August weather forecast
Koloa, HI

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Weather in August

August, the last month of the summer in Koloa, is also a moderately hot month, with an average temperature ranging between min 75.7°F (24.3°C) and max 79.5°F (26.4°C).

Temperature

August's advent presents an average high-temperature of a still warm 79.5°F (26.4°C), indicating a slight variation from the conditions of the previous month. Koloa, during the August nights, maintains an average temperature of 75.7°F (24.3°C), closely aligned with its daytime readings.

Humidity

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

Rainfall

In Koloa, during August, the rain falls for 21.1 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.

Daylight

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

Sunshine

The average sunshine in August is 8.4h.

UV index

The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the temperature in August in Koloa?

In August, in Koloa, the average high-temperature is 79.5°F (26.4°C), and the average low-temperature is 75.7°F (24.3°C).

What is the most humid month in Koloa?

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

What is the average humidity in August in Koloa?

The average relative humidity in August is 77%.

How much does it rain in Koloa in August?

In August, the rain falls for 21.1 days. Throughout August, 1.89" (48mm) of precipitation is accumulated.

How many hours of daylight does Koloa have in August?

In Koloa, the average day length in August is 12h and 52min.

When is the sunrise / sunset in August in Koloa?

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, in Koloa, Hawaii, sunrise is at 6:20 am and sunset at 6:54 pm HST.

How many hours of sunshine does Koloa have in August?

In August, the average sunshine duration in Koloa, Hawaii, is 8.4h.

When is the lowest UV index in Koloa?

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

What is the UV index intensity in August in Koloa?

In Koloa, Hawaii, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Koloa, HI

Average temperature in August - Koloa, 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
Koloa, HI

Average pressure in August - Koloa, 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
Koloa, HI

Average wind speed in August - Koloa, 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
Koloa, HI

Average humidity in August - Koloa, 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
Koloa, HI

Average rainfall in August - Koloa, 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
Koloa, HI

Average rainfall days in August - Koloa, 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 daylight in August /
Average sunshine in August
Koloa, HI

Average daylight in August / Average sunshine in August - Koloa, 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
Koloa, HI

Average sunshine days in August - Koloa, 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
Koloa, HI

Average UV index in August - Koloa, 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
Koloa, HI

Average cloud cover in August - Koloa, 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
Koloa, HI

Average visibility in August - Koloa, 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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Koloa, Hawaii, USA

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