Fos-sur-Mer (FRFOS) — marine weather & port guide
Fos-sur-Mer is a port in France at 43°25.0′N 4°53.0′E. Today (Aug 3): SSE wind 7–10 kn, 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 | 43°25.0′N 4°53.0′E |
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| UN/LOCODE | FRFOS |
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| Harbor size | Very small |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Fair |
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| Channel depth | 22 m |
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| Anchorage depth | 11 m |
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| Tide range | 0 m |
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| Pilotage | Compulsory |
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| Time zone | Europe/Paris |
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10-day marine forecast — Fos-sur-Mer
| Date | Wind | Gusts | Waves |
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| SSE 7–10 kn | 21 kn | — |
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| SE 1–6 kn | 14 kn | — |
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| W 3–8 kn | 19 kn | — |
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| NW 6–10 kn | 19 kn | — |
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| NW 7–11 kn | 18 kn | — |
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| NNW 3–7 kn | 8 kn | — |
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| SE 3–11 kn | 13 kn | — |
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| SW 7–7 kn | 16 kn | — |
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| SSW 9–9 kn | 19 kn | — |
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| SW 8–8 kn | 18 kn | — |
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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 Fos-sur-Mer right now?
As of the ECMWF IFS run 2026-08-03 12z: SSE wind 7–10 kn. The 10-day outlook is in the forecast table on this page and updates with each model cycle.
How big is the harbor at Fos-sur-Mer?
Fos-sur-Mer is classed as a very small harbor (coastal breakwater harbor), with fair shelter in the NGA World Port Index.
How deep is the approach to Fos-sur-Mer?
Per the NGA World Port Index, the entrance channel carries about 22 m and anchorage depths run about 11 m. Verify against current official charts before entry.
What restricts entry to Fos-sur-Mer?
Entry is affected by tidal windows. Check the live forecast on this page and official notices before approach.