July weather forecast
Haiku, HI

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Weather in July

July, like June, in Haiku, Hawaii, is a moderately hot summer month, with an average temperature fluctuating between 75°F (23.9°C) and 77.5°F (25.3°C).

Temperature

Haiku, Hawaii, notes an average high-temperature of a still warm 77.5°F (25.3°C) in July, displaying minor variation from June. In July, Haiku temperatures settle at a low of 75°F (23.9°C) during the nights, reflecting a minor change from daytime highs.

Humidity

The months with the highest humidity are July and August, with an average relative humidity of 78%.

Rainfall

In Haiku, in July, it is raining for 10.3 days, with typically 0.51" (13mm) of accumulated precipitation. In Haiku, during the entire year, the rain falls for 136.7 days and collects up to 13.94" (354mm) of precipitation.

Snowfall

In Haiku, snow does not fall in January through August, October through December.

Daylight

In Haiku, the average length of the day in July is 13h and 16min.
On the first day of the month, sunrise is at 5:48 am and sunset at 7:10 pm. On the last day of July, sunrise is at 5:59 am and sunset at 7:03 pm HST.

Sunshine

The months with the most sunshine in Haiku are June and July, with an average of 11.3h of sunshine.

UV index

January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 6 in July translates into this advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full 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.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in July?

In Haiku, in July, the average high-temperature is 77.5°F (25.3°C), and the average low-temperature is 75°F (23.9°C).

What is the most humid month?

July and August, with an average relative humidity of 78%, are most humid months.

What is the average humidity in July?

In July, the average relative humidity is 78%.

How many days does it rain in July?

In Haiku, during July, the rain falls for 10.3 days and regularly aggregates up to 0.51" (13mm) of precipitation.

When it does not snow?

In Haiku, snow does not fall in January through August, October through December.

What is the average length of the day in July?

The average day length in July is 13h and 16min.

When is the sunrise / sunset in July?

On the first day of July, sunrise is at 5:48 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 7:03 pm HST.

What are the months with the most sunshine?

The months with the most sunshine are June and July, with an average of 11.3h of sunshine.

How long on average sun shines in July?

The average sunshine duration in July is 11.3h.

What is the month with the lowest UV index in Haiku?

January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index.

How high is the UV index in July?

The average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Haiku, HI

Average temperature in July - Haiku, HI
  • Average high temperature in July: 77.5°F

The warmest month (with the highest average high temperature) is September (79°F).
The month with the lowest average high temperature is March (72.9°F).

  • Average low temperature in July: 75°F

The month with the highest average low temperature is September (76.1°F).
The coldest month (with the lowest average low temperature) is March (69.8°F).

Average pressure in July
Haiku, HI

Average pressure in July - Haiku, 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).

Average wind speed in July
Haiku, HI

Average wind speed in July - Haiku, HI
  • Average wind speed in July: 14.2mph

The windiest month (with the highest average wind speed) is June (14.4mph).
The calmest month (with the lowest average wind speed) is January (10.9mph).

Average humidity in July
Haiku, HI

Average humidity in July - Haiku, HI
  • Average humidity in July: 78%

The months with the highest relative humidity are July and August (78%).
The months with the lowest relative humidity are January and February (76%).

Average rainfall in July
Haiku, HI

Average rainfall in July - Haiku, HI
  • Average rainfall in July: 0.51"

The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is September (0.43").

Average rainfall days in July
Haiku, HI

Average rainfall days in July - Haiku, HI
  • Average rainfall days in July: 10.3 days

The month with the highest number of rainy days is March (14.1 days).
The month with the least rainy days is September (8.1 days).

Average snowfall days in July
Haiku, HI

Average snowfall days in July - Haiku, HI
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

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

Average daylight in July / Average sunshine in July - Haiku, HI
  • Average daylight in July: 13h and 2min

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 July: 11h and 2min

The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

Average sunshine days in July
Haiku, HI

Average sunshine days in July - Haiku, HI
  • Average sunshine days in July: 14.6 days

The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is November (11.2 days).

Average UV index in July
Haiku, HI

Average UV index in July - Haiku, HI
  • Average UV index in July: 6

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

Average cloud cover in July
Haiku, HI

Average cloud cover in July - Haiku, HI
  • Average cloud cover in July: 25

The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is September (Cloud cover 23).

Average visibility in July
Haiku, HI

Average visibility in July - Haiku, 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).

Haiku, Hawaii, USA

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