Marine forecast
Terrebonne Bay, LA
- current wind
- 5 kt E
- Gusts
- 8 kt
- Seas
- 1.6 ft
- Period
- 6 sec
- Air
- 82°F
Observed Tue 1:54 PM | GMZ541
- Gusts now
- 8 kt
- Seas now
- 1.6 ft · 6 sec
- Air
- 82°F
- Water
- 79°F
- 72-hr peak
- 12 kt
In brief
At 1:54 pm CDT on Oct 13, 2026, NDBC station GISL1 (Grand Isle, LA, 23 miles away) measured wind from the E at 5 kt, gusting to 8 kt; buoy 42084 measured seas of 1.6 ft. The NWS forecast for Terrebonne Bay, LA issued at 1:56 pm CDT on Oct 13, 2026 reads, for this afternoon: “Southeast winds 5 to 10 knots. Seas 1 foot or less.”
Source: National Weather Service New Orleans LA forecast; NDBC observations
Wind forecast · ktPeak 12 kt
Seas forecast · ftPeak 1 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| This Afternoon | Southeast winds 5 to 10 knots. Seas 1 foot or less. |
| Tonight | Southeast winds 5 to 10 knots. Seas 1 foot or less. |
| Wednesday | East winds 5 to 10 knots. Seas 1 foot or less. |
| Wednesday Night | East winds 10 to 15 knots. Seas 1 foot or less. |
| Thursday | East winds 10 to 15 knots. Seas 1 foot or less. |
| Thursday Night | East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds. |
| Friday | Northeast winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the morning. |
| Friday Night | Northeast winds 10 to 15 knots, increasing to 25 to 30 knots after midnight. Seas 1 foot or less, then 1 to 2 feet after midnight. Wave Detail: Northeast 2 feet at 3 seconds. |
| Saturday | Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots in the afternoon. Seas 1 to 2 feet in the morning, then 1 foot or less. Wave Detail: Northeast 2 feet at 3 seconds. |
| Saturday Night | Northeast winds 20 to 25 knots. Seas 1 to 2 feet. Wave Detail: Northeast 1 foot at 2 seconds. Winds and seas higher in and near thunderstorms. |
Issued Tue 1:56 PM by New Orleans LA (product CWFLIX).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 1:54 PM | 5 kt E | 8 kt | — | 79°F |
| Tue 12:54 PM | 5 kt ESE | 9 kt | — | 79°F |
| Tue 11:54 AM | 4 kt ESE | 7 kt | — | 79°F |
| Tue 10:54 AM | 3 kt SE | 6 kt | — | 79°F |
| Tue 9:54 AM | 3 kt SSE | 7 kt | — | 79°F |
| Tue 8:54 AM | 5 kt SE | 6 kt | — | 79°F |
| Tue 7:54 AM | 3 kt SE | 5 kt | — | 79°F |
| Tue 6:54 AM | 3 kt S | 4 kt | — | 79°F |
| Tue 5:54 AM | 3 kt SSE | 5 kt | — | 79°F |
| Tue 4:54 AM | 3 kt SSE | 4 kt | — | 79°F |
| Tue 3:54 AM | 3 kt SSE | 4 kt | — | 79°F |
| Tue 2:54 AM | 5 kt SSE | 8 kt | — | 79°F |
Observed Tue 1:54 PM at NDBC buoy GISL1 (Grand Isle, LA), 23.2 miles away. Seas from buoy 42084 (Southwest Pass Entrance W, LA (256)), 44.9 miles away, at Tue 2:00 PM.
Frequently asked questions
What is the marine forecast for Terrebonne Bay today?
This Afternoon: Southeast winds 5 to 10 knots. Seas 1 foot or less.
Is there a small craft advisory for Terrebonne Bay?
No advisories, warnings or watches are in effect for NWS zone GMZ541 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.
How high are the waves at Terrebonne Bay right now?
Seas are running 1.6 ft at a 6-second period, measured at NDBC buoy GISL1 Tue 1:54 PM, 23.2 miles from this zone. The forecast peaks at 1.0 ft Wed 1 PM.
What is the water temperature at Terrebonne Bay?
The nearest buoy read 79°F (26°C) at Tue 1:54 PM. Sea surface temperature at a single buoy can differ by several degrees from the water at a beach or in a shallow bay nearby.
What do the wind speeds in knots mean?
One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.
Where does this forecast come from?
The forecast text is the National Weather Service's own marine bulletin for zone GMZ541, issued by New Orleans LA, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.
Forecast: NOAA/NWS product CWFLIX, issued Tue 1:56 PM. Observations: NOAA National Data Buoy Center station GISL1, read Tue 1:54 PM. Retrieved Oct 13, 2:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.