August Weather in Philadelphia

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%.

18°C (65°F)

Minimum temperature

27°C (80°F)

Average temperature

35°C (96°F)

Maximum temperature

77%

Humidity

Precipitation and Sunshine hours

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.

130 mm (5.1 inches)

Precipitation

14 rainy days

Rainy days

9 hours 54 minutes

Sunshine hours

42%

Chance of sun

UV Index

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.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  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

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