August weather forecast
Kihei, HI

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Weather in August

August continues the warm and sunny trend in Kihei, offering a summertime vibe with the highest sea temperature at 79.4°F (26.3°C). Despite being one of the warmest months of the year, the presence of a steady, light breeze provides a refreshing balance. Enjoy water activities, venture out to observe Hawaii's fascinating sea creatures in the pleasant sea temperature. The mildly increased rainfall enhances the lush greens, creating breathtaking views of the Hawaii landscape.

Temperature

The commencement of August introduces an average high-temperature of a still moderately hot 79.5°F (26.4°C), closely mirroring the preceding month. August nights witness a mild cool down to an average low of 76.3°F (24.6°C).

Humidity

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

Rainfall

In August, the rain falls for 8.7 days. Throughout August, 0.43" (11mm) of precipitation is accumulated. Throughout the year, there are 103.4 rainfall days, and 6.57" (167mm) of precipitation is accumulated.

Ocean temperature

In Kihei, in August, the average water temperature is 79.3°F (26.3°C).
Note: Water activities including swimming and diving at temperatures from 77°F (25°C) to 84.2°F (29°C) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.

Daylight

In August, the average length of the day is 12h and 49min.
On the first day of August in Kihei, sunrise is at 6:00 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 6:41 pm HST.

Sunshine

The average sunshine in August is 9.2h.

UV index

July through October, 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 risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 7 transforms into these recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be alert! The reflection of water and sand augments UV radiation intensity.
Updated: Jun 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

The average high-temperature, in August, in Kihei, is 79.5°F (26.4°C), while the average low-temperature is 76.3°F (24.6°C).

What are the most humid months?

July and August, with an average relative humidity of 76%, are most humid months.

What is the average humidity in August?

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

How much does it rain in August?

In August, the rain falls for 8.7 days. Throughout August, 0.43" (11mm) of precipitation is accumulated.

What is the water temperature in August?

In August, the average ocean temperature 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.

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

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

When is the sunrise / sunset in August in Kihei?

In August, on the first day of the month, sunrise is at 6:00 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 6:41 pm HST.

How many hours of sunshine does Kihei have in August?

In Kihei, the average sunshine duration in August is 9.2h.

What are the months with the highest UV index in Kihei?

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 August, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in August
Kihei, HI

Average temperature in August - Kihei, 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).

Average pressure in August
Kihei, HI

Average pressure in August - Kihei, 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).

Average wind speed in August
Kihei, HI

Average wind speed in August - Kihei, 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).

Average humidity in August
Kihei, HI

Average humidity in August - Kihei, 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%).

Average rainfall in August
Kihei, HI

Average rainfall in August - Kihei, 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").

Average rainfall days in August
Kihei, HI

Average rainfall days in August - Kihei, 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).

Average sea temperature in August
Kihei, HI

Average sea temperature in August - Kihei, 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).

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

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

Average sunshine days in August
Kihei, HI

Average sunshine days in August - Kihei, 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).

Average UV index in August
Kihei, HI

Average UV index in August - Kihei, 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).

Average cloud cover in August
Kihei, HI

Average cloud cover in August - Kihei, 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).

Average visibility in August
Kihei, HI

Average visibility in August - Kihei, 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).

Kihei, Hawaii, USA

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