July weather forecast and climate
Heeia, HI

Weather in July

July, like June, in Heeia, Hawaii, is another warm summer month, with average temperature fluctuating between 75.7°F (24.3°C) and 79.9°F (26.6°C).

Temperature

In July, the average high-temperature is essentially the same as in June - a still moderately hot 79.9°F (26.6°C). In July, the average low-temperature is 75.7°F (24.3°C).

Humidity

Months with the highest humidity in Heeia are February through April, July, August, October and December, with an average relative humidity of 76%.

Rainfall

The month with the least rainfall is July when the rain falls for 13.9 days and typically collects 0.71" (18mm) of precipitation.

Ocean temperature

In July, the average ocean temperature in Heeia is 79.2°F (26.2°C).
Note: 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.

Daylight

The average length of the day in Heeia is 13.3h.

Sunshine

The average sunshine is 9.9h.

UV index

Months with the highest UV index are July through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: In July, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the most humid month in Heeia?

February through April, July, August, October and December, with an average relative humidity of 76%, are most humid months in Heeia, Hawaii.

What is the average humidity in July in Heeia?

In July, the average relative humidity is 76%.

What is the driest month in Heeia?

July is the month with the least rainfall in Heeia. Rain falls for 13.9 days and accumulates 0.71" (18mm) of precipitation.

How many days does it rain in July in Heeia?

In Heeia, in July, it is raining for 13.9 days, with typically 0.71" (18mm) of accumulated precipitation.

What is the water temperature in July in Heeia?

In Heeia, in July, the average water temperature 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 Heeia?

The average length of the day in July is 13.3h.

How many hours of sunshine does Heeia have in July?

In July, the average sunshine in Heeia, Hawaii, is 9.9h.

When is the highest UV index in Heeia?

Months with the highest UV index in Heeia, Hawaii, are July through September, with an average maximum UV index of 7.

What is the UV index reading in July in Heeia?

In July, the average daily maximum UV index in Heeia is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in July
Heeia, HI

Average temperature in July - Heeia, HI
  • Average high temperature in July: 79.9°F

The warmest months (with the highest average high temperature) are August and September (81°F).
The month with the lowest average high temperature is February (74.3°F).

  • Average low temperature in July: 75.7°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is February (69.6°F).

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Average pressure in July
Heeia, HI

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

The month with the highest atmospheric pressure is April (30.06").
Months with the lowest atmospheric pressure are September and October (29.97").

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Average wind speed in July
Heeia, HI

Average wind speed in July - Heeia, HI
  • Average wind speed in July: 13.5mph

The windiest month (with the highest average wind speed) is July (13.5mph).
The calmest month (with the lowest average wind speed) is January (10.3mph).

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Average humidity in July
Heeia, HI

Average humidity in July - Heeia, HI
  • Average humidity in July: 76%

Months with the highest relative humidity are February, March, April, July, August, October and December (76%).
Months with the lowest relative humidity are January, May, June, September and November (75%).

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Average rainfall in July
Heeia, HI

Average rainfall in July - Heeia, HI
  • Average rainfall in July: 0.71"

The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.71").

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Average rainfall days in July
Heeia, HI

Average rainfall days in July - Heeia, HI
  • Average rainfall days in July: 13.9 days

The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is June (13.5 days).

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Average sea temperature in July
Heeia, HI

Average sea temperature in July - Heeia, 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
Heeia, HI

Average daylight in July / Average sunshine in July - Heeia, HI
  • Average daylight in July: 13.3h

The month with the longest days is June (Average daylight: 13.4h).
The month with the shortest days is December (Average daylight: 10.8h).

  • Average sunshine in July: 9.9h

The month with the most sunshine is June (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 6.3h).

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Average sunshine days in July
Heeia, HI

Average sunshine days in July - Heeia, HI
  • Average sunshine days in July: 11.3 days

The month with the most sunshine days is June (12.2 days).
The month with the least sunshine days is April (6.5 days).

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Average UV index in July
Heeia, HI

Average UV index in July - Heeia, HI
  • Average UV index in July: 7

Months with the highest UV index are July, August and September (UV index 7).
Months with the lowest UV index are January, February, March, April, May, June, October, November and December (UV index 6).

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Average cloud cover in July
Heeia, HI

Average cloud cover in July - Heeia, HI
  • Average cloud cover in July: 36

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is September (Cloud cover 32).

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Average visibility in July
Heeia, HI

Average visibility in July - Heeia, HI
  • Average visibility in July: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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