August weather forecast
Simpsonville, SC

August in Simpsonville, South Carolina continues the summer season, with temperatures marginally cooler than in July. This month is a subtle reminder of the impending autumn, yet the summer heat lingers on, providing residents with enough opportunities to relish the sun. With declining daylight hours, the sights of the crisp sunset can be enjoyed every evening. The scenery of Simpsonville becomes even more breath-taking as the heat starts to subside slowly. People eagerly anticipate the autumnal weather while enjoying the final summer month.

Temperature

August's advent denotes a minor fluctuation in the average high-temperature to a still hot 88.3°F (31.3°C) from July's 90.5°F (32.5°C). Simpsonville observes an average nighttime low-temperature of 67.8°F (19.9°C) during the month of August.

Heat index

For August, the heat index is calculated to be a fiery hot 102.2°F (39°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Note that heat index values are valued for light wind and location in the shade. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In Simpsonville, the average relative humidity in August is 71%.

Rainfall

In Simpsonville, in August, during 17.9 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. In Simpsonville, during the entire year, the rain falls for 163.9 days and collects up to 35.51" (902mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 25min.
On the first day of the month, sunrise is at 6:39 am and sunset at 8:31 pm. On the last day of August, sunrise is at 7:01 am and sunset at 7:56 pm EDT.

Sunshine

In August, the average sunshine is 10.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 6 in August translates into these instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.