Greenock (GBGRK) — marine weather & port guide
Greenock is a port in United Kingdom at 55°56.0′N 4°45.0′W. Today (Aug 3): ESE wind 5–8 kn, waves 0.5–0.7 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 | 55°56.0′N 4°45.0′W |
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| UN/LOCODE | GBGRK |
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| Harbor size | Medium |
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| Harbor type | Coastal natural harbor |
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| Shelter | Fair |
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| Channel depth | 9 m |
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| Anchorage depth | 11 m |
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| Tide range | 3 m |
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| Pilotage | Compulsory |
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| Time zone | Europe/London |
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10-day marine forecast — Greenock
| Date | Wind | Gusts | Waves |
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| ESE 5–8 kn | 20 kn | 0.5–0.7 m |
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| SE 3–13 kn | 32 kn | 0.4–0.7 m |
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| WSW 2–10 kn | 26 kn | 0.5–1.6 m |
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| WNW 7–10 kn | 25 kn | 0.5–1.2 m |
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| SW 3–10 kn | 15 kn | 0.6–1.5 m |
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| S 7–13 kn | 16 kn | 1.6–2.5 m |
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| SW 5–10 kn | 13 kn | 1.7–1.8 m |
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| WSW 14–14 kn | 36 kn | 1.8–1.8 m |
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| SSW 7–7 kn | 20 kn | 0.9–0.9 m |
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| S 8–8 kn | 23 kn | 1.7–1.7 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 Greenock right now?
As of the ECMWF IFS run 2026-08-03 12z: ESE wind 5–8 kn, waves 0.5–0.7 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 Greenock?
Greenock is classed as a medium harbor (coastal natural harbor), with fair shelter in the NGA World Port Index.
How deep is the approach to Greenock?
Per the NGA World Port Index, the entrance channel carries about 9 m and anchorage depths run about 11 m. Verify against current official charts before entry.
What restricts entry to Greenock?
Entry is affected by tidal windows, overhead clearance limits. Check the live forecast on this page and official notices before approach.