August weather forecast
Kapaau, HI

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Weather in August

The last month of the summer, August, is also an enjoyable month in Kapaau, Hawaii, with temperature in the range of an average low of 58.3°F (14.6°C) and an average high of 67.5°F (19.7°C).

Temperature

Kapaau's temperatures peak on average in August, reaching 67.5°F (19.7°C) at their highest and 58.3°F (14.6°C) at their lowest.

Humidity

In August, the average relative humidity is 81%.

Rainfall

The month with the most rainfall in Kapaau is August, when the rain falls for 25.7 days and typically aggregates up to 4.13" (105mm) of precipitation.

Daylight

In August, the average length of the day in Kapaau is 12h and 48min.
On the first day of August in Kapaau, sunrise is at 5:58 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 6:39 pm HST.

Sunshine

In Kapaau, the average sunshine in August is 8h.

UV index

May through October, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 5 during August translates into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What time of the year is the hottest in Kapaau?

Kapaau's temperature records reveal August as the warmest month, marked by average highs of 67.5°F (19.7°C) and lows of 58.3°F (14.6°C).

What are August temperatures in Kapaau?

An average high-temperature, in August, in Kapaau, is 67.5°F (19.7°C) and the average low-temperature is 58.3°F (14.6°C).

What is the average humidity in August in Kapaau?

In August, the average relative humidity in Kapaau, Hawaii, is 81%.

What is the rainiest month in Kapaau?

August is the month with the most rainfall in Kapaau. Rain falls for 25.7 days and accumulates 4.13" (105mm) of precipitation.

How many days does it rain in August in Kapaau?

In Kapaau, in August, during 25.7 rainfall days, 4.13" (105mm) of precipitation is typically accumulated.

How many hours of daylight does Kapaau have in August?

The average day length in August in Kapaau, Hawaii, is 12h and 48min.

When are sunrise and sunset in August in Kapaau?

In August, on the first day of the month, sunrise is at 5:58 am and sunset at 7:00 pm. On the last day of the month, in Kapaau, Hawaii, sunrise is at 6:07 am and sunset at 6:39 pm HST.

How long on average sun shines in August in Kapaau?

The average sunshine duration in August in Kapaau, Hawaii, is 8h.

What are the months with the highest UV index in Kapaau?

The months with the highest UV index in Kapaau are May through October, with an average maximum UV index of 5.

What is the UV index intensity in August in Kapaau?

The average daily maximum UV index in August in Kapaau, Hawaii, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Kapaau, HI

Average temperature in August - Kapaau, HI
  • Average high temperature in August: 67.5°F

The warmest month (with the highest average high temperature) is August (67.5°F).
The month with the lowest average high temperature is March (61.9°F).

  • Average low temperature in August: 58.3°F

The month with the highest average low temperature is September (59°F).
The coldest month (with the lowest average low temperature) is February (52°F).

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Average pressure in August
Kapaau, HI

Average pressure in August - Kapaau, HI
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).

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Average wind speed in August
Kapaau, HI

Average wind speed in August - Kapaau, HI
  • Average wind speed in August: 5.5mph

The windiest months (with the highest average wind speed) are July and August (5.5mph).
The calmest months (with the lowest average wind speed) are January, May and October (4.5mph).

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Average humidity in August
Kapaau, HI

Average humidity in August - Kapaau, HI
  • Average humidity in August: 81%

The months with the highest relative humidity are September and October (84%).
The month with the lowest relative humidity is February (78%).

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Average rainfall in August
Kapaau, HI

Average rainfall in August - Kapaau, HI
  • Average rainfall in August: 4.13"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is June (1.57").

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Average rainfall days in August
Kapaau, HI

Average rainfall days in August - Kapaau, HI
  • Average rainfall days in August: 25.7 days

The month with the highest number of rainy days is September (27.3 days).
The month with the least rainy days is January (17.1 days).

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

Average daylight in August / Average sunshine in August - Kapaau, 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: 10h and 54min).

  • Average sunshine in August: 8h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in August
Kapaau, HI

Average sunshine days in August - Kapaau, HI
  • Average sunshine days in August: 2.3 days

The month with the most sunshine days is January (9.7 days).
The month with the least sunshine days is September (0.8 days).

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Average UV index in August
Kapaau, HI

Average UV index in August - Kapaau, HI
  • Average UV index in August: 5

The months with the highest UV index are May, June, July, August, September and October (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).

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Average cloud cover in August
Kapaau, HI

Average cloud cover in August - Kapaau, HI
  • Average cloud cover in August: 40

The months with the most cloud cover are April and September (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 29).

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Average visibility in August
Kapaau, HI

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

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