Typical December weather
Hilo
Hawaii · December
79° days
66° nights
about 16 rainy days · 11 hours of daylight · ocean 79°
What to pack
- Umbrella
- Swimsuit
- Sunscreen
What December feels like
December is holiday season without holiday crowds on this side of the island. Mauna Kea takes snow most winters, and pickup trucks coming down the Saddle Road with snow piled in the bed is about as Hilo a Christmas image as there is.
This is the wet season: rain on about 16 days, so pack accordingly. It’s sticky — light fabrics and an afternoon break earn their keep.
Can you swim?
The ocean runs about 79° — bath-warm.
The numbers
| Typical high | 79° |
|---|---|
| Typical low | 66° |
| Days with real rain | 16 |
| Total rain | 12.1 in |
| Humidity | sticky |
| Water temperature | 79° |
| Sunrise / sunset (mid-month) | 6:47 am / 5:44 pm |