August weather forecastPoipu, HI
August
Weather in August
As Poipu transitions into August, weather elements persist with a smooth follow-up from July. The thermal range stays at a summer peak, making it another hot month. Despite the significant sunshine hours per day, a surge in rainfall and elevated humidity adds to the tropical climate narrative. A synchronous coordination between cloud cover, daylight hours, and pressure creates a harmonious atmosphere. However, it is worth mentioning that wind gusts rise to their maximum level of the year, reaching 15.9mph (25.6km/h).Temperature
During August, the average high-temperature is a still warm 79.5°F (26.4°C), maintaining a close resemblance to that of the preceding month. Poipu maintains a minor drop in temperature during August nights, with averages of 75.7°F (24.3°C).Humidity
The months with the highest humidity are June through August, October and December, with an average relative humidity of 77%.Rainfall
In August, the rain falls for 21.1 days. Throughout August, 1.89" (48mm) of precipitation is accumulated. In Poipu, Hawaii, during the entire year, the rain falls for 218.4 days and collects up to 22.13" (562mm) of precipitation.Daylight
The average length of the day in August in Poipu is 12h and 52min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:17 pm. On the last day of August, sunrise is at 6:20 am and sunset at 6:54 pm HST.
Sunshine
The average sunshine in August is 8.4h.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 threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum high daily UV index of 6 during August translates into the following directions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Poipu, HI
- Average high temperature in August: 79.5°F
The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).
- Average low temperature in August: 75.7°F
The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in August
Poipu, HI
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).
Average wind speed in August
Poipu, HI
- Average wind speed in August: 12.1mph
The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).
Average humidity in August
Poipu, HI
- Average humidity in August: 77%
The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).
Average rainfall in August
Poipu, HI
- Average rainfall in August: 1.89"
The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").
Average rainfall days in August
Poipu, HI
- Average rainfall days in August: 21.1 days
The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).
Average daylight in August /
Average sunshine in August
Poipu, HI
- Average daylight in August: 12h and 54min
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 48min).
- Average sunshine in August: 8h and 24min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in August
Poipu, HI
- Average sunshine days in August: 2.9 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).
Average UV index in August
Poipu, 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
Poipu, HI
- Average cloud cover in August: 44
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).
Average visibility in August
Poipu, 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).
