Kauai in December
December in Kauai brings highs around 79°F (26°C), lows near 69°F and about 18 rainy days. The sun sets around 5:57 pm. The sea is about 77°F (25°C). It's a fair month: plan indoor backups.
Photo: Jim Bahn, CC BY 2.0
What December is good for in Kauai
Each activity rated for December's weather and sea.
December next to November and January
| Month | November | December | January |
|---|---|---|---|
| High | 81°F (27°C) | 79°F (26°C) | 79°F (26°C) |
| Low | 71°F (22°C) | 69°F (20°C) | 66°F (19°C) |
| Rainy days | 18 | 18 | 12 |
| Sea | 79°F | 77°F | 76°F |
| Sunset | 5:55 pm | 5:57 pm | 6:15 pm |
| Daylight | 11 h 05 min | 10 h 48 min | 10 h 56 min |
Averages for Lihue Airport, Hawaii, 1991–2020; sunrise and sunset on the 15th. Kauai water temperature by month.
Tours in Kauai
Kauai: NaPali Boat Tour on the Amelia KFrom $227View 
Kauai Chocolate Farm Tasting TourFrom $145View 
Kauai: Waimea Town, Wailua River Cruise & Fern Grotto TourFrom $279View
Tours from Viator. Good Outing may earn a commission when you book, at no cost to you.
Questions
Is December a good time to visit Kauai?
It's a fair month: plan indoor backups. The most comfortable months overall are January and February.
How hot is Kauai in December?
Average highs are about 79°F (26°C) and lows about 69°F (20°C).
Does it rain much in Kauai in December?
December averages 18 rainy days, against 19 in the wettest month.
How warm is the sea in Kauai in December?
About 77°F (25°C). Warm enough for long swims and snorkeling.
