August weather forecastHana, HI
August
Weather in August
In August, the weather in Hana, Hawaii, elegantly plateaus, creating an immersive tropical spectacle. This month sees further escalation in sea temperatures and extracted daylight. A drop in rainfall and cloud cover offers a brilliant display of sunlight, unrivaled in the preceding months. However, reversing the trend from July, the wind's speed intensifies, breathing a lively gust into the warm August air.Temperature
Hana's August showcases an average high-temperature of a still moderately hot 78.6°F (25.9°C), hardly distinct from July's 77.5°F (25.3°C). August nights reveal a minor deviation from daytime highs, with a mean low-temperature of 75.7°F (24.3°C).Humidity
July and August, with an average relative humidity of 78%, are the most humid months.Rainfall
In Hana, in August, it is raining for 10.8 days, with typically 0.59" (15mm) of accumulated precipitation. Throughout the year, in Hana, there are 136.7 rainfall days, and 13.94" (354mm) of precipitation is accumulated.Snowfall
In Hana, snow does not fall in January through August, October through December.Ocean temperature
In Hana, Hawaii, in August, the average water temperature is 79.2°F (26.2°C).Note: For any water activity, surface water temperatures from 77°F (25°C) to 84.2°F (29°C) are deemed perfect and extremely pleasing for enduring enjoyment.
Daylight
In August, the average length of the day is 12h and 49min.On the first day of the month, sunrise is at 5:58 am and sunset at 7:01 pm. On the last day of August, sunrise is at 6:07 am and sunset at 6:40 pm HST.
Sunshine
In Hana, the average sunshine in August is 9.2h.UV index
The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 6 in August translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Notice! The Sun's UV exposure elevates with sand and water reflections.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Hana, HI
- Average high temperature in August: 78.6°F
The warmest month (with the highest average high temperature) is September (79°F).
The month with the lowest average high temperature is March (72.9°F).
- Average low temperature in August: 75.7°F
The month with the highest average low temperature is September (76.1°F).
The coldest month (with the lowest average low temperature) is March (69.8°F).
Average pressure in August
Hana, HI
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in August
Hana, HI
- Average wind speed in August: 14.1mph
The windiest month (with the highest average wind speed) is June (14.4mph).
The calmest month (with the lowest average wind speed) is January (10.9mph).
Average humidity in August
Hana, HI
- Average humidity in August: 78%
The months with the highest relative humidity are July and August (78%).
The months with the lowest relative humidity are January and February (76%).
Average rainfall in August
Hana, HI
- Average rainfall in August: 0.59"
The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in August
Hana, HI
- Average rainfall days in August: 10.8 days
The month with the highest number of rainy days is March (14.1 days).
The month with the least rainy days is September (8.1 days).
Average snowfall days in August
Hana, HI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average sea temperature in August
Hana, HI
- Average sea temperature in August: 79.1°F
The best month for swimming (with the highest average sea temperature) is September (79.3°F).
The coldest month (with the lowest average sea temperature) is March (75.5°F).
Average daylight in August /
Average sunshine in August
Hana, HI
- Average daylight in August: 12h and 48min
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 and 12min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in August
Hana, HI
- Average sunshine days in August: 13.2 days
The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is November (11.2 days).
Average UV index in August
Hana, HI
- Average UV index in August: 6
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover in August
Hana, HI
- Average cloud cover in August: 26
The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is September (Cloud cover 23).
Average visibility in August
Hana, HI
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





