August weather forecast
Nānākuli, HI

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Weather in August

August introduces minor alterations to the continuing weather pattern in Nānākuli. A slight decrease in overall temperature can be observed, although it still persistently stays on the higher side. Winds reach their maximum speed for the year at 15.3mph (24.6km/h), providing a fresh breath of air during the heat. As September approaches, the city anticipates a subtle cool down in terms of temperature while other elements retain consistency.

Temperature

During August and September, Nānākuli experiences its warmest period, with an average high-temperature of 81.7°F (27.6°C).

Heat index

The heat index for August is evaluated at a tropical 86°F (30°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

January, April through June, August through November, with an average relative humidity of 74%, are the least humid months in Nānākuli.

Rainfall

In Nānākuli, in August, it is raining for 16 days, with typically 0.94" (24mm) of accumulated precipitation. In Nānākuli, during the entire year, the rain falls for 196.3 days and collects up to 14.72" (374mm) of precipitation.

Ocean temperature

In August, the average ocean temperature in Nānākuli is 79.7°F (26.5°C).
Note: For water activities like swimming, diving, and more, temperatures ranging between 77°F (25°C) and 84.2°F (29°C) offer superior comfort and enjoyment for lengthy durations.

Daylight

In August, the average length of the day in Nānākuli is 12h and 50min.
On the first day of the month, sunrise is at 6:06 am and sunset at 7:11 pm. On the last day of August, sunrise is at 6:16 am and sunset at 6:49 pm HST.

Sunshine

In Nānākuli, the average sunshine in August is 9h.

UV index

June through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum UV index of 7 in August translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Attention! UV radiation is markedly stronger with water and sand reflections.
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Frequently asked questions

What part of the year is the hottest in Nānākuli?

Warmest months are August and September, with an average high-temperature of 81.7°F (27.6°C).

What are August temperatures in Nānākuli?

In Nānākuli, 81.7°F (27.6°C) is the average high-temperature and 75.9°F (24.4°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is evaluated at 86°F (30°C).

What are the least humid months in Nānākuli?

The months with the lowest humidity in Nānākuli are January, April through June, August through November, with an average relative humidity of 74%.

What is the average humidity in August in Nānākuli?

In August, the average relative humidity is 74%.

How much does it rain in Nānākuli in August?

In Nānākuli, in August, during 16 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.

What is the ocean temperature in August in Nānākuli?

In August, the average ocean temperature in Nānākuli is 79.7°F (26.5°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.

What is the average length of the day in August in Nānākuli?

In August, the average day length in Nānākuli is 12h and 50min.

When is the sunrise / sunset in August in Nānākuli?

On the first day of August in Nānākuli, sunrise is at 6:06 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 6:49 pm HST.

How long on average sun shines in August in Nānākuli?

In Nānākuli, the average sunshine duration in August is 9h.

When is the highest UV index in Nānākuli?

The months with the highest UV index in Nānākuli are June through September, with an average maximum UV index of 7.

How high is the UV index in August in Nānākuli?

The average daily maximum UV index in August is 7. A UV Index reading of 6 to 7 represents a high hazard to health 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
Nānākuli, HI

Average temperature in August - Nānākuli, HI
  • Average high temperature in August: 81.7°F

The warmest months (with the highest average high temperature) are August and September (81.7°F).
The month with the lowest average high temperature is February (75°F).

  • Average low temperature in August: 75.9°F

The months with the highest average low temperature are August and September (75.9°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).

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Average pressure in August
Nānākuli, HI

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

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

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Average wind speed in August
Nānākuli, HI

Average wind speed in August - Nānākuli, HI
  • Average wind speed in August: 10.9mph

The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is October (8.8mph).

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Average humidity in August
Nānākuli, HI

Average humidity in August - Nānākuli, HI
  • Average humidity in August: 74%

The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are January, April, May, June, August, September, October and November (74%).

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Average rainfall in August
Nānākuli, HI

Average rainfall in August - Nānākuli, HI
  • Average rainfall in August: 0.94"

The wettest month (with the highest rainfall) is March (1.81").
The driest month (with the least rainfall) is July (0.67").

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Average rainfall days in August
Nānākuli, HI

Average rainfall days in August - Nānākuli, HI
  • Average rainfall days in August: 16 days

The month with the highest number of rainy days is September (18.9 days).
The month with the least rainy days is January (13.8 days).

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Average sea temperature in August
Nānākuli, HI

Average sea temperature in August - Nānākuli, HI
  • Average sea temperature in August: 79.6°F

The best month for swimming (with the highest average sea temperature) is September (80.6°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
Nānākuli, HI

Average daylight in August / Average sunshine in August - Nānākuli, 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 0min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).

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Average sunshine days in August
Nānākuli, HI

Average sunshine days in August - Nānākuli, HI
  • Average sunshine days in August: 9 days

The month with the most sunshine days is January (11.8 days).
The month with the least sunshine days is November (6.4 days).

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Average UV index in August
Nānākuli, HI

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

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

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Average cloud cover in August
Nānākuli, HI

Average cloud cover in August - Nānākuli, HI
  • Average cloud cover in August: 33

The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are January and September (Cloud cover 32).

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Average visibility in August
Nānākuli, HI

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

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