Hawaii County (Hilo)
August
Weather in Hawaii County, Hawaii for August 2026
Your guide to Hawaii County weather in August - trends and predictions
So far, August 2026 in Hawaii County is slightly warmer than the historical average by 0.8 °F.
The forecast for the next days in Hawaii County predicts temperatures to be around 25 °F, close to the historical average.
In general, the average temperature in Hawaii County at the beginning of August is 24.9 °F. As the month progressed, temperatures tended to slightly increase, reaching an average of 25.1 °F by the end of August.
Hawaii County experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 130.9 mm.
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Temperatures
Rain 🌧️
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7
Dry days
24
Rainy days
0
Snow days
24°/20°
Temperatures
17 km/h
Avg max wind
74 %
Avg humidity
Hawaii County Weather August
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Temperatures trend during August in Hawaii County
See the weather trend as well as the moving average line
August weather in Hawaii County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Patchy rain possible | 24° /20° | 2 mm | 6 | |
| Aug. 2 | Patchy rain possible | 25° /20° | 1.8 mm | 6 | |
| Aug. 3 | Patchy rain possible | 25° /20° | 1.7 mm | 8 | |
| Aug. 4 | Patchy rain possible | 25° /21° | 2.2 mm | 6 | |
| Aug. 5 | Patchy rain possible | 25° /21° | 1.4 mm | 5 | |
| Aug. 6 | Patchy rain possible | 25° /20° | 0.7 mm | 6 | |
| Aug. 7 | Patchy rain possible | 25° /19° | 1.2 mm | 5 | |
| Aug. 8 | Patchy rain possible | 25° /20° | 3.9 mm | 6 | |
| Aug. 9 | Patchy rain possible | 25° /20° | 3.6 mm | 5 | |
| Aug. 10 | Patchy rain possible | 25° /21° | 4.4 mm | 5 | |
| Aug. 11 |  Moderate rain at times | 25° /20° | 2.4 mm | 6 | |
| Aug. 12 | Patchy rain possible | 25° /20° | 3.1 mm | 6 | |
| Aug. 13 | Moderate rain at times | 25° /21° | 1.8 mm | 5 | |
| Aug. 14 | Patchy rain possible | 24° /20° | 11.5 mm | 4 | |
| Aug. 15 | Patchy rain possible | 25° /20° | 72.2 mm | 4 | |
| Aug. 16 | Patchy rain possible | 25° /21° | 10 mm | 5 | |
| Aug. 17 | Moderate rain at times | 25° /22° | 9.5 mm | 4 | |
| Aug. 18 | Patchy rain possible | 25° /21° | 3.2 mm | 4 | |
| Aug. 19 |  Cloudy | 25° /21° | 2.3 mm | 4 | |
| Aug. 20 | Patchy rain possible | 26° /22° | 1 mm | 8 | |
| Aug. 21 | Patchy rain possible | 25° /21° | 2.8 mm | 5 | |
| Aug. 22 | Patchy rain possible | 25° /21° | 4.7 mm | 5 | |
| Aug. 23 |  Heavy rain at times | 25° /21° | 16.3 mm | 5 | |
| Aug. 24 | Moderate or heavy rain shower | 25° /21° | 26.8 mm | 5 | |
| Aug. 25 | Patchy rain possible | 24° /21° | 20.9 mm | 5 | |
| Aug. 26 | Patchy rain possible | 25° /24° | 5.5 mm | 11.4 | |
| Aug. 27 | Light rain shower | 25° /24° | 8.7 mm | 12.4 | |
| Aug. 28 | Patchy rain possible | 25° /24° | 10.7 mm | 6 | |
| Aug. 29 | Patchy rain possible | 25° /24° | 4.5 mm | 6 | |
| Aug. 30 | Patchy rain possible | 26° /24° | 4.5 mm | 6 | |
| Aug. 31 | Patchy rain possible | 26° /25° | 4.6 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Hawaii County in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Hawaii County forecast closer to your planned date for the most up-to-date weather information.
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Hawaii County in August - FAQ
What are the expected maximum and minimum temperatures in Hawaii County during August?
During August, expect a variety of temperatures with highs around 24° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hawaii County during August?
Significant rainfall exceeding 130.9 mm is expected in Hawaii County during August, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hawaii County during August?
The average wind speed in Hawaii County during August is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Hawaii County
Explore the daily rainfall trends and prepare for Hawaii Countys August weather 💧
Typically, Hawaii County has 24 rainy days in August with a total of 130.9 mm of rainfall.
UV exposure in Hawaii County during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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Where is Hawaii County?Get accurate weather forecasts for Hawaii County, located at latitude 19.73 and longitude -155.091. Stay updated with localized weather information tailored for Hawaii County.
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