Charlestown (GBCHF) — marine weather & port guide
Charlestown is a port in United Kingdom at 50°20.0′N 4°45.0′W. Today (Aug 3): S wind 6–11 kn, waves 0.4–0.4 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 | 50°20.0′N 4°45.0′W |
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| UN/LOCODE | GBCHF |
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| Harbor size | Very small |
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| Harbor type | Coastal tide-gate harbor |
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| Shelter | Good |
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| Anchorage depth | 9 m |
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| Tide range | 4 m |
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| Pilotage | Compulsory |
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| Time zone | Europe/London |
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10-day marine forecast — Charlestown
| Date | Wind | Gusts | Waves |
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| S 6–11 kn | 13 kn | 0.4–0.4 m |
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| SW 12–17 kn | 24 kn | 0.6–1.3 m |
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| WNW 14–17 kn | 24 kn | 0.8–1.1 m |
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| WNW 9–13 kn | 18 kn | 0.4–0.7 m |
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| WNW 4–7 kn | 9 kn | 0.2–0.3 m |
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| ESE 7–11 kn | 14 kn | 0.2–0.5 m |
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| WNW 12–12 kn | 15 kn | 0.5–0.6 m |
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| WNW 7–7 kn | 15 kn | 0.4–0.4 m |
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| ESE 14–14 kn | 18 kn | 0.6–0.6 m |
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| SW 6–6 kn | 7 kn | 0.2–0.2 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.
Frequently asked
How is the weather at Charlestown right now?
As of the ECMWF IFS run 2026-08-03 12z: S wind 6–11 kn, waves 0.4–0.4 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 Charlestown?
Charlestown is classed as a very small harbor (coastal tide-gate harbor), with good shelter in the NGA World Port Index.
How deep is the approach to Charlestown?
Per the NGA World Port Index, anchorage depths run about 9 m. Verify against current official charts before entry.
What restricts entry to Charlestown?
Entry is affected by tidal windows. Check the live forecast on this page and official notices before approach.