Yarmouth marine weather forecast
Yarmouth (GBYMO) is a port in United Kingdom at 50°42.0′N 1°30.0′W. Today (Sep 13): WSW wind 13–14 kn, waves 0.8–0.9 m, from the ECMWF IFS run 2026-09-13 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 | 50°42.0′N 1°30.0′W |
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| UN/LOCODE | GBYMO |
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| Harbor size | Small |
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| Harbor type | Coastal tide-gate harbor |
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| Shelter | Good |
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| Channel depth | 2 m |
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| Anchorage depth | 14 m |
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| Tide range | 2 m |
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| Pilotage | Compulsory |
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| Time zone | Europe/London |
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Facilities & services (NGA World Port Index)| Supplies | Fuel oil, diesel, water, provisions |
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| Repairs | Limited |
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| Medical facilities | Available |
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10-day marine forecast — Yarmouth
| Date | Wind | Gusts | Waves |
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| WSW 13–14 kn | 18 kn | 0.8–0.9 m |
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| WSW 10–12 kn | 16 kn | 0.7–0.8 m |
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| W 12–17 kn | 24 kn | 0.6–1.1 m |
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| NW 14–17 kn | 22 kn | 1.1–1.1 m |
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| W 13–21 kn | 28 kn | 1.0–1.9 m |
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| W 18–19 kn | 23 kn | 1.4–1.5 m |
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| WSW 19–19 kn | 24 kn | 1.5–1.6 m |
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| WNW 6–6 kn | 9 kn | 0.6–0.6 m |
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| WSW 13–13 kn | 16 kn | 0.6–0.6 m |
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| W 8–8 kn | 11 kn | 0.4–0.4 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 21 kn on Sep 17. The highest modeled significant wave height is 1.9 m on Sep 17. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Yarmouth right now?
As of the ECMWF IFS run 2026-09-13 12z: WSW wind 13–14 kn, waves 0.8–0.9 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 Yarmouth?
Yarmouth is classed as a small harbor (coastal tide-gate harbor), with good shelter in the NGA World Port Index.
How deep is the approach to Yarmouth?
Per the NGA World Port Index, the entrance channel carries about 2 m and anchorage depths run about 14 m. Verify against current official charts before entry.
What restricts entry to Yarmouth?
Entry is affected by tidal windows. Check the live forecast on this page and official notices before approach.