2025 Compare Climate & Weather:
Portland, OR vs North Charleston, SC

Highlights

On average, there are 208 sunny days per year in North Charleston. Portland averages 144 sunny days per year. The US average is 205 sunny days.

North Charleston, South Carolina gets 49.4 inches of rain, on average, per year. Portland, Oregon gets 42.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

North Charleston averages 0.5 inches of snow per year. Portland averages 2.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

North Charleston, South Carolina
Summer High: the July high is around 90.3 degrees
Winter Low: the January low is 38
Rain: averages 49.4 inches of rain a year
Snow: averages 0.5 inches of snow a year

Portland, Oregon
Summer High: the July high is around 80.5 degrees
Winter Low: the January low is 36.4
Rain: averages 42.8 inches of rain a year
Snow: averages 2.6 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Portland is 7.5 (10=best), which means it is more comfortable than most places in Oregon.

Today's Weather - Portland, OR

74°F

Today's Weather - North Charleston, SC

71°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Portland / North Charleston

August is the hottest month for Portland with an average high temperature of 81.1°, which ranks it as cooler than most places in Oregon. In Portland, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Portland are September, July and August.

July is the hottest month for North Charleston with an average high temperature of 90.3°, which ranks it as cooler than most places in South Carolina. In North Charleston, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for North Charleston are October, April and May.

December has the coldest nighttime temperatures for Portland with an average of 35.6°. This is warmer than most places in Oregon.

January has the coldest nighttime temperatures for North Charleston with an average of 38.0°. This is one of the warmest places in South Carolina.

In Portland, there are 11.6 days annually when the high temperature is over 90°, which is cooler than most places in Oregon.

In North Charleston, there are 48.6 days annually when the high temperature is over 90°, which is cooler than most places in South Carolina.

In Portland, there are 29.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oregon.

In North Charleston, there are 24.2 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in South Carolina.

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

In North Charleston, 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.

December is the wettest month in Portland with 6.8 inches of rain, and the driest month is July with 0.7 inches. The wettest season is Spring with 41% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 42.8 inches in Portland means that it is about average compared to other places in Oregon.


August is the wettest month in North Charleston with 6.8 inches of rain, and the driest month is November with 2.5 inches. The wettest season is Autumn with 37% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 49.4 inches in North Charleston means that it is wetter than most places in South Carolina.

November is the rainiest month in Portland with 19.3 days of rain, and August is the driest month with only 3.7 rainy days. There are 155.9 rainy days annually in Portland, which is rainier than most places in Oregon. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 11% chance of a rainy day.

August is the rainiest month in North Charleston with 12.3 days of rain, and November is the driest month with only 6.9 rainy days. There are 106.8 rainy days annually in North Charleston, which is rainier than most 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.

An annual snowfall of 2.6 inches in Portland means that it is less snowy than most places in Oregon.

An annual snowfall of 0.5 inches in North Charleston means that it is less snowy than most places in South Carolina.

December is the snowiest month in Portland with 0.9 inches of snow, and 3 months of the year have significant snowfall.

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