July weather forecast
Honolulu, HI

Waikiki beach with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
Waikiki beach with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance

Weather in July

July, the same as June, is another warm summer month in Honolulu, Hawaii, with temperature in the range of an average high of 80.4°F (26.9°C) and an average low of 75°F (23.9°C).

Temperature

In July, the average high-temperature is practically the same as in June - a still moderately hot 80.4°F (26.9°C). In Honolulu, in July, the average low-temperature is 75°F (23.9°C).

Humidity

In July, the average relative humidity in Honolulu is 75%.

Rainfall

The month with the least rainfall in Honolulu is July, when the rain falls for 16.4 days and typically collects 0.67" (17mm) of precipitation.

Ocean temperature

In Honolulu, the average water temperature is 79.2°F (26.2°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

In July, the average length of the day in Honolulu is 13h and 17min.
On the first day of the month, sunrise is at 5:53 am and sunset at 7:17 pm. On the last day of July, sunrise is at 6:04 am and sunset at 7:10 pm HST.

Sunshine

In July, the average sunshine is 9.9h.

UV index

July through September, with an average maximum UV index of 7, are months with the highest UV index in Honolulu, Hawaii. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in July transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 average humidity in July in Honolulu?

In Honolulu, the average relative humidity in July is 75%.

What is the driest month in Honolulu?

The month with the least rainfall in Honolulu is July, when the rain falls for 16.4 days and typically collects 0.67" (17mm) of precipitation.

How many days does it rain in July in Honolulu?

In Honolulu, Hawaii, in July, during 16.4 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How warm is the water in July in Honolulu?

In Honolulu, Hawaii, the average seawater temperature in July is 79.2°F (26.2°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.

What is the average length of the day in July in Honolulu?

The average day length in July is 13h and 17min.

When are sunrise and sunset in July in Honolulu?

In July, on the first day of the month, sunrise is at 5:53 am and sunset at 7:17 pm. On the last day of the month, in Honolulu, Hawaii, sunrise is at 6:04 am and sunset at 7:10 pm HST.

How long on average sun shines in July in Honolulu?

In July, the average sunshine duration in Honolulu is 9.9h.

When is the highest UV index in Honolulu?

The months with the highest UV index are July through September, with an average maximum UV index of 7.

How high is the UV index in July in Honolulu?

In Honolulu, Hawaii, the average daily maximum UV index in July is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in July
Honolulu, HI

Average temperature in July - Honolulu, HI
  • Average high temperature in July: 80.4°F

The warmest month (with the highest average high temperature) is September (81.5°F).
The months with the lowest average high temperature are February and March (75°F).

  • Average low temperature in July: 75°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).

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Average pressure in July
Honolulu, HI

Average pressure in July - Honolulu, 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
Honolulu, HI

Average wind speed in July - Honolulu, HI
  • Average wind speed in July: 12.1mph

The windiest month (with the highest average wind speed) is July (12.1mph).
The calmest month (with the lowest average wind speed) is January (9mph).

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Average humidity in July
Honolulu, HI

Average humidity in July - Honolulu, HI
  • Average humidity in July: 75%

The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, September and November (74%).

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Average rainfall in July
Honolulu, HI

Average rainfall in July - Honolulu, HI
  • Average rainfall in July: 0.67"

The wettest months (with the highest rainfall) are March and October (1.81").
The driest month (with the least rainfall) is July (0.67").

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Average rainfall days in July
Honolulu, HI

Average rainfall days in July - Honolulu, HI
  • Average rainfall days in July: 16.4 days

The months with the highest number of rainy days are March and October (18 days).
The month with the least rainy days is January (12.6 days).

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Average sea temperature in July
Honolulu, HI

Average sea temperature in July - Honolulu, 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
Honolulu, HI

Average daylight in July / Average sunshine in July - Honolulu, 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: 9h and 54min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).

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Average sunshine days in July
Honolulu, HI

Average sunshine days in July - Honolulu, HI
  • Average sunshine days in July: 8.8 days

The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is October (6.3 days).

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Average UV index in July
Honolulu, HI

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

The months with the highest UV index are July, August and September (UV index 7).
The 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
Honolulu, HI

Average cloud cover in July - Honolulu, HI
  • Average cloud cover in July: 35

The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are January and September (Cloud cover 33).

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Average visibility in July
Honolulu, HI

Average visibility in July - Honolulu, 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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