Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In September, the average high-temperature is almost the same as in August - a still moderately hot 78.3°F (25.7°C). The average low-temperature, in Kalaoa, is 74.8°F (23.8°C).Humidity
The average relative humidity in September in Kalaoa is 76%.Rainfall
In Kalaoa, during 13.4 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Kalaoa, during the entire year, the rain falls for 136 days and collects up to 8.5" (216mm) of precipitation.Daylight
The average length of the day in September in Kalaoa is 12h and 14min.On the first day of September in Kalaoa, sunrise is at 6:08 am and sunset at 6:39 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 6:13 pm HST.
Sunshine
In Kalaoa, the average sunshine in September is 9.5h.UV index
January through December, with an average maximum UV index of 6, are months with the highest UV index in Kalaoa. The months with the lowest UV index in Kalaoa are January through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
FAQ
What is the temperature in September in Kalaoa?
What is the average humidity in September in Kalaoa?
How many days does it rain in September in Kalaoa?
What is the average length of the day in September in Kalaoa?
What time are sunrise and sunset in September in Kalaoa?
How long on average sun shines in September in Kalaoa?
What is the month with the highest UV index in Kalaoa?
What are the months with the lowest UV index in Kalaoa?
What is the UV index intensity in September in Kalaoa?
Average temperature in September
Kalaoa, HI
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is February (73.2°F).
- Average low temperature in September: 74.8°F
The months with the highest average low temperature are August, September and October (74.8°F).
The coldest month (with the lowest average low temperature) is March (69.4°F).
Average pressure in September
Kalaoa, HI
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is April (30.04"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).
Average wind speed in September
Kalaoa, HI
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (6.2mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in September
Kalaoa, HI
- Average humidity in September: 76%
The months with the highest relative humidity are June, July and August (77%).
The month with the lowest relative humidity is February (71%).
Average rainfall in September
Kalaoa, HI
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Kalaoa, HI
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is February (8.1 days).
Average daylight in September /
Average sunshine in September
Kalaoa, HI
- Average daylight in September: 12h and 14min
The month with the longest days is June (Average daylight: 13h and 19min).
The month with the shortest days is December (Average daylight: 10h and 58min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).
Average sunshine days in September
Kalaoa, HI
- Average sunshine days in September: 8.3 days
The month with the most sunshine days is January (14.5 days).
The month with the least sunshine days is October (6.8 days).
Average UV index in September
Kalaoa, HI
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Kalaoa, HI
- Average cloud cover in September: 18
The months with the most cloud cover are April, May and June (Cloud cover 21).
The month with the least cloud cover is January (Cloud cover 12).
Average visibility in September
Kalaoa, 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).
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