July weather forecast
Kailua, HI

Weather in July

July, the same as June, is a moderately hot summer month in Kailua, Hawaii, with an average temperature ranging between max 79.7°F (26.5°C) and min 76.6°F (24.8°C).

Temperature

In July, the average high-temperature is practically the same as in June - a still moderately hot 79.7°F (26.5°C). The average low-temperature, in July, is 76.6°F (24.8°C).

Humidity

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

Rainfall

The month with the least rainfall is July, when the rain falls for 11.8 days and typically collects 0.55" (14mm) of precipitation.

Ocean temperature

In Kailua, in July, the average water temperature is 79.2°F (26.2°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 July is 13h and 17min.
On the first day of July, sunrise is at 5:52 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:10 pm HST.

Sunshine

In July, the average sunshine in Kailua is 10.4h.

UV index

The months with the highest UV index are July through October, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in July 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the most humid month in Kailua?

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

What is the average humidity in July in Kailua?

The average relative humidity in July in Kailua, Hawaii, is 76%.

What is the driest month in Kailua?

The month with the least rainfall in Kailua is July, when the rain falls for 11.8 days and typically collects 0.55" (14mm) of precipitation.

How many days does it rain in July in Kailua?

In July, in Kailua, Hawaii, the rain falls for 11.8 days. Throughout July, 0.55" (14mm) of precipitation is accumulated.

What is the ocean temperature in July in Kailua?

In Kailua, Hawaii, the average seawater temperature in July is 79.2°F (26.2°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 July in Kailua?

In Kailua, the average day length in July is 13h and 17min.

When is the sunrise / sunset in July in Kailua?

In July, on the first day of the month, sunrise is at 5:52 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:10 pm HST.

How long on average sun shines in July in Kailua?

The average sunshine duration in July in Kailua is 10.4h.

What are the months with 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.

What is the UV index reading in July in Kailua?

The average daily maximum UV index in July is 7. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in July
Kailua, HI

Average temperature in July - Kailua, HI
  • Average high temperature in July: 79.7°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 July: 76.6°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).

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Average pressure in July
Kailua, HI

Average pressure in July - Kailua, HI
  • Average pressure in July: 30.01"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 July
Kailua, HI

Average wind speed in July - Kailua, HI
  • Average wind speed in July: 14.1mph

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).

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Average humidity in July
Kailua, HI

Average humidity in July - Kailua, HI
  • Average humidity in July: 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%).

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Average rainfall in July
Kailua, HI

Average rainfall in July - Kailua, HI
  • Average rainfall in July: 0.55"

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

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Average rainfall days in July
Kailua, HI

Average rainfall days in July - Kailua, HI
  • Average rainfall days in July: 11.8 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).

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Average sea temperature in July
Kailua, HI

Average sea temperature in July - Kailua, HI
  • Average sea temperature in July: 79.1°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).

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

Average daylight in July / Average sunshine in July - Kailua, HI
  • Average daylight in July: 13h and 17min

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 July: 10h and 24min

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).

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Average sunshine days in July
Kailua, HI

Average sunshine days in July - Kailua, HI
  • Average sunshine days in July: 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).

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Average UV index in July
Kailua, HI

Average UV index in July - Kailua, HI
  • Average UV index in July: 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).

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Average cloud cover in July
Kailua, HI

Average cloud cover in July - Kailua, HI
  • Average cloud cover in July: 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).

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Average visibility in July
Kailua, HI

Average visibility in July - Kailua, HI
  • Average visibility in July: 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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