December weather in Sullivan's Island, SC
The average temperature in Sullivan's Island in December is 51.0°F (39.8°F–62.1°F). Average precipitation: 3.62 inches.
December is a winter month in Sullivan's Island, and is cooler than the annual average of 65.5°F. Daily temperatures swing about 22.3°F between overnight low and afternoon high. Daylight averages about 9h 51m. For travel, December is a comfortable month to visit.
Avg High
62.1°F
Avg Low
39.8°F
Precipitation
3.62 in
Daylight
9h 51m
December records in Sullivan's Island
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 82.9°F (2009) | 27.0°F (1964) | 1.36 in (1977) |
| December 2 | 80.1°F (1998) | 27.0°F (2020) | 1.30 in (1996) |
| December 3 | 75.9°F (1970) | 26.1°F (2008) | 3.90 in (1971) |
| December 4 | 78.1°F (1970) | 26.1°F (1966) | 2.22 in (1964) |
| December 5 | 79.0°F (1998) | 25.0°F (1970) | 2.20 in (1994) |
| December 6 | 75.0°F (1978) | 28.0°F (1969) | 1.95 in (1954) |
| December 7 | 79.0°F (2001) | 26.1°F (1954) | 1.35 in (2025) |
| December 8 | 80.1°F (1998) | 19.9°F (1984) | 1.10 in (1973) |
| December 9 | 78.1°F (1998) | 25.0°F (2006) | 1.37 in (2018) |
| December 10 | 84.0°F (1987) | 28.9°F (1977) | 0.84 in (2002) |
| December 11 | 78.1°F (2007) | 23.0°F (1977) | 3.30 in (1993) |
| December 12 | 75.9°F (2007) | 19.9°F (1957) | 1.90 in (1982) |
| December 13 | 77.0°F (1971) | 12.0°F (1962) | 2.00 in (2011) |
| December 14 | 79.0°F (2001) | 23.0°F (2005) | 2.50 in (2019) |
| December 15 | 75.9°F (1971) | 23.0°F (1988) | 2.01 in (2018) |
| December 16 | 78.1°F (1971) | 23.0°F (2010) | 1.70 in (1973) |
| December 17 | 75.0°F (1971) | 19.9°F (2007) | 3.10 in (2023) |
| December 18 | 78.1°F (1971) | 12.0°F (2000) | 1.10 in (2005) |
| December 19 | 78.1°F (1971) | 19.0°F (1975) | 2.30 in (2009) |
| December 20 | 79.0°F (2008) | 10.9°F (2000) | 1.70 in (1971) |
| December 21 | 73.9°F (1988) | 24.1°F (1981) | 1.40 in (2007) |
| December 22 | 75.0°F (2013) | 14.0°F (2000) | 1.27 in (1994) |
| December 23 | 80.1°F (1998) | 17.1°F (1989) | 2.30 in (2019) |
| December 24 | 78.1°F (2015) | 19.0°F (2022) | 2.19 in (2019) |
| December 25 | 73.9°F (1978) | 25.0°F (1967) | 2.01 in (2023) |
| December 26 | 77.0°F (2015) | 12.9°F (1983) | 1.70 in (2023) |
| December 27 | 78.1°F (2015) | 19.0°F (2000) | 0.83 in (2012) |
| December 28 | 79.0°F (2015) | 18.0°F (2000) | 1.50 in (2011) |
| December 29 | 78.1°F (1971) | 15.1°F (2000) | 1.16 in (1983) |
| December 30 | 75.0°F (1971) | 14.0°F (2000) | 1.36 in (1982) |
| December 31 | 78.1°F (1990) | 23.0°F (1983) | 1.67 in (1981) |