Hilo (HI)
August
Weather in Hilo, Hawaii for August 2025
Your guide to Hilo weather in August - trends and predictions
Until now, August 2025 in Hilo is slightly cooler than the historical average by -0.9 °F.
The forecast for the next days in Hilo predicts temperatures to be around 24 °F, close to the historical average.
In general, the average temperature in Hilo at the beginning of August is 24.1 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 24 °F by the end of August.
Hilo experiences heavy rainfall in August, with over 20 rainy days and an average total precipitation 221.7 mm.
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Temperatures
Rain 🌧️
More
8
Dry days
23
Rainy days
0
Snow days
25°/21°
Temperatures
17 km/h
Avg max wind
76 %
Avg humidity
Hilo Weather August
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Temperatures trend during August in Hilo
See the weather trend as well as the moving average line
August weather in Hilo day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Sunny | 24° /20° | 0.9 mm | 6 | |
| Aug. 2 |  Patchy rain possible | 24° /20° | 1.6 mm | 6 | |
| Aug. 3 | Patchy rain possible | 24° /20° | 1.6 mm | 5 | |
| Aug. 4 | Patchy rain possible | 24° /20° | 0.6 mm | 6 | |
| Aug. 5 | Patchy rain possible | 24° /20° | 0.7 mm | 6 | |
| Aug. 6 |  Overcast | 24° /20° | 0.4 mm | 6 | |
| Aug. 7 | Patchy rain possible | 25° /19° | 1.4 mm | 6 | |
| Aug. 8 | Patchy rain possible | 24° /20° | 1.9 mm | 5 | |
| Aug. 9 | Patchy rain possible | 24° /19° | 2.1 mm | 5 | |
| Aug. 10 | Patchy rain possible | 24° /20° | 1.3 mm | 5 | |
| Aug. 11 |  Moderate rain at times | 25° /20° | 2.4 mm | 6 | |
| Aug. 12 | Moderate or heavy rain shower | 24° /21° | 4 mm | 5 | |
| Aug. 13 | Moderate rain at times | 25° /21° | 1.5 mm | 6 | |
| Aug. 14 | Patchy rain possible | 24° /20° | 0.6 mm | 5 | |
| Aug. 15 | Patchy rain possible | 25° /20° | 0.8 mm | 6 | |
| Aug. 16 | Patchy rain possible | 24° /20° | 1 mm | 5 | |
| Aug. 17 | Moderate rain at times | 24° /21° | 2.5 mm | 5 | |
| Aug. 18 | Patchy rain possible | 25° /22° | 3.1 mm | 2.9 | |
| Aug. 19 | Patchy rain possible | 23° /21° | 2.5 mm | 3 | |
| Aug. 20 | Patchy rain possible | 23° /21° | 2.2 mm | 2.8 | |
| Aug. 21 | Patchy rain possible | 23° /21° | 3.8 mm | 2.1 | |
| Aug. 22 | Patchy rain possible | 23° /21° | 3.5 mm | 0 | |
| Aug. 23 | Patchy rain possible | 25° /22° | 0.9 mm | 5 | |
| Aug. 24 | Patchy rain possible | 25° /22° | 0.4 mm | 5 | |
| Aug. 25 | Patchy rain possible | 24° /21° | 0.3 mm | 5 | |
| Aug. 26 | Patchy rain possible | 24° /22° | 0.5 mm | 5 | |
| Aug. 27 | Patchy rain possible | 23° /22° | 0.3 mm | 5 | |
| Aug. 28 | Patchy rain possible | 24° /21° | 0.8 mm | 5 | |
| Aug. 29 | Patchy rain possible | 25° /22° | 2 mm | 5 | |
| Aug. 30 | Patchy rain possible | 26° /22° | 2.3 mm | 5 | |
| Aug. 31 | Patchy rain possible | 22° /21° | 1.5 mm | 5 | |
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Important Notice
Our weather forecast for Hilo 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 Hilo forecast closer to your planned date for the most up-to-date weather information.
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Hilo in August - FAQ
What are the expected maximum and minimum temperatures in Hilo during August?
During August, expect a variety of temperatures with highs around 25° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hilo during August?
Significant rainfall exceeding 221.7 mm is expected in Hilo during August, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hilo during August?
The average wind speed in Hilo during August is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Hilo
Explore the daily rainfall trends and prepare for Hilos August weather 💧
UV exposure in Hilo during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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