August weather forecast
Wahiawa, HI

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Weather in August

August continues the summer affair with consistent warm temperatures and increased daylight hours. The tropical weather conditions favor beach outings, picnics, and other outdoor activities. Rain showers occur, bringing respite from the predominant heat. Tropical fruits populate the local markets, adding a vibrant touch to the culinary landscape of Wahiawa. The peak temperature in August stands notably high at 82.6°F (28.1°C).

Temperature

Wahiawa's August weather, with an average high temperature of 82.6°F (28.1°C) and an average low temperature of 73.9°F (23.3°C), tends to be the warmest of the year.

Heat index

In August, the average heat index is estimated at a tropical 87.8°F (31°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical 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

The average relative humidity in August is 74%.

Rainfall

In August, the rain falls for 23.8 days. Throughout August, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 252.2 rainfall days, and 22.09" (561mm) of precipitation is accumulated.

Daylight

In August, the average length of the day is 12h and 50min.
On the first day of the month, sunrise is at 6:05 am and sunset at 7:11 pm. On the last day of August, sunrise is at 6:15 am and sunset at 6:48 pm HST.

Sunshine

In Wahiawa, the average sunshine in August is 7.2h.

UV index

The months with the highest UV index are March through November, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In August, the maximum UV index of 6 suggests this advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

August, characterized by an average high temperature of 82.6°F (28.1°C) and a low temperature of 73.9°F (23.3°C), is generally the warmest month.

Is it hot during August?

August temperatures vary between a high-temperature of 82.6°F (28.1°C) and a low-temperature of 73.9°F (23.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 87.8°F (31°C).

What is the average humidity in August in Wahiawa?

The average relative humidity in August is 74%.

How many days does it rain in August?

In August, the rain falls for 23.8 days. Throughout August, 1.69" (43mm) of precipitation is accumulated.

What is the average length of the day in August?

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

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:05 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 6:48 pm HST.

How long on average sun shines in August in Wahiawa?

In Wahiawa, the average sunshine duration in August is 7.2h.

What is the month with the highest UV index?

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

How high is the UV index in August?

The average daily maximum UV index in August in Wahiawa is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe 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
Wahiawa, HI

Average temperature in August - Wahiawa, HI
  • Average high temperature in August: 82.6°F

The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is February (75.6°F).

  • Average low temperature in August: 73.9°F

The month with the highest average low temperature is September (74.3°F).
The coldest month (with the lowest average low temperature) is February (66.7°F).

Average pressure in August
Wahiawa, HI

Average pressure in August - Wahiawa, HI
  • Average pressure in August: 29.99"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).

Average wind speed in August
Wahiawa, HI

Average wind speed in August - Wahiawa, HI
  • Average wind speed in August: 9.4mph

The windiest months (with the highest average wind speed) are June and July (10.2mph).
The calmest month (with the lowest average wind speed) is October (7.6mph).

Average humidity in August
Wahiawa, HI

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

The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is September (73%).

Average rainfall in August
Wahiawa, HI

Average rainfall in August - Wahiawa, HI
  • Average rainfall in August: 1.69"

The wettest month (with the highest rainfall) is October (2.6").
The driest month (with the least rainfall) is July (1.26").

Average rainfall days in August
Wahiawa, HI

Average rainfall days in August - Wahiawa, HI
  • Average rainfall days in August: 23.8 days

The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is January (16 days).

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

Average daylight in August / Average sunshine in August - Wahiawa, 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 48min).

  • Average sunshine in August: 7h and 1min

The month with the most sunshine is June (Average sunshine: 8h and 24min).
The month with the least sunshine is November (Average sunshine: 5h and 36min).

Average sunshine days in August
Wahiawa, HI

Average sunshine days in August - Wahiawa, HI
  • Average sunshine days in August: 3.3 days

The month with the most sunshine days is January (10.8 days).
The month with the least sunshine days is August (3.3 days).

Average UV index in August
Wahiawa, HI

Average UV index in August - Wahiawa, HI
  • Average UV index in August: 6

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

Average cloud cover in August
Wahiawa, HI

Average cloud cover in August - Wahiawa, HI
  • Average cloud cover in August: 51

The month with the most cloud cover is June (Cloud cover 52).
The month with the least cloud cover is January (Cloud cover 43).

Average visibility in August
Wahiawa, HI

Average visibility in August - Wahiawa, 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).

Wahiawa, Hawaii, USA

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