🇺🇸 Allentown vs 🇦🇺 Sydney
Weather Comparison
Current Weather Right Now
🇺🇸
Allentown
54°F
Overcast Clouds
Feels like 53°F
H 56°F / L 52°F
Humidity: 86%
🇦🇺
Sydney
57°F
Overcast Clouds
Feels like 57°F
H 58°F / L 54°F
Humidity: 91%
Climate Overview
Allentown
Allentown in the Lehigh Valley south of the Blue Mountain Ridge has a sheltered climate with less precipitation than the coastal plain. The Blue Mountain blocks some northwesterly cold air creating slightly milder conditions. The Lehigh River creates valley humidity and the dense urban core has significant heat island effects.
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 | 🇺🇸 Allentown | 🇦🇺 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 |
Allentown vs Sydney: Frequently Asked Questions
Does Allentown or Sydney have better weather?
Allentown and Sydney have very different climates. Allentown in the Lehigh Valley south of the Blue Mountain Ridge has a sheltered climate with less pr 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 Allentown vs Sydney?
Best time for Allentown: spring and fall. Best time for Sydney: September, October, November, March, April.