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 registers an average high-temperature of a still moderately hot 80.2°F (26.8°C), slightly varied from July's 79.7°F (26.5°C). In Kailua, the nocturnal temperatures throughout August show a marginal dip from the daytime averages, settling at a still moderately hot 76.8°F (24.9°C).Humidity
April, June through August and December, with an average relative humidity of 76%, are the most humid months.Rainfall
In August, in Kailua, the rain falls for 12.2 days. Throughout August, 0.75" (19mm) of precipitation is accumulated. Throughout the year, in Kailua, there are 169.9 rainfall days, and 13.15" (334mm) of precipitation is accumulated.Ocean temperature
In August, the average ocean temperature is 79.5°F (26.4°C).Note: Water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are pleasurable, without feeling uncomfortable even during extended periods.
Daylight
The average length of the day in August is 12h and 50min.On the first day of August, sunrise is at 6:04 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 6:47 pm HST.
Sunshine
In Kailua, the average sunshine in August is 9.2h.UV index
July through October, with an average maximum UV index of 7, are months with the highest UV index in Kailua, Hawaii. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 7 in August translates into the following instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Warning! Sand and water reflections boost the intensity of UV exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature in Kailua?
What is the most humid month in Kailua?
What is the average humidity in August in Kailua?
How many days does it rain in August in Kailua?
How warm is the water in August in Kailua?
What is the average length of the day in August in Kailua?
What time are sunrise and sunset in August in Kailua?
How many hours of sunshine does Kailua have in August?
When is the highest UV index in Kailua?
How high is the UV index in August in Kailua?
Average temperature in August
Kailua, HI
- Average high temperature in August: 80.2°F
The warmest month (with the highest average high temperature) is September (80.6°F).
The month with the lowest average high temperature is February (74.5°F).
- Average low temperature in August: 76.8°F
The months with the highest average low temperature are September and October (77°F).
The coldest month (with the lowest average low temperature) is February (70.5°F).
Average pressure in August
Kailua, 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
Kailua, HI
- Average wind speed in August: 13.7mph
The windiest month (with the highest average wind speed) is July (14.1mph).
The calmest month (with the lowest average wind speed) is January (10.7mph).
Average humidity in August
Kailua, HI
- Average humidity in August: 76%
The months with the highest relative humidity are April, June, July, August and December (76%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in August
Kailua, HI
- Average rainfall in August: 0.75"
The wettest month (with the highest rainfall) is March (1.69").
The driest month (with the least rainfall) is July (0.55").
Average rainfall days in August
Kailua, HI
- Average rainfall days in August: 12.2 days
The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is June (11.3 days).
Average sea temperature in August
Kailua, HI
- Average sea temperature in August: 79.5°F
The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight in August /
Average sunshine in August
Kailua, 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: 9h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in August
Kailua, HI
- Average sunshine days in August: 12.8 days
The month with the most sunshine days is June (13.6 days).
The months with the least sunshine days are March and November (6.6 days).
Average UV index in August
Kailua, HI
- Average UV index in August: 7
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in August
Kailua, HI
- Average cloud cover in August: 30
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is September (Cloud cover 27).
Average visibility in August
Kailua, 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).
Kailua, Hawaii, USA
Weather forecast for your location
2. Allow the app to use your location