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
September commences with an average high-temperature of a still warm 75.2°F (24°C), showing little deviation from August's 75.4°F (24.1°C). In Hawaiian Beaches, September's low temperatures hover around an agreeable 70°F (21.1°C), reflecting a minor decrease from the daytime highs.Humidity
In Hawaiian Beaches, the average relative humidity in September is 79%.Rainfall
In Hawaiian Beaches, in September, it is raining for 19.2 days, with typically 1.81" (46mm) of accumulated precipitation. In Hawaiian Beaches, during the entire year, the rain falls for 227.7 days and collects up to 27.83" (707mm) of precipitation.Daylight
The average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 6:04 am and sunset at 6:34 pm. On the last day of September, sunrise is at 6:10 am and sunset at 6:08 pm HST.
Sunshine
In September, the average sunshine in Hawaiian Beaches is 8.8h.UV index
May through December, with an average maximum UV index of 6, are months with the highest UV index in Hawaiian Beaches. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 6 suggests this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hawaiian Beaches in September?
What is the average humidity in September in Hawaiian Beaches?
How much does it rain in Hawaiian Beaches in September?
What is the average length of the day in September in Hawaiian Beaches?
What time are sunrise and sunset in September in Hawaiian Beaches?
How many hours of sunshine does Hawaiian Beaches have in September?
What is the month with the highest UV index in Hawaiian Beaches?
What is the UV index reading in September in Hawaiian Beaches?
Average temperature in September
Hawaiian Beaches, HI
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is March (69.6°F).
- Average low temperature in September: 70°F
The month with the highest average low temperature is September (70°F).
The coldest month (with the lowest average low temperature) is March (64°F).
Average pressure in September
Hawaiian Beaches, HI
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in September
Hawaiian Beaches, HI
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is August (7.6mph).
The calmest month (with the lowest average wind speed) is October (6.7mph).
Average humidity in September
Hawaiian Beaches, HI
- Average humidity in September: 79%
The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are January, May, June and July (78%).
Average rainfall in September
Hawaiian Beaches, HI
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is June (1.1").
Average rainfall days in September
Hawaiian Beaches, HI
- Average rainfall days in September: 19.2 days
The month with the highest number of rainy days is March (22.9 days).
The month with the least rainy days is January (13.3 days).
Average daylight in September /
Average sunshine in September
Hawaiian Beaches, HI
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Hawaiian Beaches, HI
- Average sunshine days in September: 2.5 days
The month with the most sunshine days is January (12.1 days).
The month with the least sunshine days is August (1.8 days).
Average UV index in September
Hawaiian Beaches, HI
- Average UV index in September: 6
The months with the highest UV index are May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March and April (UV index 5).
Average cloud cover in September
Hawaiian Beaches, HI
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in September
Hawaiian Beaches, 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).
Hawaiian Beaches, Hawaii, USA
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