August weather forecast
Halawa, HI

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

During July through October, Halawa experiences its warmest period, with an average high-temperature of 82.4°F (28°C).

Rainfall

In Halawa, in August, it is raining for 8 days, with typically 2.48" (63mm) of accumulated precipitation. In Halawa, during the entire year, the rain falls for 116 days and collects up to 54.96" (1396mm) of precipitation.

Ocean temperature

In August, the average ocean temperature is 78.8°F (26°C).
Note: For activities such as swimming and diving, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

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

June through August, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 12 in August translates into the following instructions:
Carry out all vital precautions. Protection from sun exposure is a must. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Even on a cloudy day, sunscreen with a minimum SPF of 30 should be used liberally and reapplied often, especially after a swim or outdoor activity. Be on guard! The reflective nature of sand and water boosts UV exposure.