Hilo Weather in December
Average highs run from 79°F on December 1 to 79°F on December 31, and lows from 67°F to 65°F. Normal precipitation for the month is 12.07 in over about 22 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 79°F
- Average low
- 66°F
- Precipitation
- 12.07 in
- Record high
- 93°FDec 14, 1980
- Record low
- 55°FDec 23, 1977
- Chance of a freeze
- 0%
- Daylight
- 11 h 01 min to 10 h 57 min
- Cloud cover
- 56%
- Humidity
- 82%
- Dew point
- 63°F
- Wind
- 11.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 79°F | 67°F | 86°F 1977 | 59°F 1972 | 76% |
| Dec 2 | 79°F | 67°F | 85°F 1957 | 59°F 1972 | 76% |
| Dec 3 | 79°F | 67°F | 87°F 1966 | 59°F 1956 | 76% |
| Dec 4 | 79°F | 67°F | 88°F 1966 | 59°F 1954 | 75% |
| Dec 5 | 79°F | 66°F | 86°F 1977 | 60°F 1962 | 75% |
| Dec 6 | 79°F | 66°F | 91°F 1977 | 60°F 1962 | 75% |
| Dec 7 | 79°F | 66°F | 86°F 1988 | 58°F 1958 | 74% |
| Dec 8 | 79°F | 66°F | 87°F 1995 | 57°F 1958 | 74% |
| Dec 9 | 79°F | 66°F | 88°F 1977 | 58°F 1960 | 74% |
| Dec 10 | 79°F | 66°F | 85°F 1962 | 60°F 1950 | 73% |
| Dec 11 | 79°F | 66°F | 88°F 1973 | 58°F 1989 | 73% |
| Dec 12 | 79°F | 66°F | 87°F 1980 | 60°F 1953 | 73% |
| Dec 13 | 79°F | 66°F | 87°F 1995 | 60°F 1953 | 72% |
| Dec 14 | 79°F | 66°F | 93°F 1980 | 61°F 1952 | 72% |
| Dec 15 | 79°F | 66°F | 86°F 1979 | 58°F 1989 | 71% |
| Dec 16 | 79°F | 66°F | 87°F 1968 | 57°F 2017 | 71% |
| Dec 17 | 79°F | 66°F | 86°F 1967 | 59°F 1955 | 70% |
| Dec 18 | 79°F | 66°F | 87°F 2025 | 57°F 1975 | 69% |
| Dec 19 | 79°F | 66°F | 85°F 1979 | 57°F 1969 | 69% |
| Dec 20 | 79°F | 65°F | 87°F 1964 | 58°F 1972 | 68% |
| Dec 21 | 79°F | 65°F | 90°F 1964 | 57°F 1969 | 67% |
| Dec 22 | 79°F | 65°F | 89°F 1980 | 59°F 1949 | 67% |
| Dec 23 | 79°F | 65°F | 87°F 1964 | 55°F 1977 | 66% |
| Dec 24 | 79°F | 65°F | 87°F 1980 | 56°F 1978 | 65% |
| Dec 25 | 79°F | 65°F | 87°F 1980 | 58°F 1958 | 64% |
| Dec 26 | 79°F | 65°F | 86°F 1996 | 60°F 1959 | 64% |
| Dec 27 | 79°F | 65°F | 87°F 1996 | 60°F 1951 | 63% |
| Dec 28 | 79°F | 65°F | 85°F 1968 | 59°F 1962 | 62% |
| Dec 29 | 79°F | 65°F | 86°F 1995 | 59°F 1999 | 61% |
| Dec 30 | 79°F | 65°F | 86°F 1995 | 59°F 1999 | 61% |
| Dec 31 | 79°F | 65°F | 86°F 1973 | 57°F 1958 | 60% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (HST).
- December 1
- sunrise 6:39 AM, sunset 5:40 PM
- December 31
- sunrise 6:55 AM, sunset 5:52 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00021504 (Hilo Intl AP), public domain. Records: NOAA GHCN-Daily, station USW00021504, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.