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Kauai weather in September

Thinking about venturing to Kauai this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Kauai in September?

Kauai is a region in the United States of America. September in Kauai generally has warm temperatures, with moderate precipitation.

You can expect warm maximum daytime temperatures of around 28°C and nighttime temperatures around 24°C in Princeville. On average, September is the warmest month of the year in Kauai. So be prepared and pack summer clothes.

In September, precipitation varies across different areas. From moderate rainfall in Koloa with an average of 46 mm to moderate rainfall in Kapaa with 65 mm. Going by our weather data, this month in Princeville usually has the least rain, making it the driest month of the year. The days are mostly sunny, with an average total of around 242 hours of sunshine in Princeville. The sunlight during this month doesn't just make the days brighter, it also seems to make everyone a bit more cheerful.

To learn more about the conditions in specific areas of Kauai in September, check out the map below. For more details on the yearly weather, visit our Kauai climate page.

Where to go in Kauai in September

Find more information for the most popular destinations in the Kauai on the map below. Click on a destination dot for more detailes.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in September for the 5 most popular destinations in Kauai?

Princeville

In September Princeville generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 24°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Princeville
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
24°C 
263 hours 
49 mm 
17 days 
28°C 
24°C 
242 hours 
49 mm 
16 days 
October   >> October
>>  
27°C 
24°C 
209 hours 
68 mm 
18 days 
Climate in Princeville

Koloa

In September Koloa generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 24°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Koloa
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
24°C 
263 hours 
45 mm 
17 days 
28°C 
24°C 
242 hours 
46 mm 
16 days 
October   >> October
>>  
27°C 
23°C 
209 hours 
65 mm 
17 days 
Climate in Koloa

Kapaa

In September Kapaa generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 24°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Kapaa
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
24°C 
263 hours 
69 mm 
17 days 
28°C 
24°C 
242 hours 
65 mm 
16 days 
October   >> October
>>  
27°C 
23°C 
209 hours 
81 mm 
18 days 
Climate in Kapaa

Lihue

In September Lihue generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 24°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Lihue
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
24°C 
263 hours 
67 mm 
17 days 
28°C 
24°C 
242 hours 
64 mm 
16 days 
October   >> October
>>  
27°C 
23°C 
209 hours 
80 mm 
18 days 
Climate in Lihue

Hanalei

In September Hanalei generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 24°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Hanalei
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
24°C 
263 hours 
49 mm 
17 days 
28°C 
24°C 
242 hours 
49 mm 
16 days 
October   >> October
>>  
27°C 
23°C 
209 hours 
68 mm 
18 days 
Climate in Hanalei

Is your destination not in the list? Have a look at other destinations in Kauai, in the United States of America.

Is September the best time to visit Kauai?

Given the typically perfect weather conditions in Princeville, September might be a good time to visit Kauai. However, the weather conditions may vary depending on your destination.

Generally speaking, the best visiting conditions can be found in offering mostly perfect weather in Princeville.

Interested in more climate information?

We have much more information about the climate in Kauai. Interested in the weather conditions in a specific month? Select the month below.

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  • 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 climate conditions. Find out where to go with our weather planner.