Last updated: March 2, 2024
The weather in Charleston, United States, during January is characterized by an average temperature of 2°C (37°F). Highs can soar to 19°C (67°F), while lows may dip to -14°C (8°F). Typically, the humidity level in Charleston throughout January hovers around 88%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In January, Charleston averages 101 mm (4.0 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 9 hours 49 minutes of daylight, with the sun shining for approximately 3 hours 52 minutes each day. Additionally, there is a 32% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In January, the UV Index in Charleston reaches a maximum of 3, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 11:00 and 13:00, during which unprotected skin may burn in as little as 30 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 | 0 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 0 | 0 |
| Exposure | Low | Moderate | Low | ||||||||||
| Time to burn | 45 min | 30 min | 45 min | ||||||||||