Last updated: March 2, 2024
The weather in Philadelphia, United States, during August is characterized by an average temperature of 27°C (80°F). Highs can soar to 35°C (96°F), while lows may dip to 18°C (65°F). Typically, the humidity level in Philadelphia throughout August hovers around 77%.
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Average temperature
Maximum temperature
Humidity
In August, Philadelphia averages 130 mm (5.1 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 13 hours 17 minutes of daylight, with the sun shining for approximately 9 hours 54 minutes each day. Additionally, there is a 42% probability of sunny days during this period.
Precipitation
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Chance of sun
In August, the UV Index in Philadelphia reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 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 | 3 | 6 | 8 | 10 | 11 | 10 | 8 | 5 | 3 | 1 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 30 min | 45 min | |||||