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Coldest beach in Texas in September

84 coastal locations in Texas ranked by their typical September sea temperature. State-wide average in September: 29.5°C.

Coldest in September

Port Arthur

29.3°C

State September average

29.5°C

across 84 coastal locations in Texas

Vs annual mean

+5.7°C

above the year-round state average

What the Texas water feels like in September

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

Texas monthly average 16.0°C to 30.1°C
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  • Warmest month August 30.1°C
  • Coldest month February 16.0°C
  • Annual mean 23.8°C
  • Months above 20°C 8 of 12

Where September fits in the year

September sits inside the state pattern shown on the left. Browse a different month for a fresh ranking.

Texas sea temperature map (live)

Today's reading at every Texas beach we track. The list below uses the typical September mean from a decade of daily history.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 coldest Texas beaches in September

Sorted by typical September mean. Click any beach for the full location page.

# Location September mean
1 Arroyo City Texas 29.5°C
2 Matagorda Texas 29.5°C
3 Port Isabel Texas 29.5°C
4 Freeport Texas 29.5°C
5 Surfside Beach Texas 29.5°C
6 Laguna Vista Texas 29.5°C
7 Brownsville Texas 29.5°C
8 Galveston Pier 21, Galveston Channel Texas 29.5°C
9 Galveston Pleasure Pier, Gulf Of Mexico Texas 29.5°C
10 Galveston Railroad Bridge Texas 29.5°C
11 Jamaica Beach, West Bay, Galveston Bay, Texas Texas 29.5°C
12 Port Bolivar, Galveston Bay Texas 29.5°C
13 Texas City, Turning Basin, Galveston Bay, Texas Texas 29.5°C
14 Alligator Point, West Bay, Texas Texas 29.5°C
15 Christmas Bay, Texas Texas 29.5°C
16 Clear Lake, Galveston Bay Texas 29.5°C
17 Houston Ship Channel, Galveston Bay, Manchester Texas 29.5°C
18 San Luis Pass (TCOON) Texas 29.5°C
19 San Luis Pass, Texas Texas 29.5°C
20 Sabine Bank Lighthouse, Texas Texas 29.4°C
21 Sabine (offshore) Texas 29.4°C
22 Gilchrist, East Bay, Galveston Bay, Texas Texas 29.4°C
23 High Island (TCOON) Texas 29.4°C
24 Barbours Cut, Morgans Point, Galveston Bay Texas 29.4°C
25 Galveston Bay Entrance, North Jetty Texas 29.4°C
Show 25 more ▸
26 Galveston Bay entrance, south jetty, Texas Texas 29.4°C
27 Lynchburg Landing, San Jacinto River, Galveston Bay Texas 29.4°C
28 Point Barrow, Trinity Bay, Galveston Bay, Texas Texas 29.4°C
29 Rollover Pass Texas 29.4°C
30 Round Point, Trinity Bay, Galveston Bay Texas 29.4°C
31 San Jacinto Battleground State Historic Site Texas 29.4°C
32 Umbrella Point, Trinity Bay Texas 29.4°C
33 Crystal Beach Texas 29.4°C
34 Galveston Texas 29.4°C
35 San Leon Texas 29.4°C
36 Clear Lake Shores Texas 29.4°C
37 El Lago Texas 29.4°C
38 Houston Texas 29.4°C
39 Kemah Texas 29.4°C
40 Seabrook Texas 29.4°C
41 Shoreacres Texas 29.4°C
42 Mesquite Point, Sabine Pass Texas 29.4°C
43 Orange (Old Navy Base) Texas 29.4°C
44 Rainbow Bridge, Neches River Texas 29.4°C
45 Sabine Pass (jetty), Texas Texas 29.4°C
46 Sabine Pass (north) Texas 29.4°C
47 Texas Point, Sabine Pass Texas 29.4°C
48 Anahuac Texas 29.3°C
49 Trinity Bay Texas 29.3°C
50 Port Arthur Texas 29.3°C

Warmest 10 in Texas in September

Same data flipped. The warmest spots in the state for this month.

# Location September mean
1 Port Lavaca, Lavaca Causeway, Matagorda Bay Texas 29.8°C
2 Seadrift, San Antonio Bay Texas 29.8°C
3 Matagorda Bay Entrance Channel Texas 29.7°C
4 Realitos Peninsula Texas 29.7°C
5 Aransas Wildlife Refuge (TCOON) Texas 29.7°C
6 Copano Bay State Fishing Pier Texas 29.7°C
7 Aransas, Aransas Pass Texas 29.7°C
8 Corpus Christi, Gulf Of Mexico Texas 29.7°C
9 Corpus Christi Naval Air Station Texas 29.7°C
10 Nueces Bay (TCOON) Texas 29.7°C

Other US states

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