August weather forecast and climate
Waimanalo Beach, HI

Weather in August

August, the last month of the summer, in Waimanalo Beach, is another warm month, with average temperature ranging between max 80.2°F (26.8°C) and min 76.8°F (24.9°C).

Temperature

In August, the average high-temperature is essentially the same as in July - a still moderately hot 80.2°F (26.8°C). In Waimanalo Beach, the average low-temperature is 76.8°F (24.9°C).

Humidity

April, June through August and December, with an average relative humidity of 76%, are most humid months.

Rainfall

In Waimanalo Beach, during 12.2 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, in Waimanalo Beach, there are 169.9 rainfall days, and 13.15" (334mm) of precipitation is accumulated.

Ocean temperature

In Waimanalo Beach, the average water temperature is 79.5°F (26.4°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In Waimanalo Beach, Hawaii, the average length of the day is 12.8h.

Sunshine

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 Waimanalo Beach. A UV Index estimate of 6 to 7 represents a high threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What are the most humid months in Waimanalo Beach?

Months with the highest humidity in Waimanalo Beach are April, June through August and December, with an average relative humidity of 76%.

What is the average humidity in August in Waimanalo Beach?

In August, the average relative humidity is 76%.

How much does it rain in Waimanalo Beach in August?

In Waimanalo Beach, Hawaii, in August, during 12.2 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

What is the water temperature in August in Waimanalo Beach?

In August, the average ocean temperature in Waimanalo Beach, Hawaii, is 79.5°F (26.4°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Waimanalo Beach have in August?

In August, the average length of the day in Waimanalo Beach is 12.8h.

How many hours of sunshine does Waimanalo Beach have in August?

In August, the average sunshine in Waimanalo Beach is 9.2h.

What is the month with the highest UV index in Waimanalo Beach?

July through October, with an average maximum UV index of 7, are months with the highest UV index in Waimanalo Beach.

How high is the UV index in August in Waimanalo Beach?

In Waimanalo Beach, Hawaii, the average daily maximum UV index in August is 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the Sun's UV rays.

Average temperature in August
Waimanalo Beach, HI

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

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).

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Average pressure in August
Waimanalo Beach, HI

Average pressure in August - Waimanalo Beach, HI
  • Average pressure in August: 29.98"

The month with the highest atmospheric pressure is April (30.06").
Months with the lowest atmospheric pressure are September and October (29.97").

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Average wind speed in August
Waimanalo Beach, HI

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).

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Average humidity in August
Waimanalo Beach, HI

Average humidity in August - Waimanalo Beach, HI
  • Average humidity in August: 76%

Months with the highest relative humidity are April, June, July, August and December (76%).
Months with the lowest relative humidity are January and November (74%).

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Average rainfall in August
Waimanalo Beach, HI

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").

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Average rainfall days in August
Waimanalo Beach, HI

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).

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Average sea temperature in August
Waimanalo Beach, HI

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).

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Average daylight in August /
Average sunshine in August
Waimanalo Beach, HI

Average daylight in August / Average sunshine in August - Waimanalo Beach, HI
  • Average daylight in August: 12.8h

The month with the longest days is June (Average daylight: 13.4h).
The month with the shortest days is December (Average daylight: 10.8h).

  • Average sunshine in August: 9.2h

The month with the most sunshine is June (Average sunshine: 11.2h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days in August
Waimanalo Beach, HI

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).
Months with the least sunshine days are March and November (6.6 days).

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Average UV index in August
Waimanalo Beach, HI

Average UV index in August - Waimanalo Beach, HI
  • Average UV index in August: 7

Months with the highest UV index are July, August, September and October (UV index 7).
Months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).

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Average cloud cover in August
Waimanalo Beach, HI

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).

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Average visibility in August
Waimanalo Beach, HI

Average visibility in August - Waimanalo Beach, HI
  • Average visibility in August: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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