Weather by month
Lihue (Kauai)
Hawaii
Kauai wrings the rain out of the trade winds, so the island stays green all year and the showers rarely last long enough to change your plans.
The best time to come
May, June, and September are the sweet spot — the drier half of the year, warm water, and shoulder rates on either side of the summer rush. Winter is wetter and the north-shore surf gets serious, but the island is at its greenest and the whales are in.
The year at a glance
| Month | Highs / lows | Temperature range | Wet days | Water |
|---|---|---|---|---|
| January | 79° / 66° | 4 | 80° | |
| February | 78° / 66° | 5 | 78° | |
| March | 79° / 67° | 6 | 79° | |
| April | 80° / 70° | 5 | 80° | |
| May ● | 82° / 71° | 4 | 81° | |
| June ● | 83° / 73° | 5 | 83° | |
| July | 85° / 75° | 5 | 83° | |
| August | 85° / 75° | 5 | 84° | |
| September ● | 85° / 75° | 5 | 84° | |
| October | 84° / 74° | 5 | 84° | |
| November | 81° / 71° | 7 | 82° | |
| December | 79° / 69° | 7 | 80° |
Lihue (Kauai) facts
- Sits at about 100 ft above sea level.
- 36.2 in of rain in a typical year, with March the wettest month.
- September runs hottest (85° afternoons); January nights are the coldest (66°).