Portland Harbour (GBPRH) — marine weather & port guide
Portland Harbour is a port in United Kingdom at 50°35.0′N 2°26.0′W. Today (Aug 3): S wind 1–4 kn, waves 0.6–0.8 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°35.0′N 2°26.0′W |
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| UN/LOCODE | GBPRH |
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| Harbor size | Medium |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Fair |
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| Channel depth | 11 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 | Europe/London |
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10-day marine forecast — Portland Harbour
| Date | Wind | Gusts | Waves |
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| S 1–4 kn | 5 kn | 0.6–0.8 m |
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| SW 8–15 kn | 19 kn | 0.6–1.1 m |
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| WSW 15–21 kn | 28 kn | 1.2–1.6 m |
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| WNW 12–16 kn | 22 kn | 0.8–1.3 m |
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| NW 5–9 kn | 13 kn | 0.3–0.7 m |
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| ESE 3–7 kn | 9 kn | 0.2–0.3 m |
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| WSW 10–14 kn | 18 kn | 0.3–0.7 m |
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| WNW 10–10 kn | 17 kn | 0.7–0.7 m |
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| E 11–11 kn | 15 kn | 0.5–0.5 m |
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| ENE 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.
Frequently asked
How is the weather at Portland Harbour right now?
As of the ECMWF IFS run 2026-08-03 12z: S wind 1–4 kn, waves 0.6–0.8 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 Portland Harbour?
Portland Harbour is classed as a medium harbor (coastal breakwater harbor), with fair shelter in the NGA World Port Index.
How deep is the approach to Portland Harbour?
Per the NGA World Port Index, the entrance channel carries about 11 m and anchorage depths run about 20 m. Verify against current official charts before entry.
What restricts entry to Portland Harbour?
Entry is affected by tidal windows, heavy swell. Check the live forecast on this page and official notices before approach.