July weather forecast
Halawa, HI

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Weather in July

The month of July in Halawa is marked by subtle yet steady temperature increments. Rainfall begins its uphill climb from the lows of June, standing at 3" (76mm) in July. Emphasizing sun protection becomes vital as the UV index peaks. The sea still offers its warm embrace, sustaining optimum levels for water activities. Longer daylight hours, combined with increased sunshine, continue to enhance the city's tropical charm.

Temperature

July through October, when the average high-temperature reaches 82.4°F (28°C), are the warmest months.

Rainfall

In July, the rain falls for 8 days. Throughout July, 2.99" (76mm) of precipitation is accumulated. Throughout the year, there are 116 rainfall days, and 54.96" (1396mm) of precipitation is accumulated.

Ocean temperature

In July, the average ocean temperature is 78.8°F (26°C).
Note: In water activities such as swimming and diving, temperatures from 77°F (25°C) to 84.2°F (29°C) are deemed highly pleasurable for extended periods without any unease.

Daylight

In Halawa, the average length of the day in July is 13h and 16min.
On the first day of July, sunrise is at 5:49 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:05 pm HST.

Sunshine

The months with the most sunshine are May through September, with an average of 9h of sunshine.

UV index

The months with the highest UV index in Halawa are June through August, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 12 during July, leads to the following recommendations:
Take every vital safeguard, as unprotected skin and eyes may suffer burns rapidly. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. After a swim or an outdoor workout, generously apply and reapply a broad-spectrum SPF 30+ sunscreen. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.
Updated: Jun 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest?

July through October represent the warmest period, with an average high-temperature of 82.4°F (28°C).

How hot is it in July?

In July, in Halawa, the average high-temperature is 82.4°F (28°C), and the average low-temperature is 66.2°F (19°C).

How much does it rain in July?

In Halawa, in July, during 8 rainfall days, 2.99" (76mm) of precipitation is typically accumulated.

What is the water temperature in July?

In Halawa, the average seawater temperature in July is 78.8°F (26°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.

How many hours of daylight does Halawa have in July?

In July, the average day length is 13h and 16min.

When is the sunrise / sunset in July?

On the first day of July, sunrise is at 5:49 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:05 pm HST.

What are the months with the most sunshine?

May through September, with an average of 9h of sunshine, are months with the most sunshine.

How many hours of sunshine does Halawa have in July?

In July, the average sunshine duration is 9h.

What are the months with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 12.

How high is the UV index in July?

The average daily maximum UV index in July is 12. A UV Index reading of 11, and higher, represents an extreme health vulnerability from unsafe exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in July
Halawa, HI

Average temperature in July - Halawa, HI
  • Average high temperature in July: 82°F

The warmest months (with the highest average high temperature) are July, August, September and October (82°F).
The months with the lowest average high temperature are January, February and March (77°F).

  • Average low temperature in July: 66°F

The month with the highest average low temperature is August (68°F).
The coldest months (with the lowest average low temperature) are January, February and March (61°F).

Average rainfall in July
Halawa, HI

Average rainfall in July - Halawa, HI
  • Average rainfall in July: 3"

The wettest month (with the highest rainfall) is January (7.4").
The driest month (with the least rainfall) is June (1.9").

Average rainfall days in July
Halawa, HI

Average rainfall days in July - Halawa, HI
  • Average rainfall days in July: 8 days

The months with the highest number of rainy days are January, March, April and December (12 days).
The months with the least rainy days are June and September (7 days).

Average sea temperature in July
Halawa, HI

Average sea temperature in July - Halawa, HI
  • Average sea temperature in July: 79°F

The best month for swimming (with the highest average sea temperature) is September (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).

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

Average daylight in July / Average sunshine in July - Halawa, 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: 9h

The months with the most sunshine are May, June, July, August and September (Average sunshine: 9h).
The months with the least sunshine are January, February, November and December (Average sunshine: 7h).

Average UV index in July
Halawa, HI

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

The 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).

Halawa, Hawaii, USA

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