Hurricanes and Tornadoes That Hit Daniel Island, SC

The nearest NOAA station with 1991–2020 climate normals is Charleston International Airport, SC, 9 miles west of Daniel Island at 40 feet. July is the warmest, with an average high of 91°F and low of 74°F; January is the coolest, at 60°F and 39°F. August is the wettest at 7.0 inches of precipitation on average and November the driest at 2.7 inches; the year adds up to 52.7 inches over 74 days with at least a tenth of an inch. June to November, the hurricane season months, bring 62% of the year's precipitation (32.8 of 52.7 inches); the other six months are drier. September has brought the most of the 113 tropical systems that passed within 75 miles (35); a normal September there has highs of 85°F and 6.0 inches of precipitation. Highs reach 90°F on about 64 days a year, almost all from May to September. Lows fall below freezing on about 22 nights a year. That 52.7 inches is more than at 65 of the 78 South Carolina stations used on this site (83%). Mount Pleasant, 6 miles southeast, has its own station (Sullivans Is, SC): 51.6 inches a year, 1.1 less than here, and the same July average high, 91°F.

Water temperature at the NOAA tide station Charleston, SC, 10 miles south, averaged 86°F in July and 54°F in January over 2021–2025. It averaged 80°F or warmer from June to September. Sea level at the Charleston tide gauge, 10 miles from Daniel Island, has risen 1.38 ± 0.04 inches per decade from 1901 to 2025, NOAA's linear trend; at that pace it is 13.8 inches in a hundred years. That is faster than at 82 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 464 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Daniel Island: 235 thunderstorm wind reports, 198 flash floods, 23 lightning strikes, 5 heavy rain events and 3 floods. They killed 2 people and injured 4, and the NWS estimated $6.9 million in property and crop damage. The strongest thunderstorm gust on record here was 82 mph, on May 9, 1997. August has had the most flash floods, 84 of 198. Of the 241 South Carolina cities on this site with a flash flood on record, 235 have had fewer than Daniel Island.

Flood insurance policyholders in Daniel Island's ZIP code 29492 have filed 44 claims with the National Flood Insurance Program since 1989, and were paid $196,000 for buildings and contents, in the dollars of each year. The most came from October severe storms in 2015: 11 claims (25% of all) and $72,000. 73% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 110 South Carolina cities on this site with 10 or more claims, 50 have fewer than Daniel Island.