Honolulu
Hawaii, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Honolulu, HI

Waikiki beach viewed from above, with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
Waikiki beach viewed from above, with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
July is the driest month of the year in Honolulu, Hawaii, with a slight rise in humidity to 64%. The rainfall drops further to rain only for an average of just nine days all month. The rain gauge in July collects precipitation of averagely 0.1" (2.5mm), which is the lowest collection of the year. The sunshine hours per day are steady at eleven, heating the ocean temperatures to a constant 26°. The temperatures rise further to read 75.2°F (24°C) at the lowest point and a constant 87.8°F (31°C) at its highest point.

What is the temperature in July in Honolulu?

The average high-temperature, in July, in Honolulu, Hawaii, is 88°F (31.1°C), while the average low-temperature is 74.5°F (23.6°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that calculates temperature value influenced by the moisture in the air, is evaluated at 97.3°F (36.3°C).

What is the average humidity in July in Honolulu?

In Honolulu, the average relative humidity in July is 64.6%.

How many days does it rain in July in Honolulu?

In Honolulu, Hawaii, during July, the rain falls for 7.1 days and regularly aggregates up to 9.4" (239mm) of precipitation.

What is the ocean temperature in July in Honolulu?

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

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

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

What month has the most sunshine in Honolulu?

July has the most sunshine of the year in Honolulu, with an average of 9.9h of sunshine.

How many hours of sunshine does Honolulu have in July?

In July, the average sunshine is 9.9h.

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

Months with the highest UV index in Honolulu, Hawaii, are June through August, with an average maximum UV index of 12.

How high is the UV index in July in Honolulu?

In July, the average daily maximum UV index is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from the exposure to the Sun's UV radiation.
Average temperature in July - Honolulu, HI
  • Average high temperature in July: 87.9°F

The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is January (80.1°F).

  • Average low temperature in July: 74.5°F

The month with the highest average low temperature is August (75.1°F).
The coldest month (with the lowest average low temperature) is February (66.1°F).

Average humidity in July - Honolulu, HI
  • Average humidity in July: 64.6%

The month with the highest relative humidity is January (73.3%).
The month with the lowest relative humidity is August (64.1%).

Average rainfall in July - Honolulu, HI
  • Average rainfall in July: 9.4"

The wettest month (with the highest rainfall) is March (11.5").
The driest month (with the lowest rainfall) is June (6.2").

Average rainfall days in July - Honolulu, HI
  • Average rainfall days in July: 7.1 days

The month with the highest number of rainy days is December (9.7 days).
The month with the lowest number of rainy days is August (5.6 days).

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).

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 shortest days is December (Average daylight: 10.9h).

  • Average sunshine in July: 9.9h

The month with most sunshine is July (Average sunshine: 9.9h).
The month with least sunshine is December (Average sunshine: 6.4h).

Average UV index in July - Honolulu, HI
  • Average UV index in July: 12

Months with the highest UV index are June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).