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The Big Island weather in September

Planning a getaway to The Big Island this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What is the weather like in The Big Island in September?

The Big Island is a region in the United States of America. September in The Big Island generally has warm temperatures, with precipitation levels ranging from low to heavy.

The average maximum temperatures are warm and range from 23°C in Volcano to 28°C in Pahoa. Nighttime temperatures generally drop to 23°C in Pahoa and 18°C in Volcano.

In September, precipitation varies across different areas. From low rainfall in Hawi with an average of 30 mm to heavy rainfall in Captain Cook with 530 mm. Meanwhile, Kailua-Kona enjoys close to 260 hours of sunlight. This means it's a great month if you prefer bright and sunny days.

For a closer look at September's conditions in The Big Island, see the map below. For a more detailed look at The Big Island's yearly weather, check out our The Big Island climate page.

Where to go in The Big Island in September

Find the average weather conditions in September for the most popular destinations in The Big Island on the map below. Click on a destination dot for more detailed information.

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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 in The Big Island

What is the weather like in September for the 5 most popular destinations in The Big Island?

Average weather in Kailua-Kona

In September Kailua-Kona generally has high temperatures with maximum daytime temperatures around 26°C, minimum nighttime temperatures around 22°C and heavy monthly rainfall. So on average the conditions are poor that month.

Kailua-Kona
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
<<  
26°C 
22°C 
280 hours 
422 mm 
18 days 
poor 
26°C 
22°C 
260 hours 
356 mm 
16 days 
poor 
October   >> October
>>  
25°C 
22°C 
250 hours 
270 mm 
17 days 
poor 
Climate in Kailua-Kona

Average weather in Waikoloa

In September Waikoloa generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 20°C and heavy monthly rainfall. So on average the conditions are poor that month.

Waikoloa
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
<<  
27°C 
20°C 
280 hours 
341 mm 
19 days 
poor 
27°C 
20°C 
260 hours 
296 mm 
17 days 
poor 
October   >> October
>>  
26°C 
19°C 
250 hours 
222 mm 
18 days 
Climate in Waikoloa

Average weather in Hapuna Beach

In September Hapuna Beach generally has high temperatures with maximum daytime temperatures around 28°C, minimum nighttime temperatures around 21°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.

Hapuna Beach
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 
21°C 
280 hours 
272 mm 
19 days 
poor 
28°C 
21°C 
260 hours 
238 mm 
17 days 
October   >> October
>>  
27°C 
20°C 
250 hours 
181 mm 
18 days 
Climate in Hapuna Beach

Average weather in Kaupulehu

In September Kaupulehu generally has high temperatures with maximum daytime temperatures around 26°C, minimum nighttime temperatures around 22°C and heavy monthly rainfall. So on average the conditions are poor that month.

Kaupulehu
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
<<  
27°C 
22°C 
280 hours 
345 mm 
18 days 
poor 
26°C 
22°C 
260 hours 
302 mm 
16 days 
poor 
October   >> October
>>  
26°C 
22°C 
250 hours 
223 mm 
17 days 
Climate in Kaupulehu

Average weather in Kalaoa

In September Kalaoa generally has high temperatures with maximum daytime temperatures around 26°C, minimum nighttime temperatures around 22°C and heavy monthly rainfall. So on average the conditions are poor that month.

Kalaoa
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
<<  
26°C 
22°C 
280 hours 
400 mm 
18 days 
poor 
26°C 
22°C 
260 hours 
349 mm 
16 days 
poor 
October   >> October
>>  
26°C 
21°C 
250 hours 
256 mm 
17 days 
Climate in Kalaoa

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

Is September the best time to visit The Big Island?

Given the typically poor weather conditions in Kailua-Kona, September may not be the ideal time to visit The Big Island.

Generally speaking, January, February and December provide pleasant weather in Kailua-Kona. In contrast, April, May, June, July, August, September and October tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in The Big Island. 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.