Mossel Bay marine weather forecast
Mossel Bay (ZAMZY) is a port in South Africa at 34°10.5′S 22°8.8′E. Today (Sep 15): WNW wind 8–23 kn, waves 2.5–3.5 m, from the ECMWF IFS run 2026-09-15 00z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 34°10.5′S 22°8.8′E |
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| UN/LOCODE | ZAMZY |
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| Harbor size | Medium |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Good |
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| Channel depth | 8 m |
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| Anchorage depth | 20 m |
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| Tide range | 2 m |
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| Pilotage | Compulsory |
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| Time zone | Africa/Johannesburg |
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Facilities & services (NGA World Port Index)| Tugs | Assistance available |
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| Supplies | Fuel oil, diesel, water, provisions |
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| Repairs | Limited |
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| Medical facilities | Available |
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| Largest vessel | 130 m length overall, 7 m draft |
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10-day marine forecast — Mossel Bay
| Date | Wind | Gusts | Waves |
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| WNW 8–23 kn | 31 kn | 2.5–3.5 m |
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| SSE 12–15 kn | 32 kn | 3.3–3.7 m |
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| ESE 19–21 kn | 28 kn | 3.2–3.6 m |
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| E 18–23 kn | 30 kn | 3.0–3.2 m |
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| ESE 20–22 kn | 27 kn | 2.9–3.1 m |
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| SE 17–19 kn | 24 kn | 3.3–3.3 m |
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| SE 12–12 kn | 15 kn | 2.8–2.8 m |
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| NE 16–16 kn | 22 kn | 2.5–2.5 m |
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| WSW 11–11 kn | 15 kn | 1.8–1.8 m |
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| SSE 8–8 kn | 14 kn | 2.2–2.2 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.
What to watch in the forecast
Across the loaded 10-day outlook, the strongest daily modeled wind reaches 23 kn on Sep 15. The highest modeled significant wave height is 3.7 m on Sep 16. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Mossel Bay right now?
As of the ECMWF IFS run 2026-09-15 00z: WNW wind 8–23 kn, waves 2.5–3.5 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 Mossel Bay?
Mossel Bay is classed as a medium harbor (coastal breakwater harbor), with good shelter in the NGA World Port Index.
How deep is the approach to Mossel Bay?
Per the NGA World Port Index, the entrance channel carries about 8 m and anchorage depths run about 20 m. Verify against current official charts before entry.
What restricts entry to Mossel Bay?
Entry is affected by heavy swell, a traffic separation scheme, vessel traffic service participation, overhead clearance limits. Check the live forecast on this page and official notices before approach.
What is the largest vessel Mossel Bay can take?
The NGA World Port Index lists the maximum vessel at about 130 m length overall, 7 m draft. Confirm current limits with the port authority before arrival.