Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August and September represent the warmest period, with an average high-temperature of 82°F (27.8°C).Heat index
The average heat index in August is calculated to be a tropical 87.8°F (31°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
In Waimalu, the average relative humidity in August is 75%.Rainfall
In Waimalu, in August, during 16.8 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Waimalu, during the entire year, the rain falls for 208.4 days and collects up to 16.5" (419mm) of precipitation.Ocean temperature
The months with the warmest seawater are August through October, with an average ocean temperature of 80.6°F (27°C).Note: Water temperature ranging from 77°F (25°C) to 84.2°F (29°C) is seen as very warm and delightful by everyone. During these temperatures, water activities become enjoyable, without causing discomfort for extended periods.
Daylight
In August, the average length of the day is 12h and 50min.On the first day of August, sunrise is at 6:05 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 6:48 pm HST.
Sunshine
In Waimalu, the average sunshine in August is 8.3h.UV index
The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 6 in August suggests the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the warmest months?
What are the temperatures in August?
What is the average humidity in August?
How much does it rain in August?
What months are the ocean warmest?
What is the water temperature in August?
What is the average length of the day in August?
When is the sunrise / sunset in August?
How many hours of sunshine does Waimalu have in August?
When is the lowest UV index?
What is the UV index reading in August?
Average temperature in August
Waimalu, HI
- Average high temperature in August: 82°F
The warmest months (with the highest average high temperature) are August and September (82°F).
The months with the lowest average high temperature are February and March (75.4°F).
- Average low temperature in August: 74.8°F
The month with the highest average low temperature is September (75°F).
The coldest month (with the lowest average low temperature) is February (68°F).
Average pressure in August
Waimalu, HI
- Average pressure in August: 29.98"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 August
Waimalu, HI
- Average wind speed in August: 10.6mph
The windiest month (with the highest average wind speed) is July (11.3mph).
The calmest month (with the lowest average wind speed) is January (8.4mph).
Average humidity in August
Waimalu, HI
- Average humidity in August: 75%
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, June and September (74%).
Average rainfall in August
Waimalu, HI
- Average rainfall in August: 1.02"
The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is July (0.71").
Average rainfall days in August
Waimalu, HI
- Average rainfall days in August: 16.8 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is January (13.5 days).
Average sea temperature in August
Waimalu, HI
- Average sea temperature in August: 81°F
The best months for swimming (with the highest average sea temperature) are August, September and October (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).
Average daylight in August /
Average sunshine in August
Waimalu, HI
- Average daylight in August: 12h and 5min
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 August: 8h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).
Average sunshine days in August
Waimalu, HI
- Average sunshine days in August: 8.7 days
The month with the most sunshine days is January (12.3 days).
The month with the least sunshine days is November (6.2 days).
Average UV index in August
Waimalu, HI
- Average UV index in August: 6
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover in August
Waimalu, HI
- Average cloud cover in August: 40
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 36).
Average visibility in August
Waimalu, HI
- Average visibility in August: 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).
Waimalu, Hawaii, USA
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