Kauai County weather
Our guide to the weather in Kauai County during September
We've looked at the most up-to-date weather data for Kauai County, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Kauai County weather in September.
How warm is it in Kauai County during September?
September is typically the hottest month in Kauai County. The temperature hits about 27℃ during the day, falling away to a balmy 25℃ at night. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.
Does it rain in Kauai County during September?
September is typically the driest month in Kauai County. On average, there will be 2 rainy days during the month, amounting to 78.4mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. You're not likely to see a thunderstorm during your trip.
Is it windy in Kauai County during September?
You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during September. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.
Kauai County Blog posts
From the UK's most popular travel bloggers
The most unforgettable things to do in Kauai
21st January 2021 by PommieTravels
The island of Kauai in Hawaii is the fourth largest and second-oldest, geographically speaking, of the Hawaiian islands. Stretching 169 kilometres across, it ranks as the 21st largest island in the United States of America. It is home to the Waimea Canyon State Park, also known as the Grand Canyon of the Pacific. The Park features Mount Wai’ale’ale, which receives extreme amounts of rainfall and is recorded as one of the wettest places on earth. Kauai is also known as the “Garden...
Weather in Kauai County
Our month-by-month guide to the weather and climate in Kauai County
Kauai County weather in
JanuaryKauai County weather in
FebruaryKauai County weather in
MarchKauai County weather in
AprilKauai County weather in
MayKauai County weather in
JuneKauai County weather in
JulyKauai County weather in
AugustKauai County weather in
SeptemberKauai County weather in
OctoberKauai County weather in
NovemberKauai County weather in
December