July weather forecast and climate
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, like June, in Honolulu, Hawaii, is a moderately hot summer month, with average temperature ranging between max 80.4°F (26.9°C) and min 75°F (23.9°C).

Temperature

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

Humidity

In Honolulu, the average relative humidity 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 July, the average ocean temperature in Honolulu, Hawaii, 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 Honolulu, the average length of the day is 13.3h.

Sunshine

In July, the average sunshine in Honolulu 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. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In July, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. 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 reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in July in Honolulu?

In Honolulu, in July, the average high-temperature is 80.4°F (26.9°C), and the average low-temperature is 75°F (23.9°C).

What is the average humidity in July in Honolulu?

The average relative humidity in July in Honolulu, Hawaii, is 75%.

How much does it rain in Honolulu in July?

In Honolulu, Hawaii, in July, it is raining for 16.4 days, with typically 0.67" (17mm) of accumulated precipitation.

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 warm is the water in July in Honolulu?

In July, the average ocean temperature in Honolulu, Hawaii, 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?

In July, the average length of the day in Honolulu, Hawaii, is 13.3h.

How many hours of sunshine does Honolulu have in July?

The average sunshine in July in Honolulu, Hawaii, is 9.9h.

What are the months with the highest UV index in Honolulu?

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

What is the UV index intensity in July in Honolulu?

In July, the average daily maximum UV index in Honolulu, Hawaii, is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to the 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).
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"

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
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%

Months with the highest relative humidity are February and December (76%).
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

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: 13.3h

The month with the longest days is June (Average daylight: 13.4h).
The month with the shortest days is December (Average daylight: 10.9h).

  • Average sunshine in July: 9.9h

The month with the most sunshine is June (Average sunshine: 10.8h).
Months with the least sunshine are November and December (Average sunshine: 6.5).

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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

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
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).
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

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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