‹ Lihue (Kauai) weather by month
Typical September weather
Lihue (Kauai)
Hawaii · September
85° days
75° nights
about 5 rainy days · 12½ hours of daylight · ocean 84°
What to pack
- Swimsuit
- Sunscreen
What September feels like
September is the island's best-kept month: kids are back in school and rates fall away. It's also the anniversary of Iniki, which every long-time resident can date to the day — the reason hurricane season gets taken seriously here rather than shrugged at.
Expect about 5 days with real rain — enough to notice, not enough to plan around. Full tropical humidity: mornings are your friend, and shade is currency.
Can you swim?
The ocean runs about 84° — bath-warm.
The numbers
| Typical high | 85° |
|---|---|
| Typical low | 75° |
| Days with real rain | 5 |
| Total rain | 2.2 in |
| Humidity | tropical |
| Water temperature | 84° |
| Sunrise / sunset (mid-month) | 6:24 am / 6:40 pm |