2025 Compare Climate & Weather:
Portsmouth, NH vs Ocean Isle Beach, NC

Highlights

On average, there are 218 sunny days per year in Ocean Isle Beach. Portsmouth averages 198 sunny days per year. The US average is 205 sunny days.

Ocean Isle Beach, North Carolina gets 53.3 inches of rain, on average, per year. Portsmouth, New Hampshire gets 50.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Ocean Isle Beach averages 1.1 inches of snow per year. Portsmouth averages 53.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Ocean Isle Beach, North Carolina
Summer High: the July high is around 88.8 degrees
Winter Low: the January low is 34.7
Rain: averages 53.3 inches of rain a year
Snow: averages 1.1 inches of snow a year

Portsmouth, New Hampshire
Summer High: the July high is around 81.9 degrees
Winter Low: the January low is 13.8
Rain: averages 50.1 inches of rain a year
Snow: averages 53.2 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Ocean Isle Beach is 7.4 (10=best), which means it is less comfortable than most places in North Carolina.

The annual BestPlaces Comfort Index for Portsmouth is 6.8 (10=best), which means it is one of the most pleasant places in New Hampshire.

Today's Weather - Portsmouth, NH

48°F

Today's Weather - Ocean Isle Beach, NC

68°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Portsmouth / Ocean Isle Beach

July is the hottest month for Portsmouth with an average high temperature of 81.9°, which ranks it as warmer than most places in New Hampshire. In Portsmouth, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Portsmouth are June, August and July.

July is the hottest month for Ocean Isle Beach with an average high temperature of 88.8°, which ranks it as cooler than most places in North Carolina. In Ocean Isle Beach, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ocean Isle Beach are May, October and April.

January has the coldest nighttime temperatures for Portsmouth with an average of 13.8°. This is one of the warmest places in New Hampshire.

January has the coldest nighttime temperatures for Ocean Isle Beach with an average of 34.7°. This is one of the warmest places in North Carolina.

In Portsmouth, there are 8.0 days annually when the high temperature is over 90°, which is hotter than most places in New Hampshire.

In Ocean Isle Beach, there are 25.3 days annually when the high temperature is over 90°, which is cooler than most places in North Carolina.

In Portsmouth, there are 149.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in New Hampshire.

In Ocean Isle Beach, there are 41.2 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in North Carolina.

In Portsmouth, there are 7.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in New Hampshire.

In Ocean Isle Beach, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in North Carolina.

November is the wettest month in Portsmouth with 4.8 inches of rain, and the driest month is January with 3.5 inches. The wettest season is Summer with 28% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 50.1 inches in Portsmouth means that it is one of the wettest places in New Hampshire.


August is the wettest month in Ocean Isle Beach with 7.1 inches of rain, and the driest month is April with 3.0 inches. The wettest season is Autumn with 33% of yearly precipitation and 20% occurs in Summer, which is the driest season. The annual rainfall of 53.3 inches in Ocean Isle Beach means that it is wetter than most places in North Carolina.

May is the rainiest month in Portsmouth with 11.4 days of rain, and February is the driest month with only 7.7 rainy days. There are 118.3 rainy days annually in Portsmouth, which is one of the least rainy places in New Hampshire. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 23% chance of a rainy day.

August is the rainiest month in Ocean Isle Beach with 12.9 days of rain, and April is the driest month with only 7.1 rainy days. There are 113.9 rainy days annually in Ocean Isle Beach, which is rainier than most places in North Carolina. The rainiest season is Autumn when it rains 31% of the time and the driest is Summer with only a 22% chance of a rainy day.

An annual snowfall of 53.2 inches in Portsmouth means that it is one of the least snowy places in New Hampshire.

An annual snowfall of 1.1 inches in Ocean Isle Beach means that it is less snowy than most places in North Carolina.

January is the snowiest month in Portsmouth with 16.7 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Ocean Isle Beach with 0.6 inches of snow, and 1 month of the year have significant snowfall.