Savanna-la-Mar (JMSLM) — marine weather & port guide
Savanna-la-Mar is a port in Jamaica at 18°13.0′N 78°8.0′W. Today (Aug 3): E wind 14–17 kn, waves 1.1–1.4 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 | 18°13.0′N 78°8.0′W |
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| UN/LOCODE | JMSLM |
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| Harbor size | Very small |
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| Harbor type | Open roadstead |
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| Shelter | Poor |
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| Channel depth | 14 m |
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| Anchorage depth | 6 m |
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| Tide range | 1 m |
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| Pilotage | Compulsory |
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| Time zone | America/Jamaica |
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10-day marine forecast — Savanna-la-Mar
| Date | Wind | Gusts | Waves |
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| E 14–17 kn | 21 kn | 1.1–1.4 m |
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| ENE 11–19 kn | 24 kn | 0.9–1.4 m |
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| ENE 11–16 kn | 21 kn | 0.9–1.2 m |
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| ENE 9–14 kn | 21 kn | 0.8–1.2 m |
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| E 4–7 kn | 12 kn | 0.6–0.8 m |
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| E 10–14 kn | 17 kn | 0.9–1.0 m |
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| ENE 10–12 kn | 15 kn | 0.9–0.9 m |
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| E 13–13 kn | 18 kn | 0.9–0.9 m |
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| E 18–18 kn | 24 kn | 1.3–1.3 m |
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| E 14–14 kn | 18 kn | 1.0–1.0 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 Savanna-la-Mar right now?
As of the ECMWF IFS run 2026-08-03 12z: E wind 14–17 kn, waves 1.1–1.4 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 Savanna-la-Mar?
Savanna-la-Mar is classed as a very small harbor (open roadstead), with poor shelter in the NGA World Port Index.
How deep is the approach to Savanna-la-Mar?
Per the NGA World Port Index, the entrance channel carries about 14 m and anchorage depths run about 6 m. Verify against current official charts before entry.