August weather forecast
Wailua, HI

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Weather in August

August is a month that encapsulates the essence of summer in Wailua, Hawaii, with subtle nuances of weather variables as compared to July. The sea temperature hits the year's peak to reach a high of 80.2°F (26.8°C) during August, offering an exquisite oceanic experience. Sailing smooth into September, there is continuity in temperature and other weather parameters, maintaining the reign of an ideal tropical climate. Sunrises and sunsets are scintillating affairs, with ample daylight to enjoy the island's various attractions. Make the most of outdoor activities as the dry, hot, and humid weather complements all kinds of adventures.

Temperature

The onset of August in Wailua brings with it an average high-temperature of a still moderately hot 79.5°F (26.4°C), showing a negligible variation from the month before. Wailua's evenings during August maintain an average temperature of 75.7°F (24.3°C), aligning closely with the daytime temperatures.

Humidity

The months with the highest humidity are June through August, October and December, with an average relative humidity of 77%.

Rainfall

In Wailua, in August, during 21.1 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.

Ocean temperature

In August, the average ocean temperature is 79.2°F (26.2°C).
Note: Between the temperatures of 77°F (25°C) and 84.2°F (29°C), water is considered very warm, providing pleasure in water activities without discomfort over lengthy periods.

Daylight

In Wailua, Hawaii, the average length of the day in August is 12h and 52min.
On the first day of August, sunrise is at 6:10 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 6:54 pm HST.

Sunshine

In August, the average sunshine is 8.4h.

UV index

The months with the lowest UV index in Wailua are January through August, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 6 during August translates into the following directions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. 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. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.
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Frequently asked questions

What is the average August temperature in Wailua?

During August, Wailua experiences an average high-temperature of 79.5°F (26.4°C) and a low-temperature of 75.7°F (24.3°C).

What are the most humid months in Wailua?

June through August, October and December, with an average relative humidity of 77%, are most humid months.

What is the average humidity in August in Wailua?

The average relative humidity in August in Wailua, Hawaii, is 77%.

How many days does it rain in August in Wailua?

In Wailua, during August, the rain falls for 21.1 days and regularly aggregates up to 1.89" (48mm) of precipitation.

What is the water temperature in August in Wailua?

In August, the average ocean temperature in Wailua is 79.2°F (26.2°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Wailua have in August?

The average day length in August in Wailua, Hawaii, is 12h and 52min.

When is the sunrise / sunset in August in Wailua?

In August, on the first day of the month, sunrise is at 6:10 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 6:54 pm HST.

How many hours of sunshine does Wailua have in August?

The average sunshine duration in August in Wailua, Hawaii, is 8.4h.

When is the lowest UV index in Wailua?

The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6.

How high is the UV index in August in Wailua?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.

Average temperature in August
Wailua, HI

Average temperature in August - Wailua, HI
  • Average high temperature in August: 79.5°F

The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).

  • Average low temperature in August: 75.7°F

The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).

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Average pressure in August
Wailua, HI

Average pressure in August - Wailua, HI
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).

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Average wind speed in August
Wailua, HI

Average wind speed in August - Wailua, HI
  • Average wind speed in August: 12.1mph

The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).

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Average humidity in August
Wailua, HI

Average humidity in August - Wailua, HI
  • Average humidity in August: 77%

The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).

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Average rainfall in August
Wailua, HI

Average rainfall in August - Wailua, HI
  • Average rainfall in August: 1.89"

The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").

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Average rainfall days in August
Wailua, HI

Average rainfall days in August - Wailua, HI
  • Average rainfall days in August: 21.1 days

The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).

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Average sea temperature in August
Wailua, HI

Average sea temperature in August - Wailua, HI
  • Average sea temperature in August: 79.2°F

The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (74.8°F).

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Average daylight in August /
Average sunshine in August
Wailua, HI

Average daylight in August / Average sunshine in August - Wailua, HI
  • Average daylight in August: 12h and 5min

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: 8h and 2min

The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).

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Average sunshine days in August
Wailua, HI

Average sunshine days in August - Wailua, HI
  • Average sunshine days in August: 2.9 days

The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).

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Average UV index in August
Wailua, HI

Average UV index in August - Wailua, 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).

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Average cloud cover in August
Wailua, HI

Average cloud cover in August - Wailua, HI
  • Average cloud cover in August: 44

The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).

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Average visibility in August
Wailua, HI

Average visibility in August - Wailua, 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).

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Wailua, Hawaii, USA

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