🇺🇸 Philadelphia vs 🇦🇺 Sydney
Weather Comparison
Current Weather Right Now
🇺🇸
Philadelphia
60°F
Moderate Rain
Feels like 60°F
H 61°F / L 57°F
Humidity: 94%
🇦🇺
Sydney
59°F
Scattered Clouds
Feels like 58°F
H 59°F / L 58°F
Humidity: 91%
Climate Overview
Philadelphia
Philadelphia in the Delaware River valley has a humid subtropical climate transitioning to continental. The city's urban heat island is intense — dense rowhouse neighborhoods without significant green space are among the East Coast's most heat-vulnerable. The Delaware and Schuylkill Rivers provide some humidity while the Piedmont hills to the north create varied terrain.
Sydney
Humid subtropical — warm summers, mild winters, year-round sunshine
Sydney enjoys one of the world's best climates. Summers are warm with beach weather; winters are mild enough for outdoor activities. The city is split between coastal suburbs (cooled by sea breezes) and inland western suburbs (dramatically hotter in summer).
Seasonal Comparison
| Season | 🇺🇸 Philadelphia | 🇦🇺 Sydney |
|---|---|---|
| Spring | — | 60–73°F September–November |
| Summer | — | 72–82°F December–February |
| Fall | — | 62–75°F March–May |
| Winter | — | 50–63°F June–August |
Philadelphia vs Sydney: Frequently Asked Questions
Does Philadelphia or Sydney have better weather?
Philadelphia and Sydney have very different climates. Philadelphia in the Delaware River valley has a humid subtropical climate transitioning to continent Sydney: Humid subtropical — warm summers, mild winters, year-round sunshine. The best city depends on your preferred season and temperature range.
When is the best time to visit Philadelphia vs Sydney?
Best time for Philadelphia: spring and fall. Best time for Sydney: September, October, November, March, April.