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
August, having an average high-temperature of 75.4°F (24.1°C) and an average low-temperature of 68.9°F (20.5°C), is the warmest month.Humidity
In Hilo, the average relative humidity in August is 79%.Rainfall
In August, the rain falls for 19.5 days. Throughout August, 2.52" (64mm) of precipitation is accumulated. In Hilo, during the entire year, the rain falls for 227.7 days and collects up to 27.83" (707mm) of precipitation.Ocean temperature
In Hilo, in August, the average water temperature is 79.2°F (26.2°C).Note: With water temperature from 77°F (25°C) to 84.2°F (29°C), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.
Daylight
The average length of the day in August in Hilo is 12h and 47min.On the first day of August in Hilo, sunrise is at 5:56 am and sunset at 6:56 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 6:35 pm HST.
Sunshine
In August, the average sunshine in Hilo is 9h.UV index
May through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 6 during August translates into the following directions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be wary! Reflections from sand and water make UV radiation more intense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest in Hilo?
What are August temperatures in Hilo?
What is the average humidity in August in Hilo?
How many days does it rain in August in Hilo?
What is the water temperature in August in Hilo?
How many hours of daylight does Hilo have in August?
When is the sunrise / sunset in August in Hilo?
How many hours of sunshine does Hilo have in August?
When is the highest UV index in Hilo?
What is the UV index intensity in August in Hilo?
Average temperature in August
Hilo, HI
- Average high temperature in August: 75.4°F
The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is March (69.6°F).
- Average low temperature in August: 68.9°F
The month with the highest average low temperature is September (70°F).
The coldest month (with the lowest average low temperature) is March (64°F).
Average pressure in August
Hilo, 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
Hilo, HI
- Average wind speed in August: 7.6mph
The windiest month (with the highest average wind speed) is August (7.6mph).
The calmest month (with the lowest average wind speed) is October (6.7mph).
Average humidity in August
Hilo, HI
- Average humidity in August: 79%
The month with the highest relative humidity is March (80%).
The months with the lowest relative humidity are January, May, June and July (78%).
Average rainfall in August
Hilo, HI
- Average rainfall in August: 2.52"
The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is June (1.1").
Average rainfall days in August
Hilo, HI
- Average rainfall days in August: 19.5 days
The month with the highest number of rainy days is March (22.9 days).
The month with the least rainy days is January (13.3 days).
Average sea temperature in August
Hilo, 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 (75.7°F).
Average daylight in August /
Average sunshine in August
Hilo, HI
- Average daylight in August: 12h and 5min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in August: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in August
Hilo, HI
- Average sunshine days in August: 1.8 days
The month with the most sunshine days is January (12.1 days).
The month with the least sunshine days is August (1.8 days).
Average UV index in August
Hilo, HI
- Average UV index in August: 6
The months with the highest UV index are May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March and April (UV index 5).
Average cloud cover in August
Hilo, HI
- Average cloud cover in August: 33
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in August
Hilo, 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).
Hilo, Hawaii, USA
Weather forecast for your location
2. Allow the app to use your location