August weather forecast
Kahului, HI

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Weather in August

With temperatures soaring from 76.3°F (24.6°C) to 79.5°F (26.4°C) in August, the tropical vibe intensifies. But Kahului doesn't let the heat become overbearing thanks to its regularly flowing breeze. Humidity escalates, albeit marginally, but it hardly leads to discomfort. An enchanting feature of this month is the long daylight hours, allowing travelers ample time to delve into the city's colorful aura. However, the city does see a light increase in rainfall after July's minor dip.

Temperature

Kahului experiences a subtle adjustment in high-temperatures to a still moderately hot 79.5°F (26.4°C) with the onset of August, maintaining near parity with July's 78.8°F (26°C). In Kahului, August nights maintain a consistent temperature, with an average low of 76.3°F (24.6°C).

Humidity

The months with the highest humidity are July and August, with an average relative humidity of 76%.

Rainfall

In Kahului, in August, it is raining for 8.7 days, with typically 0.43" (11mm) of accumulated precipitation. In Kahului, during the entire year, the rain falls for 103.4 days and collects up to 6.57" (167mm) of precipitation.

Ocean temperature

In Kahului, in August, the average water temperature is 79.3°F (26.3°C).
Note: A water temperature from 77°F (25°C) to 84.2°F (29°C) is considered very warm and enjoyable, allowing water activities to be pleasant for extended periods without irritation.

Daylight

The average length of the day in August is 12h and 49min.
On the first day of August in Kahului, sunrise is at 6:00 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 6:42 pm HST.

Sunshine

In Kahului, Hawaii, the average sunshine in August is 9.2h.

UV index

The months with the highest UV index are July through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 7 during August translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. 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. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Notice! The Sun's UV exposure elevates with sand and water reflections.
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Frequently asked questions

What is the temperature in August in Kahului?

The average high-temperature and low-temperature in Kahului, Hawaii, during August are 79.5°F (26.4°C) and 76.3°F (24.6°C) respectively.

What are the most humid months in Kahului?

The months with the highest humidity are July and August, with an average relative humidity of 76%.

What is the average humidity in August in Kahului?

In August, the average relative humidity is 76%.

How many days does it rain in August in Kahului?

In Kahului, during August, the rain falls for 8.7 days and regularly aggregates up to 0.43" (11mm) of precipitation.

What is the ocean temperature in August in Kahului?

In August, the average ocean temperature in Kahului, Hawaii, is 79.3°F (26.3°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 Kahului have in August?

In August, the average day length in Kahului is 12h and 49min.

When is the sunrise / sunset in August in Kahului?

In August, on the first day of the month, sunrise is at 6:00 am and sunset at 7:04 pm. On the last day of the month, in Kahului, Hawaii, sunrise is at 6:09 am and sunset at 6:42 pm HST.

How long on average sun shines in August in Kahului?

In August, the average sunshine duration is 9.2h.

What is the month with the highest UV index in Kahului?

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

What is the UV index reading in August in Kahului?

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

Average temperature in August
Kahului, HI

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

The warmest month (with the highest average high temperature) is September (79.9°F).
The month with the lowest average high temperature is February (73.9°F).

  • Average low temperature in August: 76.3°F

The month with the highest average low temperature is October (76.5°F).
The coldest months (with the lowest average low temperature) are February and March (70.7°F).

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Average pressure in August
Kahului, HI

Average pressure in August - Kahului, 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
Kahului, HI

Average wind speed in August - Kahului, HI
  • Average wind speed in August: 13.4mph

The windiest month (with the highest average wind speed) is June (13.6mph).
The calmest month (with the lowest average wind speed) is January (10.4mph).

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Average humidity in August
Kahului, HI

Average humidity in August - Kahului, HI
  • Average humidity in August: 76%

The months with the highest relative humidity are July and August (76%).
The months with the lowest relative humidity are January and February (74%).

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Average rainfall in August
Kahului, HI

Average rainfall in August - Kahului, HI
  • Average rainfall in August: 0.43"

The wettest months (with the highest rainfall) are March and December (0.87").
The driest month (with the least rainfall) is June (0.2").

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Average rainfall days in August
Kahului, HI

Average rainfall days in August - Kahului, HI
  • Average rainfall days in August: 8.7 days

The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is June (6.6 days).

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Average sea temperature in August
Kahului, HI

Average sea temperature in August - Kahului, HI
  • Average sea temperature in August: 79.4°F

The best month for swimming (with the highest average sea temperature) is September (80°F).
The coldest month (with the lowest average sea temperature) is March (75.6°F).

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

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

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in August: 9h and 1min

The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in August
Kahului, HI

Average sunshine days in August - Kahului, HI
  • Average sunshine days in August: 15.8 days

The month with the most sunshine days is June (19.9 days).
The month with the least sunshine days is March (15.2 days).

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Average UV index in August
Kahului, HI

Average UV index in August - Kahului, HI
  • Average UV index in August: 7

The months with the highest UV index are July, August, September and October (UV index 7).
The 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
Kahului, HI

Average cloud cover in August - Kahului, HI
  • Average cloud cover in August: 24

The month with the most cloud cover is March (Cloud cover 30).
The months with the least cloud cover are June and September (Cloud cover 21).

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Average visibility in August
Kahului, HI

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

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