2025 Compare Climate & Weather:
Summerville, SC vs San Antonio, TX

Highlights

On average, there are 220 sunny days per year in San Antonio. Summerville averages 209 sunny days per year. The US average is 205 sunny days.

San Antonio, Texas gets 32.8 inches of rain, on average, per year. Summerville, South Carolina gets 51 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

San Antonio averages 0.2 inches of snow per year. Summerville averages 0.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Summerville, South Carolina
Summer High: the July high is around 91.5 degrees
Winter Low: the January low is 34.6
Rain: averages 51 inches of rain a year
Snow: averages 0.7 inches of snow a year

BestPlaces Comfort Index

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.

The annual BestPlaces Comfort Index for Summerville is 7.3 (10=best), which means it is less comfortable than most places in South Carolina.

Today's Weather - Summerville, SC

79°F

Today's Weather - San Antonio, TX

81°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Summerville / San Antonio

July is the hottest month for Summerville with an average high temperature of 91.5°, which ranks it as warmer than most places in South Carolina. In Summerville, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Summerville are October, April and May.

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.

January has the coldest nighttime temperatures for Summerville with an average of 34.6°. This is warmer than most places in South Carolina.

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

In Summerville, there are 60.7 days annually when the high temperature is over 90°, which is hotter than most places in South Carolina.

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 Summerville, there are 39.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Carolina.

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

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.

August is the wettest month in Summerville with 6.7 inches of rain, and the driest month is November with 2.8 inches. The wettest season is Autumn with 36% of yearly precipitation and 20% occurs in Summer, which is the driest season. The annual rainfall of 51.0 inches in Summerville means that it is wetter than most places in South Carolina.


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.

August is the rainiest month in Summerville with 12.3 days of rain, and November is the driest month with only 6.7 rainy days. There are 103.7 rainy days annually in Summerville, which is about average compared to other places in South Carolina. The rainiest season is Autumn when it rains 33% of the time and the driest is Summer with only a 21% chance of a rainy day.

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.

An annual snowfall of 0.7 inches in Summerville means that it is about average compared to other places in South Carolina.

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

December is the snowiest month in Summerville with 0.3 inches of snow, and no months of the year have significant snowfall.

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