Isle of Palms (SC) Temperature by Month
Isle of Palms in South Carolina, United States of America sees significant seasonal temperature differences, with daytime highs between 15°C (59°F) in January and 32°C (90°F) in August, averaging 24°C (75°F) annually. Explore the full monthly breakdown below.
Isle of Palms Monthly Temperatures
Depending on the time of the year, temperatures range from very warm to mild in Isle of Palms. Nighttime lows follow the same pattern, ranging from 24°C (75°F) to 5°C (41°F).
The chart below illustrates the average maximum day and minimum night temperatures in Isle of Palms by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. August, the warmest month, averages 257 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Isle of Palms vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Isle of Palms vs World: Temperature Compared
Isle of Palms's average annual maximum temperature is 24°C (75°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Isle of Palms?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Isle of Palms, January is the coolest month, with average highs of 15°C (59°F) and humidity around 69% — considered high. In August, the warmest month, temperatures average 32°C (90°F) with 79% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Isle of Palms this rarely lasts long on the ground.
For more on Isle of Palms's weather — including monthly rainfall, sunshine hours, and humidity — visit our Isle of Palms climate page.
