September weather in Kiawah Island, SC
The average temperature in Kiawah Island in September is 77.6°F (72.5°F–82.6°F). Average precipitation: 5.25 inches.
September is a fall month in Kiawah Island, and is warmer than the annual average of 67.2°F. Daily temperatures swing about 10.1°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 11m. For travel, September is a wet month.
Avg High
82.6°F
Avg Low
72.5°F
Precipitation
5.25 in
Daylight
12h 11m
September records in Kiawah Island
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1912) | 63.0°F (1934) | 4.67 in (1983) |
| September 2 | 100.0°F (1912) | 64.0°F (1915) | 3.18 in (1949) |
| September 3 | 95.0°F (1912) | 66.0°F (1915) | 2.04 in (1955) |
| September 4 | 100.0°F (1944) | 64.9°F (1924) | 6.06 in (1979) |
| September 5 | 100.0°F (1944) | 62.1°F (1950) | 5.04 in (1987) |
| September 6 | 98.1°F (1921) | 61.0°F (1950) | 10.33 in (1933) |
| September 7 | 97.0°F (1921) | 63.0°F (1988) | 2.46 in (1991) |
| September 8 | 96.1°F (1939) | 63.0°F (1932) | 2.25 in (1937) |
| September 9 | 97.0°F (1939) | 60.1°F (1956) | 6.26 in (1988) |
| September 10 | 97.0°F (1985) | 59.0°F (1956) | 4.00 in (1912) |
| September 11 | 98.1°F (1985) | 59.0°F (1956) | 4.53 in (2017) |
| September 12 | 95.0°F (1920) | 57.9°F (1917) | 3.06 in (1958) |
| September 13 | 95.0°F (1920) | 60.1°F (1958) | 2.76 in (1955) |
| September 14 | 93.9°F (1938) | 57.9°F (1985) | 4.47 in (1976) |
| September 15 | 96.1°F (1980) | 61.0°F (1967) | 4.31 in (1991) |
| September 16 | 93.9°F (1927) | 59.0°F (1908) | 4.47 in (1924) |
| September 17 | 93.9°F (1896) | 60.1°F (1908) | 4.71 in (1945) |
| September 18 | 98.1°F (1931) | 60.1°F (1910) | 6.72 in (1928) |
| September 19 | 96.1°F (1942) | 57.0°F (1981) | 1.34 in (1982) |
| September 20 | 97.0°F (1942) | 54.0°F (1929) | 2.15 in (1952) |
| September 21 | 93.0°F (1925) | 54.0°F (1918) | 8.50 in (1998) |
| September 22 | 91.9°F (1925) | 53.1°F (1913) | 2.76 in (1952) |
| September 23 | 93.0°F (1980) | 55.0°F (1983) | 2.74 in (1947) |
| September 24 | 91.9°F (1931) | 55.9°F (1963) | 2.12 in (1947) |
| September 25 | 91.9°F (1986) | 57.0°F (1974) | 3.79 in (2002) |
| September 26 | 91.0°F (1986) | 51.1°F (1940) | 4.86 in (1894) |
| September 27 | 93.9°F (1986) | 51.1°F (1940) | 2.57 in (1894) |
| September 28 | 93.0°F (2017) | 54.0°F (1947) | 2.95 in (2005) |
| September 29 | 90.0°F (1911) | 50.0°F (1942) | 3.96 in (1959) |
| September 30 | 93.9°F (1904) | 50.0°F (1967) | 3.96 in (2022) |