August weather forecastWaipahu, HI
August
Weather in August
In August, Waipahu, Hawaii weather sustains the warm pattern, experiencing the peak of the summer season. There is a negligible increase in the maximum temperature from the previous month, hitting 82°F (27.8°C). While the days continue to be warm and sunny, there is a slight increase in rainfall, bringing with it occasional cloudy weather. Despite this, the sea temperature remains inviting, making it a great month for water-based activities. The wind speed in August, recording at 14mph (22.5km/h), ensures that the summer heat does not become overpowering.Temperature
Waipahu's highest average temperatures are recorded in August and September, reaching a high of 82°F (27.8°C).Heat index
Throughout August, the heat index is computed to be a tropical 87.8°F (31°C). If one continues to be active during exposure, it might cause tiredness and subsequent heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Humidity
The average relative humidity in August is 75%.Rainfall
In Waipahu, during August, the rain falls for 16.8 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Waipahu, Hawaii, during the entire year, the rain falls for 208.4 days and collects up to 16.5" (419mm) of precipitation.Ocean temperature
In Waipahu, in August, the average water temperature is 79.7°F (26.5°C).Note: Swimming, diving, and other water endeavors at temperatures between 77°F (25°C) and 84.2°F (29°C) are considered enjoyable and satisfying for extended periods without discomfort.
Daylight
In Waipahu, the average length of the day in August is 12h and 50min.On the first day of the month, sunrise is at 6:05 am and sunset at 7:10 pm. On the last day of August, sunrise is at 6:15 am and sunset at 6:48 pm HST.
Sunshine
In Waipahu, 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 estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: In August, the UV index of 6 transforms into the following advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Caution! The Sun's UV rays become stronger due to reflections from water and sand.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Waipahu, 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
Waipahu, 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
Waipahu, 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
Waipahu, 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
Waipahu, 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
Waipahu, 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
Waipahu, HI
- Average sea temperature in August: 79.6°F
The best month for swimming (with the highest average sea temperature) is September (80.6°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in August /
Average sunshine in August
Waipahu, HI
- Average daylight in August: 12h and 48min
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 18min
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
Waipahu, 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
Waipahu, 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
Waipahu, 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
Waipahu, 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).
