August weather forecast
Captain Cook, HI

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Weather in August

The last month of the summer, August, is another pleasant month in Captain Cook, Hawaii, with an average temperature fluctuating between 73.2°F (22.9°C) and 69.1°F (20.6°C).

Temperature

Captain Cook's warmest months, August and October, record an average high-temperature of 73.2°F (22.9°C).

Humidity

June through September, with an average relative humidity of 81%, are the most humid months.

Rainfall

In Captain Cook, in August, it is raining for 21.8 days, with typically 1.73" (44mm) of accumulated precipitation. In Captain Cook, during the entire year, the rain falls for 216.1 days and collects up to 16.57" (421mm) of precipitation.

Daylight

The average length of the day in August is 12h and 46min.
On the first day of August, sunrise is at 6:00 am and sunset at 6:59 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 6:39 pm HST.

Sunshine

In August, the average sunshine in Captain Cook, Hawaii, is 8.7h.

UV index

The months with the highest UV index are May through October, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

What month is the hottest in Captain Cook?

Warmest months in Captain Cook are August and October, with an average high-temperature of 73.2°F (22.9°C).

What is the temperature in August in Captain Cook?

In August, the average high-temperature and low-temperature in Captain Cook, Hawaii, are 73.2°F (22.9°C) and 69.1°F (20.6°C) respectively.

What are the most humid months in Captain Cook?

June through September, with an average relative humidity of 81%, are most humid months in Captain Cook.

What is the average humidity in August in Captain Cook?

The average relative humidity in August is 81%.

How much does it rain in Captain Cook in August?

In August, the rain falls for 21.8 days. Throughout August, 1.73" (44mm) of precipitation is accumulated.

What is the average length of the day in August in Captain Cook?

In Captain Cook, the average day length in August is 12h and 46min.

When are sunrise and sunset in August in Captain Cook?

On the first day of August in Captain Cook, sunrise is at 6:00 am and sunset at 6:59 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 6:39 pm HST.

How long on average sun shines in August in Captain Cook?

In Captain Cook, Hawaii, the average sunshine duration in August is 8.7h.

What is the month with the highest UV index in Captain Cook?

The months with the highest UV index are May through October, with an average maximum UV index of 6.

What is the UV index intensity in August in Captain Cook?

In Captain Cook, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Captain Cook, HI

Average temperature in August - Captain Cook, HI
  • Average high temperature in August: 73.2°F

The warmest months (with the highest average high temperature) are August and October (73.2°F).
The month with the lowest average high temperature is February (68.9°F).

  • Average low temperature in August: 69.1°F

The month with the highest average low temperature is October (70°F).
The coldest month (with the lowest average low temperature) is March (64.8°F).

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Average pressure in August
Captain Cook, HI

Average pressure in August - Captain Cook, HI
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is April (30.04"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).

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Average wind speed in August
Captain Cook, HI

Average wind speed in August - Captain Cook, HI
  • Average wind speed in August: 6.1mph

The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).

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Average humidity in August
Captain Cook, HI

Average humidity in August - Captain Cook, HI
  • Average humidity in August: 81%

The months with the highest relative humidity are June, July, August and September (81%).
The month with the lowest relative humidity is February (73%).

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Average rainfall in August
Captain Cook, HI

Average rainfall in August - Captain Cook, HI
  • Average rainfall in August: 1.73"

The wettest month (with the highest rainfall) is September (1.81").
The driest month (with the least rainfall) is January (0.75").

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Average rainfall days in August
Captain Cook, HI

Average rainfall days in August - Captain Cook, HI
  • Average rainfall days in August: 21.8 days

The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is January (10.8 days).

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Average daylight in August /
Average sunshine in August
Captain Cook, HI

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

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in August: 8h and 4min

The month with the most sunshine is May (Average sunshine: 10h and 42min).
The months with the least sunshine are November and December (Average sunshine: 7h and 18min).

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Average sunshine days in August
Captain Cook, HI

Average sunshine days in August - Captain Cook, HI
  • Average sunshine days in August: 4 days

The month with the most sunshine days is January (12.7 days).
The month with the least sunshine days is May (3.2 days).

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Average UV index in August
Captain Cook, HI

Average UV index in August - Captain Cook, HI
  • Average UV index in August: 6

The months with the highest UV index are May, June, July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 5).

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Average cloud cover in August
Captain Cook, HI

Average cloud cover in August - Captain Cook, HI
  • Average cloud cover in August: 28

The month with the most cloud cover is June (Cloud cover 31).
The month with the least cloud cover is January (Cloud cover 15).

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Average visibility in August
Captain Cook, HI

Average visibility in August - Captain Cook, 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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Captain Cook, Hawaii, USA

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