Hurricanes and Tornadoes That Hit Port Sulphur, LA

The nearest NOAA station with 1991–2020 climate normals is Lsu Citrus Rsch Stn, LA, 4 miles northwest of Port Sulphur at 4 feet. August is the warmest, with an average high of 90°F and low of 75°F; January is the coolest, at 63°F and 46°F. July is the wettest at 8.1 inches of precipitation on average and November the driest at 3.0 inches; the year adds up to 63.9 inches over 82 days with at least a tenth of an inch. June to November, the hurricane season months, bring 56% of the year's precipitation (35.8 of 63.9 inches); the other six months are drier. September has brought the most of the 84 tropical systems that passed within 75 miles (36); a normal September there has highs of 87°F and 6.2 inches of precipitation. Highs reach 90°F on about 52 days a year, almost all from May to September. Lows fall below freezing on about 5 nights a year. That 63.9 inches is more than at 62 of the 81 Louisiana stations used on this site (77%). Buras, 21 miles southeast, has its own station (Buras, LA): 62.8 inches a year, 1.1 less than here, and the same August average high, 90°F.

Water temperature at the NOAA tide station Grand Isle, LA, 21 miles southwest, averaged 88°F in August and 59°F in January over 2021–2025. It averaged 80°F or warmer from May to September. Sea level at the Grand Isle tide gauge, 21 miles from Port Sulphur, has risen 3.59 ± 0.07 inches per decade from 1947 to 2025, NOAA's linear trend; at that pace it is 35.9 inches in a hundred years. That is faster than at 141 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 8 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Port Sulphur: 8 thunderstorm wind reports. None is recorded as killing or injuring anyone; the NWS estimated $35,000 in property and crop damage. The strongest thunderstorm gust on record here was 69 mph, on April 13, 2016.

Flood insurance policyholders in Port Sulphur's ZIP code 70083 have filed 1,533 claims with the National Flood Insurance Program since 1978, and were paid $74.0 million for buildings and contents, in the dollars of each year. The most came from Hurricane Katrina in 2005: 637 claims (42% of all) and $46.5 million, then Hurricane Isaac in 2012 with 258 and Hurricane Ida in 2021 with 201. 91% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 219 Louisiana cities on this site with 10 or more claims, 177 have fewer than Port Sulphur.