Key West weather in October
October in Key West: hot, rainy, with clean air — an excellent time to visit.
#9 of 12 months in Key West · #248 of 604 destinations to visit in October · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Key West climate normals — October
| Daytime high | 28°C / 82°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 79°F | |
| Feels like (high) | 31°C / 88°F | |
| Rainfall | 102 mm / 4 in | 🌧 rainy |
| Rainy days | 14 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | 22°C / 71°F | |
| Sunshine | 10 h/day | |
| Daylight | 11.6 h | |
| Wind | 27 km/h / 17 mph | |
| Air quality (US AQI) | 42 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Key West in October — FAQ
- Is October a good time to visit Key West?
- October in Key West: hot, rainy, with clean air — an excellent time to visit. It ranks #9 of 12 months for Key West on SeasonMap's comfort score (81/100).
- What is the weather like in Key West in October?
- In October, Key West averages a daily high of 27.8°C and a low of 26.2°C, with about 101.6 mm of rain over roughly 14.2 rainy days.
- What is the air quality in Key West in October?
- Key West has a mean US Air Quality Index of about 42 in October.