Philadelphia, Pennsylvania Weather in August

August heat

Philadelphia feels hot and sticky in August, with daytime highs around 30°C and humid afternoons. Rain can arrive in heavy showers, so a sunny morning may not last all day. It's not the easiest month for long walks between Old City sights.

Visit Independence Hall and the Liberty Bell early, then spend the hotter hours inside the Barnes Foundation or Reading Terminal Market. Save a Schuylkill River Trail stroll for the cooler evening. July is just as hot and slightly wetter; September is cooler and drier.

Events and crowds

August doesn't have a major citywide holiday. Labor Day falls in early September, so don't count on a long-weekend event during the month. Summer concerts at the Mann Center for the Performing Arts are one local option; check the schedule for your dates.

Tourist areas like Old City stay busy, especially around Independence Hall. Families are still travelling during school break, and summer demand can keep hotel prices higher than in May or October. The heat and showers may make August less comfortable than those popular shoulder-season months.

Making the most of it

If you hate crowds, head to the Schuylkill River Trail in the evening instead of joining the midday queues at the Liberty Bell. Travelling with kids? The Franklin Institute gives you an indoor break when the afternoon turns muggy.

A useful local trick: take SEPTA's Market-Frankford Line to 2nd Street for Old City, then use the underground station entrances to get out of sudden downpours. At Reading Terminal Market, you can pause over a roast pork sandwich while rain passes. Don't plan a whole day around outdoor sightseeing; August showers and sticky heat can wear you down.