2025 Compare Climate & Weather:
Bethany Beach, DE vs Kiawah Island, SC

Highlights

On average, there are 207 sunny days per year in Kiawah Island. Bethany Beach averages 203 sunny days per year. The US average is 205 sunny days.

Kiawah Island, South Carolina gets 48.3 inches of rain, on average, per year. Bethany Beach, Delaware gets 44.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Kiawah Island averages 0.4 inches of snow per year. Bethany Beach averages 11.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Kiawah Island, South Carolina
Summer High: the July high is around 89.8 degrees
Winter Low: the January low is 39.3
Rain: averages 48.3 inches of rain a year
Snow: averages 0.4 inches of snow a year

Bethany Beach, Delaware
Summer High: the July high is around 85.6 degrees
Winter Low: the January low is 28
Rain: averages 44.3 inches of rain a year
Snow: averages 11.3 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Kiawah Island is 7.2 (10=best), which means it is less comfortable than most places in South Carolina.

The annual BestPlaces Comfort Index for Bethany Beach is 7.4 (10=best), which means it is one of the most pleasant places in Delaware.

Today's Weather - Bethany Beach, DE

67°F

Today's Weather - Kiawah Island, SC

73°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Bethany Beach / Kiawah Island

July is the hottest month for Bethany Beach with an average high temperature of 85.6°, which ranks it as one of the coolest places in Delaware. In Bethany Beach, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Bethany Beach are September, June and May.

July is the hottest month for Kiawah Island with an average high temperature of 89.8°, which ranks it as cooler than most places in South Carolina. In Kiawah Island, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Kiawah Island are October, May and April.

January has the coldest nighttime temperatures for Bethany Beach with an average of 28.0°. This is one of the warmest places in Delaware.

January has the coldest nighttime temperatures for Kiawah Island with an average of 39.3°. This is one of the warmest places in South Carolina.

In Bethany Beach, there are 18.6 days annually when the high temperature is over 90°, which is cooler than most places in Delaware.

In Kiawah Island, there are 41.1 days annually when the high temperature is over 90°, which is cooler than most places in South Carolina.

In Bethany Beach, there are 73.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Delaware.

In Kiawah Island, there are 17.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in South Carolina.

In Bethany Beach, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Delaware.

In Kiawah Island, 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.

August is the wettest month in Bethany Beach with 4.3 inches of rain, and the driest month is February with 3.0 inches. The wettest season is Autumn with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 44.3 inches in Bethany Beach means that it is drier than most places in Delaware.


August is the wettest month in Kiawah Island with 6.7 inches of rain, and the driest month is May with 2.5 inches. The wettest season is Autumn with 36% of yearly precipitation and 19% occurs in Summer, which is the driest season. The annual rainfall of 48.3 inches in Kiawah Island means that it is wetter than most places in South Carolina.

May is the rainiest month in Bethany Beach with 11.1 days of rain, and February is the driest month with only 9.4 rainy days. There are 122.7 rainy days annually in Bethany Beach, which is one of the rainiest places in Delaware. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 24% chance of a rainy day.

August is the rainiest month in Kiawah Island with 11.7 days of rain, and May is the driest month with only 6.8 rainy days. There are 105.8 rainy days annually in Kiawah Island, which is rainier than most places in South Carolina. The rainiest season is Autumn when it rains 32% of the time and the driest is Summer with only a 21% chance of a rainy day.

An annual snowfall of 11.3 inches in Bethany Beach means that it is less snowy than most places in Delaware.

An annual snowfall of 0.4 inches in Kiawah Island means that it is less snowy than most places in South Carolina.

February is the snowiest month in Bethany Beach with 5.0 inches of snow, and 4 months of the year have significant snowfall.

December is the snowiest month in Kiawah Island with 0.2 inches of snow, and no months of the year have significant snowfall.