August weather forecastWaimanalo Beach, HI
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Waimanalo Beach, Hawaii, with temperature in the range of an average low of 76.8°F (24.9°C) and an average high of 80.2°F (26.8°C).Temperature
With the onset of August, a modest change to a still moderately hot 80.2°F (26.8°C) from July's 79.7°F (26.5°C) is noted in high-temperature. Waimanalo Beach navigates through August with a barely noticeable decrease in temperature at night, stabilizing at a still moderately hot 76.8°F (24.9°C).Humidity
The months with the highest humidity in Waimanalo Beach are April, June through August and December, with an average relative humidity of 76%.Rainfall
In Waimanalo Beach, in August, during 12.2 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, there are 169.9 rainfall days, and 13.15" (334mm) of precipitation is accumulated.Ocean temperature
In Waimanalo Beach, the average seawater temperature in August 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 in Waimanalo Beach is 12h and 50min.On the first day of the month, sunrise is at 6:04 am and sunset at 7:09 pm. On the last day of August, sunrise is at 6:14 am and sunset at 6:47 pm HST.
Sunshine
In August, the average sunshine is 9.2h.UV index
The months with the highest UV index are July through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 7 in August translates into these instructions:
Deter overexposure. Protecting against the sun's effects is essential. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take note! Sand and water reflections strengthen the Sun's UV exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Waimanalo Beach, 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
Waimanalo Beach, 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
Waimanalo Beach, 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
Waimanalo Beach, 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
Waimanalo Beach, 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
Waimanalo Beach, 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
Waimanalo Beach, 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
Waimanalo Beach, 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: 9h and 12min
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
Waimanalo Beach, 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
Waimanalo Beach, 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
Waimanalo Beach, 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
Waimanalo Beach, 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).
