SeasonMapNapa vs San Francisco in September
San Francisco is the better pick in September — 96 vs 88 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Napa is hot, dry, clean air.
Napa vs San Francisco — September climate, side by side
| Napa | San Francisco | |
|---|---|---|
| Comfort score | 88/100 (A) | 96/100 (S) |
| Feels-like high | 30°C | 21°C |
| Avg high / low | 30° / 13° | 22° / 14° |
| Rainfall | 5 mm | 3 mm |
| Rainy days | 1 | 1 |
| Humidity | 59% | 75% |
| Air quality (AQI) | 34 | 35 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
Napa vs San Francisco in September — FAQ
- Is September better in Napa or San Francisco?
- San Francisco is the better pick in September — 96 vs 88 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Napa is hot, dry, clean air.
- What is the weather like in Napa vs San Francisco in September?
- In September, Napa averages 30°C high / 13°C low with about 5 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.