September weather forecastKahakuloa, HI
September
Weather in September
The first month of the autumn, September, is still a warm month in Kahakuloa, Hawaii, with an average temperature fluctuating between 76.3°F (24.6°C) and 79.7°F (26.5°C).Temperature
September, known for its average high temperature of 79.7°F (26.5°C) and an average low temperature of 76.3°F (24.6°C), is the warmest month.Humidity
The months with the lowest humidity in Kahakuloa are January through March, September and November, with an average relative humidity of 75%.Rainfall
In Kahakuloa, in September, during 8.5 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. In Kahakuloa, during the entire year, the rain falls for 112.6 days and collects up to 7.91" (201mm) of precipitation.Daylight
In Kahakuloa, Hawaii, the average length of the day in September is 12h and 15min.On the first day of the month, sunrise is at 6:10 am and sunset at 6:41 pm. On the last day of September, in Kahakuloa, sunrise is at 6:17 am and sunset at 6:14 pm HST.
Sunshine
In September, the average sunshine is 9.4h.UV index
July through October, with an average maximum UV index of 7, are months with the highest UV index in Kahakuloa. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: During September, 7 as the daily maximum UV index converts into the following advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kahakuloa, HI
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is September (79.7°F).
The month with the lowest average high temperature is February (73.9°F).
- Average low temperature in September: 76.3°F
The months with the highest average low temperature are August and October (76.5°F).
The coldest month (with the lowest average low temperature) is March (70.7°F).
Average pressure in September
Kahakuloa, HI
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in September
Kahakuloa, HI
- Average wind speed in September: 11.8mph
The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.6mph).
Average humidity in September
Kahakuloa, HI
- Average humidity in September: 75%
The month with the highest relative humidity is July (77%).
The months with the lowest relative humidity are January, February, March, September and November (75%).
Average rainfall in September
Kahakuloa, HI
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is March (1.1").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in September
Kahakuloa, HI
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is November (7.7 days).
Average daylight in September /
Average sunshine in September
Kahakuloa, HI
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Kahakuloa, HI
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is March (12.6 days).
Average UV index in September
Kahakuloa, HI
- Average UV index in September: 7
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in September
Kahakuloa, HI
- Average cloud cover in September: 25
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility in September
Kahakuloa, HI
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
