Do I need a jacket in Philadelphia in August?

Probably not for daytime — highs average around 85°F. A light layer for air-conditioned interiors is enough.

Is August rainy in Philadelphia?

Expect roughly 9 days of rain across the month. Pack a compact umbrella and shoes that can handle wet pavement.

Daytime highs average around 85°F. Lean toward breathable fabrics like cotton and linen, and bring sun protection.

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Linen remains the best fabric for Philadelphia's 85°F August temperatures, providing maximum breathability in the Delaware Valley humidity.
Philadelphia's August highs of 85°F and persistent humidity make heavy pants miserable in neighborhoods like Fishtown and Northern Liberties — lightweight joggers in technical fabric wick sweat on humid city days.
Perfect for layering or wearing alone when Philadelphia's August humidity makes 85°F feel much hotter.
Philadelphia's August heat index of 85°F outdoors contrasts sharply with heavily air-conditioned SEPTA trains and Center City offices — a thin cardigan bridges the 20°F gap between outdoor humidity and indoor chill.

Knit sneakers allow for maximum airflow in Philadelphia's 85°F August heat while providing support for city walking.
Philadelphia's Delaware River waterfront reaches 85°F in August with high humidity — sturdy walking sandals provide airflow and grip for Penn's Landing promenades and South Street summer strolls.
With 9 days of rain, many of which are quick summer downpours, waterproof sandals are practical for Philadelphia.

Philadelphia's August sun beats down on outdoor lines at famous cheesesteak spots and historic sites at 85°F — a wide-brimmed straw hat provides shade where city blocks offer none.
Protects your phone from the 9 days of potential August thunderstorms in Philadelphia.
Stay hydrated during Philadelphia's 85°F August heat, especially if you are doing a lot of outdoor walking.

Philadelphia's August subway stations trap heat well above the 85°F street temperature — a small handheld fan provides relief waiting for SEPTA trains and during outdoor waits at popular Fishtown and Old City venues.
Maximum sun protection is smart for exploring Philadelphia's sprawling Fairmount Park in 85°F weather.
Philadelphia's August highs of 85°F combined with Delaware Valley humidity make hydration critical — a large insulated bottle is essential for any day walking between neighborhoods like Fishtown and Old City.

August is a great time to enjoy the many outdoor beer gardens in Philadelphia, like the PHS Pop Up Gardens.

Check the schedule for the Delaware River Waterfront's summer movie nights and festivals in Philadelphia.

Philadelphia's 'Philly Free Streets' events sometimes happen in August; check for car-free walking opportunities.

Probably not for daytime — highs average around 85°F. A light layer for air-conditioned interiors is enough.
Expect roughly 9 days of rain across the month. Pack a compact umbrella and shoes that can handle wet pavement.
Daytime highs average around 85°F. Lean toward breathable fabrics like cotton and linen, and bring sun protection.
Philadelphia's 'Philly Free Streets' events sometimes happen in August; check for car-free walking opportunities.

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