Grand Cul De Sac Bay (LCCDS) — marine weather & port guide
Grand Cul De Sac Bay is a port in St. Lucia at 13°59.0′N 61°1.0′W. Today (Aug 3): ENE wind 13–16 kn, waves 1.4–1.7 m, from the ECMWF IFS run 2026-08-03 12z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 13°59.0′N 61°1.0′W |
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| UN/LOCODE | LCCDS |
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| Harbor size | Small |
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| Harbor type | Coastal natural harbor |
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| Shelter | Good |
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| Channel depth | 23 m |
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| Tide range | 0 m |
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| Pilotage | Compulsory |
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| Time zone | America/St_Vincent |
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10-day marine forecast — Grand Cul De Sac Bay
| Date | Wind | Gusts | Waves |
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| ENE 13–16 kn | 19 kn | 1.4–1.7 m |
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| ENE 10–15 kn | 19 kn | 1.0–1.4 m |
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| ESE 10–14 kn | 19 kn | 1.0–1.1 m |
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| E 14–17 kn | 22 kn | 1.2–1.5 m |
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| ENE 15–18 kn | 23 kn | 1.5–1.6 m |
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| ENE 15–19 kn | 24 kn | 1.6–1.8 m |
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| E 14–17 kn | 21 kn | 1.6–1.7 m |
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| E 12–12 kn | 21 kn | 1.3–1.3 m |
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| E 14–14 kn | 18 kn | 1.2–1.2 m |
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| E 12–12 kn | 21 kn | 1.2–1.2 m |
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Forecast from the ECMWF IFS model run , waves from ECMWF WAM. Updated with each model cycle; the live chart below recalculates for your departure time and vessel.
Frequently asked
How is the weather at Grand Cul De Sac Bay right now?
As of the ECMWF IFS run 2026-08-03 12z: ENE wind 13–16 kn, waves 1.4–1.7 m. The 10-day outlook is in the forecast table on this page and updates with each model cycle.
How big is the harbor at Grand Cul De Sac Bay?
Grand Cul De Sac Bay is classed as a small harbor (coastal natural harbor), with good shelter in the NGA World Port Index.
How deep is the approach to Grand Cul De Sac Bay?
Per the NGA World Port Index, the entrance channel carries about 23 m. Verify against current official charts before entry.