Temperature
Warm by day, warm at night.
Warm days and some sun. Humid air is the main drawback.
Warm by day, warm at night.
Rain is frequent. About 16 wet days, the highest monthly average.
Good sunshine this month.
Warm days, with humid periods.
In October, afternoons feel about 84° and nights feel near 79°.
Partly cloudy skies this month.
Calm winds are typical in October.
October late afternoons are around 80°F, easing to about 77°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 76 | 68 | 2.6 | 10 | 6.1 | 80 | 76 |
| Feb | 75 | 68 | 2.3 | 10 | 5.8 | 79 | 76 |
| Mar | 76 | 68 | 3.4 | 13 | 5.7 | 79 | 76 |
| Apr | 77 | 69 | 2.1 | 15 | 6.3 | 80 | 76 |
| May | 79 | 71 | 2.4 | 15 | 7.6 | 79 | 77 |
| Jun | 80 | 73 | 2.2 | 15 | 7.9 | 79 | 79 |
| Jul | 81 | 74 | 2.2 | 16 | 8.1 | 79 | 79 |
| Aug | 82 | 74 | 2.3 | 15 | 8.0 | 79 | 80 |
| Sep | 82 | 74 | 2.2 | 16 | 7.6 | 79 | 81 |
| Oct | 81 | 74 | 2.8 | 16 | 6.0 | 80 | 80 |
| Nov | 79 | 72 | 2.8 | 14 | 5.4 | 81 | 79 |
| Dec | 77 | 70 | 3.4 | 13 | 5.8 | 81 | 77 |
Similar climates
Want a side-by-side climate view? Compare Kauai with Big Island.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 29, 2026
Data & methodology