Kapolei Weather in September

September in Kapolei typically sees daytime highs of 28°C (82°F) and nighttime lows of 25°C (77°F). Expect some rainfall during the month.

Rainfall in Kapolei in September

This month experiences about 9 days of rain according to historical data, averaging 19 mm (0.7 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Kapolei in September

September is one of the better months to visit Kapolei. Expect 28°C (82°F) during the day and 25°C (77°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. At 25°C (77°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference. On average, it is the warmest month of the year.

Sunshine in Kapolei in September

The days are predominantly sunny, with an estimated total of around 279 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Wind Speed in Kapolei in September

September sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

Average water temperature in September

The water temperature is 27°C (81°F), which most people find very comfortable. A good month for swimming and water sports.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Kapolei's climate page.

Kapolei Temperature in September

Min Temperature 25°C (77°F)  

Max Temperature 28°C (82°F)  

Water Temperature 27°C (81°F) *  

Chance of Rain 30%  

Precipitation 19 mm (0.7 in)  

Rainy days 9 days  

Humidity 66% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 279 hours *  

Percentage Sunshine 76% *  

* Data from: Honolulu, the United States of America (15 KM, 9 Miles).

What to Wear in Kapolei in September

Warm but pleasant conditions in Kapolei in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. The water temperature sits at about 27°C (81°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Kapolei in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Kapolei's climate page.

More climate data for Kapolei

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Kapolei climate overview or explore weather in the United States of America.