August weather forecast
Aiea, HI

The swan-song of summer, August, bows out with grace, enthusiastic sunshine, and just a hint of autumn around the corner. August capitalizes on extended daylight hours by boasting the maximum UV index of the year. Despite the settled weather, wind speed markings display an appreciable drop, aiding to the serene late-summer feel. August is the epitome of Aiea's tropical heartbeat, manifesting the highest average high temperature of 81.3°F (27.4°C), maintaining the enviable balance between comfort and warmth.

Temperature

August registers an average high-temperature of a still moderately hot 81.3°F (27.4°C), slightly varied from July's 80.4°F (26.9°C). Aiea, during August nights, records a temperature marginally cooler than the daytime average, at a still moderately hot 75.7°F (24.3°C).

Heat index

The heat index value during August is estimated at a hot 86°F (30°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.

Humidity

In August, the average relative humidity in Aiea is 75%.

Rainfall

In Aiea, during August, the rain falls for 16.8 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, there are 197.2 rainfall days, and 14.61" (371mm) of precipitation is accumulated.

Ocean temperature

In August, the average ocean temperature in Aiea is 79.5°F (26.4°C).
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 77°F (25°C) to 84.2°F (29°C), without any unpleasant sensations for prolonged durations.

Daylight

The average length of the day in August is 12h and 50min.
On the first day of the month, sunrise is at 6:05 am and sunset at 7:10 pm. On the last day of August, in Aiea, sunrise is at 6:15 am and sunset at 6:48 pm HST.

Sunshine

In Aiea, the average sunshine in August is 8.9h.

UV index

The months with the highest UV index are July through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 7 in August leads to these recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Beware! Reflecting off water and sand, UV rays are much stronger.