Kauai weather in September
Mild and comfortable, with frequent heavy rain. Average highs of 24°C and lows of 18°C, with around 24 rainy days expected throughout the month.
While September isn't our top-rated month for Kauai, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
24°C
Average low
18°C
Rainy days
24 days
Best months to visit
Year-round
What to do in Kauai in September
Whatever the weather, Kauai rewards curious visitors. Here are some of the best ways to spend your time:
Explore
Dine
Culture
Nature
Shopping
Day trips
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
21C
Mild and comfortable, with regular rainfall.
February
20C
Mild and comfortable, with regular rainfall.
March
21C
Mild and comfortable, with frequent heavy rain.
April
21C
Mild and comfortable, with frequent heavy rain.
May
22C
Mild and comfortable, with frequent heavy rain.
June
23C
Mild and comfortable, with frequent heavy rain.
July
24C
Mild and comfortable, with frequent heavy rain.
August
24C
Mild and comfortable, with frequent heavy rain.
September (you are here)
24C
Mild and comfortable, with frequent heavy rain.
October
24C
Mild and comfortable, with frequent heavy rain.
November
22C
Mild and comfortable, with frequent heavy rain.
December
21C
Mild and comfortable, with frequent heavy rain.
Book your September trip to Kauai
Find hotels, tours and experiences for the perfect escape.
