August weather forecast
Kailua, HI

Weather in August

August, the last month of the summer in Kailua, is another warm month, with an average temperature varying between 76.8°F (24.9°C) and 80.2°F (26.8°C).

Temperature

In Kailua, the average high-temperature in August is almost the same as in July - a still warm 80.2°F (26.8°C). In Kailua, in August, the average low-temperature is 76.8°F (24.9°C).

Humidity

April, June through August and December, with an average relative humidity of 76%, are the most humid months.

Rainfall

In Kailua, it is raining for 12.2 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, there are 169.9 rainfall days, and 13.15" (334mm) of precipitation is accumulated.

Ocean temperature

In August, the average ocean temperature is 79.5°F (26.4°C).
Note: 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.

Daylight

In Kailua, the average length of the day in August is 12h and 50min.
On the first day of the month, sunrise is at 6:04 am and sunset at 7:10 pm. On the last day of August, in Kailua, sunrise is at 6:14 am and sunset at 6:48 pm HST.

Sunshine

In Kailua, 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 hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 7 in August interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the temperature in August in Kailua?

In Kailua, in August, the average high-temperature is 80.2°F (26.8°C), and the average low-temperature is 76.8°F (24.9°C).

What is the most humid month in Kailua?

April, June through August and December, with an average relative humidity of 76%, are most humid months in Kailua, Hawaii.

What is the average humidity in August in Kailua?

In August, the average relative humidity in Kailua, Hawaii, is 76%.

How much does it rain in Kailua in August?

In August, in Kailua, Hawaii, the rain falls for 12.2 days. Throughout August, 0.75" (19mm) of precipitation is accumulated.

What is the ocean temperature in August in Kailua?

In Kailua, Hawaii, in August, the average water temperature is 79.5°F (26.4°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.

How many hours of daylight does Kailua have in August?

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

When is the sunrise / sunset in August in Kailua?

In August, on the first day of the month, sunrise is at 6:04 am and sunset at 7:10 pm. On the last day of the month, in Kailua, Hawaii, sunrise is at 6:14 am and sunset at 6:48 pm HST.

How many hours of sunshine does Kailua have in August?

The average sunshine duration in August in Kailua, Hawaii, is 9.2h.

When is the highest UV index in Kailua?

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

How high is the UV index in August in Kailua?

In August, the average daily maximum UV index 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
Kailua, HI

Average temperature in August - Kailua, HI
  • Average high temperature in August: 80.2°F

The warmest month (with the highest average high temperature) is September (80.6°F).
The month with the lowest average high temperature is February (74.5°F).

  • Average low temperature in August: 76.8°F

The months with the highest average low temperature are September and October (77°F).
The coldest month (with the lowest average low temperature) is February (70.5°F).

[Resources]

Average pressure in August
Kailua, HI

Average pressure in August - Kailua, 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).

[Resources]

Average wind speed in August
Kailua, HI

Average wind speed in August - Kailua, HI
  • Average wind speed in August: 13.7mph

The windiest month (with the highest average wind speed) is July (14.1mph).
The calmest month (with the lowest average wind speed) is January (10.7mph).

[Resources]

Average humidity in August
Kailua, HI

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

The months with the highest relative humidity are April, June, July, August and December (76%).
The months with the lowest relative humidity are January and November (74%).

[Resources]

Average rainfall in August
Kailua, HI

Average rainfall in August - Kailua, HI
  • Average rainfall in August: 0.75"

The wettest month (with the highest rainfall) is March (1.69").
The driest month (with the least rainfall) is July (0.55").

[Resources]

Average rainfall days in August
Kailua, HI

Average rainfall days in August - Kailua, HI
  • Average rainfall days in August: 12.2 days

The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is June (11.3 days).

[Resources]

Average sea temperature in August
Kailua, HI

Average sea temperature in August - Kailua, HI
  • Average sea temperature in August: 79.5°F

The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

[Resources]

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

Average daylight in August / Average sunshine in August - Kailua, HI
  • Average daylight in August: 12h and 50min

The month with the longest days is June (Average daylight: 13h and 25min).
The month with the shortest days is December (Average daylight: 10h and 52min).

  • Average sunshine in August: 9h and 12min

The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

[Resources]

Average sunshine days in August
Kailua, HI

Average sunshine days in August - Kailua, HI
  • Average sunshine days in August: 12.8 days

The month with the most sunshine days is June (13.6 days).
The months with the least sunshine days are March and November (6.6 days).

[Resources]

Average UV index in August
Kailua, HI

Average UV index in August - Kailua, 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).

[Resources]

Average cloud cover in August
Kailua, HI

Average cloud cover in August - Kailua, HI
  • Average cloud cover in August: 30

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is September (Cloud cover 27).

[Resources]

Average visibility in August
Kailua, HI

Average visibility in August - Kailua, 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location