Philadelphia weather in August 2025

Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Philadelphia in August. Check more long-term weather averages for Philadelphia in August before you book your next holiday to Pennsylvania in 2025/2026.

  • 29°C maximum daytime temperature in August in Philadelphia29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in August in Philadelphia9
    9 days with some rainfall
  • 19°C minimum night-time temperature in August in Philadelphia19
    19°C min night temperature
  • 14 hours of daylight per day in August in Philadelphia14
    14 hours of daylight per day
  • Moderate heat & humidity in August in PhiladelphiaM
    Moderate heat & humidity
  • 102 mm monthly rainfall in August in Philadelphia102
    102 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Philadelphia8
    8 (Very High) UV index

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The August weather guide for Pennsylvania (Philadelphia) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Philadelphia in August?

Daytime temperatures usually reach 29°C in Philadelphia in August with moderate heat and humidity, falling to 19°C at night.

How sunny is it in Philadelphia in August?

There are normally 8 hours of bright sunshine each day in Philadelphia in August - that's 61% of daylight hours.

Does it rain in Philadelphia in August?

There are usually 9 days with some rain in Philadelphia in August and the average monthly rainfall is 102mm.

What is the chance of a hurricane in Philadelphia in August?

On average less than 1 day in August in Philadelphia is likely to be affected by the passage of one or more tropical storms.

Philadelphia August sunrise & sunset times

Browse the sunrise and sunset times for Philadelphia in August 2025. Select a month to view Philadelphia sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:59 19:14
Saturday, 16th August 2025 05:14 18:55
Sunday, 31st August 2025 05:28 18:33

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