August weather forecast
Charleston International Airport, SC

With August comes a slight relief from the peak temperatures of July, yet maintaining the overall summer vibe in Charleston. The temperatures remain consistent, peaking at 84°F (28.9°C), and the days showcase amiable weather patterns. The atmosphere transitions towards the end, gearing up for the following autumn months. The rainfall overture has slightly less intensity than that of July, yet enough precipitation is recorded. The sun continues to be a significant part of August weather, adding warmth and light to the pleasant summer evenings.

Temperature

Stepping into August, Charleston International Airport records an average high-temperature of a warm 84.2°F (29°C), almost consistent with July. Charleston International Airport's August nights cool down significantly from the day's heat, to an average low-temperature of 62.6°F (17°C).

Rainfall

In Charleston International Airport, during August, the rain falls for 11 days and regularly aggregates up to 4.02" (102mm) of precipitation. In Charleston International Airport, during the entire year, the rain falls for 151 days and collects up to 41.93" (1065mm) of precipitation.

Daylight

In Charleston International Airport, the average length of the day in August is 13h and 20min.
On the first day of August, sunrise is at 6:34 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 7:45 pm EDT.

Sunshine

The months with the most sunshine are May through August, with an average of 8h of sunshine.

UV index

June through August, with an average maximum UV index of 9, are months with the highest UV index. A UV Index reading of 8 to 10 represents a very high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 9 during August leads to these advisories:
Always safeguard yourself; without protection, skin and eyes can get damaged instantly. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Being cautious under the Sun means limiting direct exposure, especially if you have a tendency to burn. And always wear sunscreen with 30 SPF or higher.