August weather forecast
Halawa, HI

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Weather in August

August continues with the warm trend in Halawa, matching the temperature high of July. Despite this, it brings an additional increase in the lower temperature, peaking at 68°F (20°C). Rainfall registers a slight drop, marking 2.5" (64mm) throughout the month. The sea temperatures warm further, tempting even more beach outings. The UV index remains high during this time, so caution against sun damage is strongly advised.

Temperature

The yearly peak temperatures in Halawa, Hawaii, occur in July through October, averaging a high-temperature of 82.4°F (28°C).

Rainfall

In Halawa, in August, during 8 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, there are 116 rainfall days, and 54.96" (1396mm) of precipitation is accumulated.

Ocean temperature

In Halawa, the average seawater temperature in August is 78.8°F (26°C).
Note: For water activities like swimming, diving, and more, temperatures ranging between 77°F (25°C) and 84.2°F (29°C) offer superior comfort and enjoyment for lengthy durations.

Daylight

In August, the average length of the day is 12h and 50min.
On the first day of August in Halawa, sunrise is at 6:01 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 6:43 pm HST.

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In August, the maximum UV index of 12 transforms into these recommendations:
Take all necessary precautions, as unprotected skin can burn in minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Despite the overcast weather, sunscreen with SPF of at least 30 should be applied liberally and reapplied often, particularly after swimming or an outdoor workout. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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Frequently asked questions

What are the warmest months in Halawa?

Halawa's warmest months, July through October, record an average high-temperature of 82.4°F (28°C).

How hot is August in Halawa?

During August, Halawa experiences an average high-temperature of 82.4°F (28°C) and a low-temperature of 68°F (20°C).

How much does it rain in Halawa in August?

In Halawa, Hawaii, in August, it is raining for 8 days, with typically 2.48" (63mm) of accumulated precipitation.

How warm is the water in August in Halawa?

In Halawa, in August, the average water temperature 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 August?

In August, the average day length in Halawa, Hawaii, is 12h and 50min.

When is the sunrise / sunset in August in Halawa?

On the first day of August in Halawa, sunrise is at 6:01 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 6:43 pm HST.

What is the month with the most sunshine in Halawa?

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

How long on average sun shines in August in Halawa?

In August, the average sunshine duration in Halawa, Hawaii, is 9h.

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

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

How high is the UV index in August in Halawa?

The average daily maximum UV index in August in Halawa, Hawaii, is 12. A UV Index value of 11, and more, symbolizes an excessive health risk from exposure to Sun's UV rays.
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Halawa, HI

Average temperature in August - Halawa, HI
  • Average high temperature in August: 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 August: 68°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).

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Average rainfall in August
Halawa, HI

Average rainfall in August - Halawa, HI
  • Average rainfall in August: 2.5"

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

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Average rainfall days in August
Halawa, HI

Average rainfall days in August - Halawa, HI
  • Average rainfall days in August: 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).

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Average sea temperature in August
Halawa, HI

Average sea temperature in August - Halawa, HI
  • Average sea temperature in August: 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).

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

Average daylight in August / Average sunshine in August - Halawa, HI
  • Average daylight in August: 12h and 5min

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 August: 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).

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Average UV index in August
Halawa, HI

Average UV index in August - Halawa, HI
  • Average UV index in August: 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).

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Halawa, Hawaii, USA

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