual BestPlaces Comfort Index for Costa Mesa is 9.3 (10=best), which means it is one of the most pleasant places in California.

9.3 / 10
June, October and September are the most pleasant months in Costa Mesa, while January and February are the least comfortable months.

Average Monthly High / Low (°F)
MonthCosta Mesa, CARancho Santa Margarita, CA
January67° / 48°68° / 43°
February67° / 49°68° / 44°
March67° / 51°71° / 46°
April69° / 54°75° / 48°
May71° / 58°78° / 53°
June74° / 61°82° / 57°
July78° / 65°89° / 61°
August79° / 65°90° / 61°
September79° / 63°88° / 59°
October75° / 59°81° / 54°
November71° / 52°73° / 47°
December66° / 47°67° / 42°
Hot, Freezing, Rainy, Snowy Days: Costa Mesa / Rancho Santa Margarita
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 00 / 26 / 60 / 0
February0 / 00 / 27 / 60 / 0
March0 / 00 / 16 / 60 / 0
April1 / 20 / 03 / 30 / 0
May0 / 30 / 01 / 20 / 0
June1 / 50 / 01 / 10 / 0
July2 / 120 / 00 / 10 / 0
August2 / 160 / 00 / 00 / 0
September3 / 130 / 01 / 10 / 0
October2 / 50 / 02 / 20 / 0
November0 / 10 / 14 / 30 / 0
December0 / 00 / 35 / 50 / 0
August is the hottest month for Costa Mesa with an average high temperature of 79.4°, which ranks it as cooler than most places in California. In Costa Mesa, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Costa Mesa are July, September and August.

August is the hottest month for Rancho Santa Margarita with an average high temperature of 90.3°, which ranks it as about average compared to other places in California. In Rancho Santa Margarita, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rancho Santa Margarita are May, October and April.
December has the coldest nighttime temperatures for Costa Mesa with an average of 47.1°. This is one of the warmest places in California.

December has the coldest nighttime temperatures for Rancho Santa Margarita with an average of 42.4°. This is warmer than most places in California.

In Costa Mesa, there are 10.4 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Rancho Santa Margarita, there are 57.7 days annually when the high temperature is over 90°, which is about average compared to other places in California.

In Costa Mesa, there are 0.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Rancho Santa Margarita, there are 8.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Costa Mesa, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

In Rancho Santa Margarita, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

February is the wettest month in Costa Mesa with 2.8 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 60% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 12.0 inches in Costa Mesa means that it is drier than most places in California.


February is the wettest month in Rancho Santa Margarita with 3.4 inches of rain, and the driest month is June with 0.1 inches. The wettest season is Spring with 61% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 13.8 inches in Rancho Santa Margarita means that it is drier than most places in California.

February is the rainiest month in Costa Mesa with 6.6 days of rain, and July is the driest month with only 0.4 rainy days. There are 36.4 rainy days annually in Costa Mesa, which is less rainy than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 4% chance of a rainy day.

February is the rainiest month in Rancho Santa Margarita with 6.1 days of rain, and August is the driest month with only 0.4 rainy days. There are 35.5 rainy days annually in Rancho Santa Margarita, which is less rainy than most places in California. The rainiest season is Spring when it rains 48% of the time and the driest is Autumn with only a 5% chance of a rainy day.

There is rarely any recorded snowfall in Costa Mesa, ranking it as one of the least snowy places in California.

There is rarely any recorded snowfall in Rancho Santa Margarita, ranking it as one of the least snowy places in California.
Any measurable snowfall is a rare occurance in Costa Mesa.

Any measurable snowfall is a rare occurance in Rancho Santa Margarita.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Costa Mesa    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Costa Mesa

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Reviews for Rancho Santa Margarita    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Rancho Santa Margarita

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Zips In Costa Mesa, California
92627, 92626
Zips In RANCHO SANTA MARGARITA, CALIFORNIA
92688, 92678
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