The highest day temperature in July 2023 was 104°F. The lowest night temperature was 74°F. The average values for day and night temperatures during July were 96.2°F и 83.0°F respectivly.

The average sea surface temperature in July 2023 for Charleston was 88.2°F. The maximum and minimum values were 85.2°F and 90.4°F respectively.

Most of the days in July are sunny but you can also expect cloudy and gloomy days.

Precipitation total in July for Charleston is 5.0 in. It makes july one of the most rainy months of the year.

The average wind speed in July is 8.2 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Charleston in July is 9.0 hours.