July weather forecast
Kahului, HI

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Weather in July

July in Kahului is the epitome of tropical summer, with the mercury hovering between 75.6°F (24.2°C) and 78.8°F (26°C). Brilliant sunshine embellishes the city, and the sea surface temperature rises slightly, making water-related activities all the more enticing. However, the city does experience a mild increase in the number of rainy days. Yet, the weather remains predominantly dry, promising a convincingly summery essence.

Temperature

July ushers in an average high-temperature of a still moderately hot 78.8°F (26°C), aligning closely with the preceding month. The temperature during July sees a subtle transition from day to night, averaging a low of 75.6°F (24.2°C).

Humidity

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

Rainfall

In July, the rain falls for 8.5 days. Throughout July, 0.39" (10mm) of precipitation is accumulated. In Kahului, during the entire year, the rain falls for 103.4 days and collects up to 6.57" (167mm) of precipitation.

Ocean temperature

In Kahului, the average seawater temperature in July is 78.4°F (25.8°C).
Note: For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in July is 13h and 16min.
On the first day of July in Kahului, sunrise is at 5:48 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:04 pm HST.

Sunshine

In July, the average sunshine is 11.2h.

UV index

July through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: A daily high UV index of 7 in July leads to these guidelines:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.

Frequently asked questions

What are the temperatures in July?

The average high-temperature and low-temperature during July are 78.8°F (26°C) and 75.6°F (24.2°C) respectively.

What are the most humid months?

The months with the highest humidity in Kahului are July and August, with an average relative humidity of 76%.

What is the average humidity in July?

The average relative humidity in July is 76%.

How many days does it rain in July?

In Kahului, in July, during 8.5 rainfall days, 0.39" (10mm) of precipitation is typically accumulated.

What is the water temperature in July?

In Kahului, Hawaii, the average seawater temperature in July is 78.4°F (25.8°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 Kahului have in July?

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

What time are sunrise and sunset in July?

On the first day of July, sunrise is at 5:48 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:04 pm HST.

How many hours of sunshine does Kahului have in July?

In July, the average sunshine duration is 11.2h.

When is the highest UV index?

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 July?

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

Average temperature in July
Kahului, HI

Average temperature in July - Kahului, HI
  • Average high temperature in July: 78.8°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 July: 75.6°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 July
Kahului, HI

Average pressure in July - Kahului, HI
  • Average pressure in July: 30"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 July
Kahului, HI

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

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 July
Kahului, HI

Average humidity in July - Kahului, HI
  • Average humidity in July: 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 July
Kahului, HI

Average rainfall in July - Kahului, HI
  • Average rainfall in July: 0.39"

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 July
Kahului, HI

Average rainfall days in July - Kahului, HI
  • Average rainfall days in July: 8.5 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 July
Kahului, HI

Average sea temperature in July - Kahului, HI
  • Average sea temperature in July: 78.5°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 July /
Average sunshine in July
Kahului, HI

Average daylight in July / Average sunshine in July - Kahului, 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 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 July
Kahului, HI

Average sunshine days in July - Kahului, HI
  • Average sunshine days in July: 16 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 July
Kahului, HI

Average UV index in July - Kahului, 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).

Average cloud cover in July
Kahului, HI

Average cloud cover in July - Kahului, HI
  • Average cloud cover in July: 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 July
Kahului, HI

Average visibility in July - Kahului, 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).

Kahului, Hawaii, USA

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