Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The arrival of August marks a slight shift to an average high-temperature of a still moderately hot 81.5°F (27.5°C) from July's 80.8°F (27.1°C). A steady low-temperature average of 75.7°F (24.3°C) is logged during August, reflecting a modest dip from daytime readings.Heat index
The average heat index in August is evaluated at a hot 86°F (30°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In Haleiwa, the average relative humidity in August is 75%.Rainfall
In Haleiwa, Hawaii, in August, during 16.3 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Haleiwa, Hawaii, during the entire year, the rain falls for 190.2 days and collects up to 11.65" (296mm) of precipitation.Ocean temperature
In Haleiwa, the average seawater temperature in August is 79.3°F (26.3°C).Note: Swimming, diving, and similar water activities in temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are seen as very agreeable and pleasurable for lengthy periods without discomfort.
Daylight
The average length of the day in August is 12h and 51min.On the first day of the month, sunrise is at 6:05 am and sunset at 7:11 pm. On the last day of August, in Haleiwa, sunrise is at 6:15 am and sunset at 6:49 pm HST.
Sunshine
In Haleiwa, the average sunshine in August is 8.2h.UV index
January through June, August, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Haleiwa. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In August, the maximum UV index of 6 transforms into these recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. 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. Opt for tightly woven and loose clothing to enhance protection from 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
What is the average August temperature in Haleiwa?
What is the average humidity in August in Haleiwa?
How many days does it rain in August in Haleiwa?
What is the water temperature in August in Haleiwa?
What is the average length of the day in August in Haleiwa?
What time are sunrise and sunset in August in Haleiwa?
How long on average sun shines in August in Haleiwa?
What are the months with the lowest UV index in Haleiwa?
What is the UV index intensity in August in Haleiwa?
Average temperature in August
Haleiwa, HI
- Average high temperature in August: 81.5°F
The warmest month (with the highest average high temperature) is September (81.7°F).
The month with the lowest average high temperature is February (75°F).
- Average low temperature in August: 75.7°F
The months with the highest average low temperature are August and September (75.7°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).
Average pressure in August
Haleiwa, HI
- Average pressure in August: 29.99"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The month with the lowest atmospheric pressure is October (29.97"Hg).
Average wind speed in August
Haleiwa, HI
- Average wind speed in August: 10.9mph
The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is January (9mph).
Average humidity in August
Haleiwa, HI
- Average humidity in August: 75%
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are May and September (74%).
Average rainfall in August
Haleiwa, HI
- Average rainfall in August: 0.79"
The wettest months (with the highest rainfall) are February and October (1.34").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in August
Haleiwa, HI
- Average rainfall days in August: 16.3 days
The month with the highest number of rainy days is March (17.7 days).
The month with the least rainy days is January (12.5 days).
Average sea temperature in August
Haleiwa, HI
- Average sea temperature in August: 79.3°F
The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (75.2°F).
Average daylight in August /
Average sunshine in August
Haleiwa, HI
- Average daylight in August: 12h and 5min
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 1min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).
Average sunshine days in August
Haleiwa, HI
- Average sunshine days in August: 7.2 days
The month with the most sunshine days is January (12.9 days).
The month with the least sunshine days is September (6.5 days).
Average UV index in August
Haleiwa, HI
- Average UV index in August: 6
The months with the highest UV index are July and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, August, October, November and December (UV index 6).
Average cloud cover in August
Haleiwa, HI
- Average cloud cover in August: 41
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are January and September (Cloud cover 37).
Average visibility in August
Haleiwa, 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).
Haleiwa, Hawaii, USA
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