January weather in Sullivan's Island, SC
The average temperature in Sullivan's Island in January is 47.8°F (36.5°F–59.2°F). Average precipitation: 3.81 inches.
January is a winter month in Sullivan's Island, and is cooler than the annual average of 65.5°F. Daily temperatures swing about 22.7°F between overnight low and afternoon high. Daylight averages about 10h 4m. For travel, January is cool.
Avg High
59.2°F
Avg Low
36.5°F
Precipitation
3.81 in
Daylight
10h 4m
January records in Sullivan's Island
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 73.9°F (1991) | 26.1°F (1977) | 2.24 in (1987) |
| January 2 | 73.9°F (1985) | 19.9°F (2018) | 0.89 in (2014) |
| January 3 | 77.0°F (1952) | 21.9°F (2008) | 1.51 in (1992) |
| January 4 | 73.9°F (2000) | 21.0°F (2008) | 1.70 in (1971) |
| January 5 | 73.0°F (2004) | 18.0°F (1981) | 1.60 in (1971) |
| January 6 | 73.0°F (2005) | 21.0°F (1959) | 0.65 in (1962) |
| January 7 | 75.0°F (2007) | 17.1°F (2014) | 2.28 in (1990) |
| January 8 | 75.9°F (2005) | 15.1°F (1996) | 1.60 in (1998) |
| January 9 | 73.9°F (2005) | 12.0°F (1970) | 1.45 in (1964) |
| January 10 | 75.0°F (2012) | 12.9°F (1970) | 0.83 in (1967) |
| January 11 | 75.9°F (1974) | 18.0°F (1970) | 0.83 in (1954) |
| January 12 | 78.1°F (1974) | 19.0°F (1981) | 3.04 in (1964) |
| January 13 | 75.0°F (2007) | 12.9°F (1982) | 1.90 in (1984) |
| January 14 | 75.0°F (2017) | 19.9°F (1973) | 1.90 in (1972) |
| January 15 | 75.0°F (2007) | 21.9°F (1994) | 1.70 in (1995) |
| January 16 | 75.9°F (1974) | 12.0°F (1994) | 1.41 in (1993) |
| January 17 | 75.9°F (1974) | 12.0°F (1994) | 1.80 in (2010) |
| January 18 | 75.9°F (1952) | 21.9°F (1976) | 0.80 in (1953) |
| January 19 | 75.0°F (2017) | 19.9°F (1977) | 1.80 in (1978) |
| January 20 | 77.0°F (2001) | 18.0°F (1994) | 1.76 in (1991) |
| January 21 | 75.0°F (1974) | 9.0°F (1985) | 1.06 in (1979) |
| January 22 | 73.0°F (2006) | 18.0°F (1985) | 2.01 in (2017) |
| January 23 | 75.0°F (1999) | 19.0°F (1970) | 3.11 in (1998) |
| January 24 | 75.9°F (1967) | 19.0°F (2003) | 1.30 in (1991) |
| January 25 | 77.0°F (1974) | 23.0°F (2005) | 1.10 in (2009) |
| January 26 | 77.0°F (1974) | 24.1°F (1982) | 1.17 in (1966) |
| January 27 | 75.9°F (1990) | 17.1°F (1986) | 1.73 in (1984) |
| January 28 | 75.9°F (1972) | 14.0°F (1986) | 1.37 in (1962) |
| January 29 | 75.9°F (2002) | 21.9°F (1977) | 1.19 in (1994) |
| January 30 | 77.0°F (1999) | 12.9°F (1966) | 4.10 in (2010) |
| January 31 | 72.0°F (2013) | 19.0°F (1966) | 0.66 in (1959) |