Hilo (HI)
December
Weather in Hilo, Hawaii for December 2025
Your guide to Hilo weather in December - trends and predictions
In general, the average temperature in Hilo at the beginning of December is 24 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 23.4 °F by the end of December.
The climate of Hilo in December is notably wet, with an average of 11 rainy days, and a total of 66.9 mm of precipitation.
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Temperatures
Rain 🌧️
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20
Dry days
11
Rainy days
0
Snow days
24°/19°
Temperatures
15 km/h
Avg max wind
74 %
Avg humidity
Hilo Weather December
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Temperatures trend during December in Hilo
See the weather trend as well as the moving average line
December weather in Hilo day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Cloudy | 24° /18° | 0 mm | 5 | |
| Dec. 2 |  Moderate rain at times | 24° /18° | 0.7 mm | 5 | |
| Dec. 3 |  Patchy rain possible | 24° /18° | 0.5 mm | 5 | |
| Dec. 4 |  Overcast | 25° /20° | 0 mm | 6 | |
| Dec. 5 | Cloudy | 25° /20° | 0.2 mm | 6 | |
| Dec. 6 | Overcast | 23° /19° | 0 mm | 5 | |
| Dec. 7 | Overcast | 23° /17° | 0.6 mm | 5 | |
| Dec. 8 | Patchy rain possible | 23° /18° | 0.5 mm | 5 | |
| Dec. 9 | Patchy rain possible | 22° /18° | 3.1 mm | 5 | |
| Dec. 10 | Patchy rain possible | 23° /17° | 7.1 mm | 5 | |
| Dec. 11 |  Heavy rain at times | 22° /20° | 10.2 mm | 5 | |
| Dec. 12 | Heavy rain at times | 23° /19° | 5.8 mm | 5 | |
| Dec. 13 | Moderate or heavy rain shower | 23° /21° | 7.3 mm | 5 | |
| Dec. 14 | Patchy rain possible | 23° /19° | 0.8 mm | 5 | |
| Dec. 15 | Overcast | 24° /19° | 0.1 mm | 5 | |
| Dec. 16 | Patchy rain possible | 24° /18° | 0.9 mm | 5 | |
| Dec. 17 | Patchy rain possible | 25° /19° | 0.1 mm | 6 | |
| Dec. 18 | Cloudy | 26° /19° | 0 mm | 6 | |
| Dec. 19 | Patchy rain possible | 25° /19° | 0.4 mm | 6 | |
| Dec. 20 | Cloudy | 23° /18° | 0.2 mm | 5 | |
| Dec. 21 |  Sunny | 24° /18° | 0 mm | 6 | |
| Dec. 22 | Overcast | 25° /20° | 0.1 mm | 6 | |
| Dec. 23 | Heavy rain at times | 22° /18° | 9.6 mm | 5 | |
| Dec. 24 | Overcast | 22° /15° | 0.4 mm | 5 | |
| Dec. 25 | Patchy rain possible | 23° /16° | 0.3 mm | 5 | |
| Dec. 26 | Overcast | 24° /18° | 0.2 mm | 5 | |
| Dec. 27 | Overcast | 25° /20° | 1.1 mm | 6 | |
| Dec. 28 | Cloudy | 24° /20° | 3.7 mm | 5 | |
| Dec. 29 | Patchy rain possible | 22° /19° | 1.6 mm | 5 | |
| Dec. 30 | Patchy rain possible | 23° /19° | 6.4 mm | 5 | |
| Dec. 31 | Patchy rain possible | 23° /19° | 4.9 mm | 5 | |
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Important Notice
Our weather forecast for Hilo in December 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.
Change Month
Hilo in December - FAQ
What are the expected maximum and minimum temperatures in Hilo during December?
During December, expect a variety of temperatures with highs around 24° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hilo during December?
Moderate rainfall is anticipated in Hilo during December, with a total of 66.9 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Hilo during December?
The average wind speed in Hilo during December is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Hilo
Explore the daily rainfall trends and prepare for Hilos December weather 💧
UV exposure in Hilo during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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