August weather forecastKekaha, HI
August
Weather in August
August ties with July and September for the highest regular temperatures. An interesting change comes with the rainfall which increases slightly from July but remains relatively low. The sea maintains its warm temperature, keeping water activities enjoyable. Despite slightly increased rainfall, August promises an exciting blend of sunshine and rainfall, creating an enjoyable tropical weather aura.Temperature
With an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 76.1°F (24.5°C), August is the warmest month in Kekaha.Heat index
The average heat index in August is computed to be 84.2°F (29°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
February through April, June through August, October and December, with an average relative humidity of 75%, are the most humid months.Rainfall
In August, the rain falls for 13.9 days. Throughout August, 0.71" (18mm) of precipitation is accumulated. Throughout the year, there are 172.7 rainfall days, and 15.75" (400mm) of precipitation is accumulated.Ocean temperature
In Kekaha, the average seawater temperature in August is 79.9°F (26.6°C).Note: A water temperature from 77°F (25°C) to 84.2°F (29°C) is considered very warm and enjoyable, allowing water activities to be pleasant for extended periods without irritation.
Daylight
The average length of the day in August is 12h and 52min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:18 pm. On the last day of August, in Kekaha, Hawaii, sunrise is at 6:21 am and sunset at 6:55 pm HST.
Sunshine
The average sunshine in August is 9.2h.UV index
July through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 7 in August, converts into the following recommendations:
Fend off overexposure. Sun protection is vital. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Caution! Sand and water surfaces escalate the UV intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Kekaha, HI
- Average high temperature in August: 80.8°F
The warmest month (with the highest average high temperature) is August (80.8°F).
The months with the lowest average high temperature are February and March (73.4°F).
- Average low temperature in August: 76.1°F
The month with the highest average low temperature is September (76.3°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).
Average pressure in August
Kekaha, HI
- Average pressure in August: 30"Hg
The months with the highest atmospheric pressure are March and April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed in August
Kekaha, HI
- Average wind speed in August: 9.6mph
The windiest month (with the highest average wind speed) is March (10.7mph).
The calmest month (with the lowest average wind speed) is May (8.6mph).
Average humidity in August
Kekaha, HI
- Average humidity in August: 75%
The months with the highest relative humidity are February, March, April, June, July, August, October and December (75%).
The months with the lowest relative humidity are January, May, September and November (74%).
Average rainfall in August
Kekaha, HI
- Average rainfall in August: 0.71"
The wettest month (with the highest rainfall) is March (2.2").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in August
Kekaha, HI
- Average rainfall days in August: 13.9 days
The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is January (11.5 days).
Average sea temperature in August
Kekaha, HI
- Average sea temperature in August: 79.8°F
The best month for swimming (with the highest average sea temperature) is September (80.5°F).
The coldest month (with the lowest average sea temperature) is March (75.4°F).
Average daylight in August /
Average sunshine in August
Kekaha, HI
- Average daylight in August: 12h and 54min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in August: 9h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is November (Average sunshine: 7h and 6min).
Average sunshine days in August
Kekaha, HI
- Average sunshine days in August: 11.2 days
The month with the most sunshine days is January (13.8 days).
The month with the least sunshine days is November (6.7 days).
Average UV index in August
Kekaha, HI
- Average UV index in August: 7
The months with the highest UV index are July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, October, November and December (UV index 6).
Average cloud cover in August
Kekaha, HI
- Average cloud cover in August: 30
The month with the most cloud cover is March (Cloud cover 35).
The months with the least cloud cover are January and September (Cloud cover 28).
Average visibility in August
Kekaha, 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).





