Kauai weather in October
October in Kauai: warm, a little rain, with clean air — an excellent time to visit.
#7 of 12 months in Kauai · #123 of 604 destinations to visit in October · comfort 86/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Kauai climate normals — October
| Daytime high | 25°C / 78°F | 🌤 warm |
|---|---|---|
| Nighttime low | 21°C / 69°F | |
| Feels like (high) | 28°C / 82°F | |
| Rainfall | 63 mm / 2.5 in | 🌦 some rain |
| Rainy days | 17 days | |
| Humidity | 77% | 💦 very humid |
| Dew point | 18°C / 65°F | |
| Sunshine | 10.5 h/day | |
| Daylight | 11.6 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 21 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Kauai?
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Kauai in October — FAQ
- Is October a good time to visit Kauai?
- October in Kauai: warm, a little rain, with clean air — an excellent time to visit. It ranks #7 of 12 months for Kauai on SeasonMap's comfort score (86/100).
- What is the weather like in Kauai in October?
- In October, Kauai averages a daily high of 25.4°C and a low of 20.6°C, with about 62.6 mm of rain over roughly 16.6 rainy days.
- What is the air quality in Kauai in October?
- Kauai has a mean US Air Quality Index of about 21 in October.