August weather forecast
Keauhou, HI

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Weather in August

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

Temperature

Temperatures reach their maximum during August and October, recording 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 Keauhou, in August, during 21.8 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Keauhou, during the entire year, the rain falls for 216.1 days and collects up to 16.57" (421mm) of precipitation.

Ocean temperature

In August, the average ocean temperature is 79.5°F (26.4°C).
Note: For any water activity, the surface water temperatures in the range of 77°F (25°C) to 84.2°F (29°C) are deemed excellent and incredibly pleasant for longer durations.

Daylight

In Keauhou, 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 7:00 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 6:39 pm HST.

Sunshine

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

UV index

May through October, with an average maximum UV index of 6, are months with the highest UV index in Keauhou, Hawaii. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In August, a regular UV index of 6 translates into these guidelines:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be mindful! Sand and water reflections can up the Sun's UV exposure.

Frequently asked questions

What month is the hottest?

Keauhou sees the average highest temperatures during the months of August and October, peaking at 73.2°F (22.9°C).

What are August temperatures?

In Keauhou, 73.2°F (22.9°C) is the average high-temperature and 69.1°F (20.6°C) is the average low-temperature during August.

What are the most humid months?

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

What is the average humidity in August?

The average relative humidity in August is 81%.

How many days does it rain in August?

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

What is the ocean temperature in August?

In Keauhou, the average seawater temperature in August is 79.5°F (26.4°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in August?

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

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:00 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 6:08 am and sunset at 6:39 pm HST.

How many hours of sunshine does Keauhou have in August?

The average sunshine duration in August is 8.7h.

When is the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's 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
Keauhou, HI

Average temperature in August - Keauhou, 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).

Average pressure in August
Keauhou, HI

Average pressure in August - Keauhou, 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).

Average wind speed in August
Keauhou, HI

Average wind speed in August - Keauhou, 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).

Average humidity in August
Keauhou, HI

Average humidity in August - Keauhou, 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%).

Average rainfall in August
Keauhou, HI

Average rainfall in August - Keauhou, 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").

Average rainfall days in August
Keauhou, HI

Average rainfall days in August - Keauhou, 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).

Average sea temperature in August
Keauhou, HI

Average sea temperature in August - Keauhou, HI
  • Average sea temperature in August: 79.5°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 (76°F).

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

Average daylight in August / Average sunshine in August - Keauhou, 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).

Average sunshine days in August
Keauhou, HI

Average sunshine days in August - Keauhou, 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).

Average UV index in August
Keauhou, HI

Average UV index in August - Keauhou, 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).

Average cloud cover in August
Keauhou, HI

Average cloud cover in August - Keauhou, 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).

Average visibility in August
Keauhou, HI

Average visibility in August - Keauhou, 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).

Keauhou, Hawaii, USA

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