OBX Water Temperature — Month by Month Outer Banks Sea Temps
Average ocean water temperatures along the North Carolina Outer Banks by month, with notes for surfers, swimmers, and surf fishermen.
Ocean water temperature on the Outer Banks is one of the most variable along the US East Coast. The Gulf Stream sits just offshore, the cold Labrador Current slides down from the north, and the two converge near Cape Hatteras. The result: water temperatures can swing 15°F in a few days depending on wind direction. Northeast winds push cold upwelled water onto the beach. Southwest winds shove warm Gulf Stream water inshore. This page lists the typical monthly ranges based on NOAA buoy and station averages.
Monthly average OBX water temperature
| Month | Avg low | Avg high | Notes |
|---|---|---|---|
| January | 44°F | 50°F | Coldest of the year. Wetsuit required. |
| February | 43°F | 48°F | Bottom of the trough. Sea breeze still raw. |
| March | 46°F | 54°F | Slow warmup. First citation drum show up. |
| April | 54°F | 62°F | Big swings day to day. Cobia begin showing. |
| May | 62°F | 70°F | Swimmable on warm days. Drum and stripers active. |
| June | 70°F | 76°F | Comfortable swimming. Pompano move in. |
| July | 76°F | 82°F | Warmest month. Spanish mackerel runs. |
| August | 76°F | 82°F | Peak warmth. Watch for rip currents on long-period swell. |
| September | 72°F | 78°F | Still warm. Hurricane season peak. |
| October | 64°F | 72°F | Fall drum run. Best surf fishing of the year. |
| November | 56°F | 64°F | Big drum still around. Wetsuit weather returns. |
| December | 48°F | 54°F | Striper run for those willing to brave the cold. |
Why OBX water temperatures swing so much
The Outer Banks sits at the meeting point of two major ocean currents. The Gulf Stream carries 80°F+ tropical water north along the edge of the continental shelf, passing within 12 to 20 miles of Cape Hatteras. The Labrador Current pushes cold sub-arctic water south. When persistent northeast winds blow, surface water on the beach gets pushed offshore and cold deep water upwells in its place — sometimes dropping the surf temperature 10 to 15°F in 24 hours. Read more in our Gulf Stream & ocean currents factor page.
Live water temperature data sources
- NOAA Station 8651370 (Duck FRF Pier) — live water temp on the northern OBX
- NOAA Station 8654467 (Hatteras) — Hatteras Inlet water temp
- NOAA Buoy 41025 (Diamond Shoals) — offshore Cape Hatteras
- NDBC Buoy 44095 (Oregon Inlet) — wave height and water temp
Water temp and surf fishing
Water temperature is one of the biggest drivers of what species you can catch on the OBX:
- 50-58°F: Striped bass run (winter into early spring)
- 58-65°F: Big red drum, sea mullet, blackfish
- 65-72°F: Bluefish, Spanish mackerel, cobia push through
- 72-80°F: Pompano, flounder, summer drum, sharks
- 80°F+: King mackerel, Spanish, tarpon (rare)
For tide-driven fishing windows once you know the water temp, see our OBX surf fishing guide. Sister-site OuterBanksSurfFishing.com goes deeper on seasonal patterns and rigs.