Temperature in Kauai in September

Daytime highs, nighttime lows and the warmest cities in Kauai, the United States of America this September.

Kauai, the United States of America, a region in the United States of America, typically experiences warm weather in September, with maximum daytime temperatures around 28°C (82°F) and nighttime temperatures around 24°C (75°F) in Princeville. In Kauai, the United States of America, September typically stands out as the hottest month of the year. If you're planning a visit during this time, it would be wise to come prepared. Packing light and breathable summer cloths will ensure you stay comfortable throughout your stay.

What is the temperature of the different cities in Kauai, the United States of America in September?

Discover the typical September temperatures for the most popular locations of Kauai on the map below. Detailed insights are just a click away.

Select a Month

Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Kauai, check out our Kauai's climate page.

See also: Kauai weather by month.

Best Places to Visit in Kauai in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Kauai.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

See all September weather averages, cities and regions in Kauai

Kauai temperatures in September: frequently asked questions

How hot does it get in Kauai, the United States of America in September?

Daytime temperatures in Princeville typically peak at 28°C (82°F) in September, putting it in the high range.

How cold does it get at night in Kauai, the United States of America in September?

Princeville sees nighttime lows close to 24°C (75°F) in September.

How much sun does Kauai, the United States of America get in September?

Princeville usually sees around 242 hours of sunlight, indicating many sunny days.

What is the water temperature in September?

The water temperature averages approximately 27°C (81°F) in Lihue this month, a perfect temperature for swimming and cooling off.

Interested in more climate information?

We have much more information about the climate in Kauai.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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