Kauai month by month
Plan your visit to Kauai by month. Compare weather, crowds, events, and prices across all twelve months with historical climate data.
- January
- High
- 15°C
- Low
- 8°C
- Rain
- 210 mm
January on Kauai means paying peak-season rates during the island's wettest quarter. Daytime highs typically reach about 25.6°C (78°F) and overnight lows settle near 18.3°C (65°F),…
- February
- High
- 15°C
- Low
- 8°C
- Rain
- 218 mm
February on Kauai is defined by rain. Showers roll in off the Pacific on most days, sometimes for 20 minutes, sometimes for hours, and the air carries the smell of wet red earth…
- March
- High
- 15°C
- Low
- 9°C
- Rain
- 298 mm
The single most important thing to know about March on Kauai is that you will pay peak-adjacent rates for some of the island's wettest weather. This is the second-rainiest month…
- April
- High
- 15°C
- Low
- 9°C
- Rain
- 386 mm
April sits at the tail end of Kauai's wet season, and rain shapes the rhythm of every day on the island. Showers fall on roughly 17 to 20 days, often as brief tropical downpours…
- May
- High
- 16°C
- Low
- 10°C
- Rain
- 293 mm
May on Kauai marks the transition from the wetter winter months into the drier summer pattern. Highs average 28.3°C (83°F) and lows settle around 22.1°C (72°F), warm enough for…
- June
- High
- 17°C
- Low
- 11°C
- Rain
- 221 mm
June sits in a narrow window on Kauai where the heaviest spring rains have receded. April is the island's wettest month by a wide margin at 386mm, and by June the daily downpours…
- July
- High
- 17°C
- Low
- 12°C
- Rain
- 268 mm
July on Kauai is the island at its warmest and its most crowded. Average highs reach about 29°C (84°F) with lows near 23°C (73°F), and steady northeast trade winds keep the…
- August
- High
- 18°C
- Low
- 12°C
- Rain
- 181 mm
August on Kauai brings the driest weather this island offers all year, and on a place where Mount Waialeale regularly receives over 11,000mm of annual rainfall, that distinction…
- September
- High
- 18°C
- Low
- 12°C
- Rain
- 195 mm
The single most important thing about September on Kauai is timing. The first Monday of the month is Labor Day, and the difference between the week before and the week after is…
- October
- High
- 17°C
- Low
- 11°C
- Rain
- 218 mm
October on Kauai means rain. Not the occasional tropical afternoon shower you can wait out under a lanai, but measurable precipitation on roughly 27 of the month's 31 days. Most of…
- November
- High
- 16°C
- Low
- 10°C
- Rain
- 229 mm
November marks the onset of Kauai's wet season, and the island does not ease you into it. Expect daytime highs around 27.8°C (82°F) with overnight lows near 21.1°C (70°F), warm…
- December
- High
- 15°C
- Low
- 9°C
- Rain
- 290 mm
December on Kauai means rain. Expect around 290mm across roughly 26 days of the month, with the north shore near Hanalei and Princeville catching the heaviest downpours. Daytime…