Last updated: March 2, 2024
The weather in Charleston, United States, during July is characterized by an average temperature of 27°C (81°F). Highs can soar to 34°C (94°F), while lows may dip to 18°C (65°F). Typically, the humidity level in Charleston throughout July hovers around 79%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In July, Charleston averages 101 mm (4.0 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 14 hours 22 minutes of daylight, with the sun shining for approximately 11 hours 13 minutes each day. Additionally, there is a 55% 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 12:00 and 14:00, 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 | 2 | 4 | 6 | 8 | 10 | 10 | 10 | 8 | 5 | 3 | 2 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | Moderate | Low | |||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 30 min | 45 min | |||||||