August weather forecastWailuku, HI
August
Weather in August
August is marked by warm temperatures consistent with July, while rainfall shows only a slight increase. The rainfall recorded measures around 0.43" (11mm) over approximately 8.7 days. This month provides ample sunshine hours and a comfortable level of humidity. Wailuku's August weather brings plenty of opportunities for beach activities or sight-seeing around the locale.Temperature
Wailuku experiences a recorded average high-temperature of a still warm 79.5°F (26.4°C) in August, closely aligned with July's 78.8°F (26°C). During August, Wailuku's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a still moderately hot 76.3°F (24.6°C).Humidity
July and August, with an average relative humidity of 76%, are the most humid months.Rainfall
In Wailuku, in August, it is raining for 8.7 days, with typically 0.43" (11mm) of accumulated precipitation. Throughout the year, there are 103.4 rainfall days, and 6.57" (167mm) of precipitation is accumulated.Daylight
In Wailuku, the average length of the day in August is 12h and 49min.On the first day of the month, sunrise is at 6:00 am and sunset at 7:04 pm. On the last day of August, sunrise is at 6:09 am and sunset at 6:42 pm HST.
Sunshine
The average sunshine in August is 9.2h.UV index
The months with the highest UV index are July through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 7 during August leads to these instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Wailuku, HI
- Average high temperature in August: 79.5°F
The warmest month (with the highest average high temperature) is September (79.9°F).
The month with the lowest average high temperature is February (73.9°F).
- Average low temperature in August: 76.3°F
The month with the highest average low temperature is October (76.5°F).
The coldest months (with the lowest average low temperature) are February and March (70.7°F).
Average pressure in August
Wailuku, HI
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in August
Wailuku, HI
- Average wind speed in August: 13.4mph
The windiest month (with the highest average wind speed) is June (13.6mph).
The calmest month (with the lowest average wind speed) is January (10.4mph).
Average humidity in August
Wailuku, HI
- Average humidity in August: 76%
The months with the highest relative humidity are July and August (76%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall in August
Wailuku, HI
- Average rainfall in August: 0.43"
The wettest months (with the highest rainfall) are March and December (0.87").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in August
Wailuku, HI
- Average rainfall days in August: 8.7 days
The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is June (6.6 days).
Average daylight in August /
Average sunshine in August
Wailuku, 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 month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in August
Wailuku, HI
- Average sunshine days in August: 15.8 days
The month with the most sunshine days is June (19.9 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in August
Wailuku, HI
- Average UV index in August: 7
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in August
Wailuku, HI
- Average cloud cover in August: 24
The month with the most cloud cover is March (Cloud cover 30).
The months with the least cloud cover are June and September (Cloud cover 21).
Average visibility in August
Wailuku, 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).
