Last updated: March 2, 2024
The weather in Charleston, United States, during July is characterized by an average temperature of 25°C (77°F). Highs can soar to 33°C (92°F), while lows may dip to 15°C (59°F). Typically, the humidity level in Charleston throughout July hovers around 82%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In July, Charleston averages 124 mm (4.9 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 14 hours 30 minutes of daylight, with the sun shining for approximately 11 hours 9 minutes each day. Additionally, there is a 51% probability of sunny days during this period.
Precipitation
Rainy days
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Chance of sun
In July, the UV Index in Charleston reaches a maximum of 10, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 3 | 5 | 7 | 9 | 10 | 10 | 9 | 7 | 4 | 2 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||