2025 Compare Climate & Weather:
Mount Pleasant, SC vs Harwich, MA

Highlights

On average, there are 201 sunny days per year in Harwich. Mount Pleasant averages 211 sunny days per year. The US average is 205 sunny days.

Harwich, Massachusetts gets 47.6 inches of rain, on average, per year. Mount Pleasant, South Carolina gets 48.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Harwich averages 25.1 inches of snow per year. Mount Pleasant averages 0.3 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Harwich, Massachusetts
Summer High: the July high is around 77.8 degrees
Winter Low: the January low is 23.4
Rain: averages 47.6 inches of rain a year
Snow: averages 25.1 inches of snow a year

Mount Pleasant, 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 0.3 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Harwich is 7.1 (10=best), which means it is one of the most pleasant places in Massachusetts.

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

Today's Weather - Mount Pleasant, SC

71°F

Today's Weather - Harwich, MA

50°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Mount Pleasant / Harwich

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

July is the hottest month for Harwich with an average high temperature of 77.8°, which ranks it as one of the coolest places in Massachusetts. In Harwich, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Harwich are July, August and June.

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

January has the coldest nighttime temperatures for Harwich with an average of 23.4°. This is one of the warmest places in Massachusetts.

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

In Harwich, there are 0.9 days annually when the high temperature is over 90°, which is one of the coolest places in Massachusetts.

In Mount Pleasant, 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 Harwich, there are 97.2 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Massachusetts.

In Mount Pleasant, 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 Harwich, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Massachusetts.

August is the wettest month in Mount Pleasant 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 Mount Pleasant means that it is wetter than most places in South Carolina.


March is the wettest month in Harwich with 4.8 inches of rain, and the driest month is July with 3.3 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Autumn, which is the driest season. The annual rainfall of 47.6 inches in Harwich means that it is drier than most places in Massachusetts.

August is the rainiest month in Mount Pleasant with 11.6 days of rain, and May is the driest month with only 6.8 rainy days. There are 105.6 rainy days annually in Mount Pleasant, 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.

December is the rainiest month in Harwich with 11.0 days of rain, and July is the driest month with only 7.1 rainy days. There are 107.4 rainy days annually in Harwich, which is less rainy than most places in Massachusetts. The rainiest season is Spring 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 0.3 inches in Mount Pleasant means that it is less snowy than most places in South Carolina.

An annual snowfall of 25.1 inches in Harwich means that it is one of the least snowy places in Massachusetts.

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

February is the snowiest month in Harwich with 8.6 inches of snow, and 6 months of the year have significant snowfall.