Edisto Island (SC) Temperature by Month

Edisto Island, South Carolina, United States of America has an average annual maximum temperature of 24°C (75°F), ranging from 15°C (59°F) in January to 33°C (91°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The weather in Edisto Island experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 24°C (75°F) in July to 5°C (41°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Edisto Island by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. July, the city's warmest month, averages 288 hours of sunshine.

The chart below shows the average temperature throughout the year:

Edisto Island'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:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Glasgow, Scotland averages 13°C (55°F) a year, mild but often grey, with cold winters and rarely hot summers.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

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 Edisto Island, January is the coolest month, with average highs of 15°C (59°F) and humidity around 69%, considered high. In July, the warmest month, temperatures average 33°C (91°F) with 76% 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.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Edisto Island's weather, including monthly rainfall, sunshine hours, and humidity, visit our Edisto Island climate page.