September weather forecastEwa Villages, HI
September
Weather in September
September, the first month of the autumn in Ewa Villages, is also a moderately hot month, with an average temperature ranging between max 81.5°F (27.5°C) and min 76.3°F (24.6°C).Temperature
The peak of Ewa Villages's temperatures is noted during August and September, averaging a high-temperature of 81.5°F (27.5°C).Heat index
September's heat index is calculated to be a tropical 86°F (30°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.For clarity, heat index numbers account for light winds and areas under shade. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
The months with the lowest humidity are January, April through June, August through November, with an average relative humidity of 74%.Rainfall
In September, in Ewa Villages, the rain falls for 13.3 days. Throughout September, 0.83" (21mm) of precipitation is accumulated. In Ewa Villages, during the entire year, the rain falls for 172.2 days and collects up to 12.72" (323mm) of precipitation.Daylight
In September, the average length of the day in Ewa Villages, Hawaii, is 12h and 15min.On the first day of the month, sunrise is at 6:15 am and sunset at 6:47 pm. On the last day of September, sunrise is at 6:23 am and sunset at 6:20 pm HST.
Sunshine
In September, the average sunshine is 9.3h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 7 suggests these recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ewa Villages, HI
- Average high temperature in September: 81.5°F
The warmest months (with the highest average high temperature) are August and September (81.5°F).
The month with the lowest average high temperature is February (74.8°F).
- Average low temperature in September: 76.3°F
The months with the highest average low temperature are August and September (76.3°F).
The coldest month (with the lowest average low temperature) is February (69.4°F).
Average pressure in September
Ewa Villages, HI
- Average pressure in September: 29.97"Hg
The months with the highest atmospheric pressure are March and April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in September
Ewa Villages, HI
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is July (11.9mph).
The calmest months (with the lowest average wind speed) are January and October (9.1mph).
Average humidity in September
Ewa Villages, HI
- Average humidity in September: 74%
The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are January, April, May, June, August, September, October and November (74%).
Average rainfall in September
Ewa Villages, HI
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is March (1.77").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Ewa Villages, HI
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is March (18.1 days).
The month with the least rainy days is July (11.3 days).
Average daylight in September /
Average sunshine in September
Ewa Villages, 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 18min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days in September
Ewa Villages, HI
- Average sunshine days in September: 12.2 days
The months with the most sunshine days are July and August (15.3 days).
The month with the least sunshine days is March (6.8 days).
Average UV index in September
Ewa Villages, HI
- Average UV index in September: 7
The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, October, November and December (UV index 6).
Average cloud cover in September
Ewa Villages, HI
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in September
Ewa Villages, 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).
