SeasonMapCharleston vs Philadelphia in September
Philadelphia is the better pick in September — 81 vs 69 on SeasonMap's comfort score. Philadelphia is warm, rainy, clean air, while Charleston is hot, rainy, clean air.
Charleston vs Philadelphia — September climate, side by side
| Charleston | Philadelphia | |
|---|---|---|
| Comfort score | 69/100 (C) | 81/100 (A) |
| Feels-like high | 32°C | 28°C |
| Avg high / low | 29° / 23° | 27° / 18° |
| Rainfall | 142 mm | 101 mm |
| Rainy days | 6 | 7 |
| Humidity | 80% | 72% |
| Air quality (AQI) | 46 | 45 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
Charleston vs Philadelphia in September — FAQ
- Is September better in Charleston or Philadelphia?
- Philadelphia is the better pick in September — 81 vs 69 on SeasonMap's comfort score. Philadelphia is warm, rainy, clean air, while Charleston is hot, rainy, clean air.
- What is the weather like in Charleston vs Philadelphia in September?
- In September, Charleston averages 29°C high / 23°C low with about 142 mm of rain; Philadelphia averages 27°C high / 18°C low with about 101 mm.