2025 Compare Climate & Weather:
San Antonio, TX vs Costa Mesa, CA

Highlights

On average, there are 274 sunny days per year in Costa Mesa. San Antonio averages 220 sunny days per year. The US average is 205 sunny days.

Costa Mesa, California gets 12 inches of rain, on average, per year. San Antonio, Texas gets 32.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Costa Mesa averages 0 inches of snow per year. San Antonio averages 0.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

San Antonio, Texas
Summer High: the July high is around 94.2 degrees
Winter Low: the January low is 40.5
Rain: averages 32.8 inches of rain a year
Snow: averages 0.2 inches of snow a year

BestPlaces Comfort Index

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.

The annual BestPlaces Comfort Index for San Antonio is 7.0 (10=best), which means it is about average compared to other places in Texas.

Today's Weather - San Antonio, TX

81°F

Today's Weather - Costa Mesa, CA

76°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Antonio / Costa Mesa

August is the hottest month for San Antonio with an average high temperature of 95.7°, which ranks it as warmer than most places in Texas. In San Antonio, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Antonio are April, October and March.

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.

January has the coldest nighttime temperatures for San Antonio with an average of 40.5°. This is warmer than most places in Texas.

December has the coldest nighttime temperatures for Costa Mesa with an average of 47.1°. This is one of the warmest places in California.

In San Antonio, there are 105.8 days annually when the high temperature is over 90°, which is hotter than most places in Texas.

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 San Antonio, there are 16.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Texas.

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 San Antonio, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Texas.

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.

October is the wettest month in San Antonio with 4.2 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Winter with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 32.8 inches in San Antonio means that it is about average compared to other places in Texas.


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.

March is the rainiest month in San Antonio with 9.0 days of rain, and August is the driest month with only 4.5 rainy days. There are 82.5 rainy days annually in San Antonio, which is rainier than most places in Texas. The rainiest season is Summer when it rains 28% of the time and the driest is Autumn with only a 21% chance of a rainy day.

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.

An annual snowfall of 0.2 inches in San Antonio means that it is about average compared to other places in Texas.

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

January is the snowiest month in San Antonio with 0.2 inches of snow, and no months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Costa Mesa.