Piraeus marine weather forecast
Piraeus (GRPIR) is a port in Greece at 37°56.0′N 23°37.0′E. Today (Sep 18): ESE wind 4–4 kn, waves 0.3–0.5 m, from the NOAA GFS run 2026-09-18 18z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 37°56.0′N 23°37.0′E |
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| UN/LOCODE | GRPIR |
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| Harbor size | Large |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Excellent |
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| Channel depth | 23 m |
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| Anchorage depth | 23 m |
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| Tide range | 0 m |
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| Pilotage | Compulsory |
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| Time zone | Europe/Athens |
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Facilities & services (NGA World Port Index)| Tugs | Assistance and salvage available |
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| Supplies | Fuel oil, diesel, water, provisions |
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| Repairs | Major (hull, machinery, electrical) |
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| Medical facilities | Available |
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10-day marine forecast — Piraeus
| Date | Wind | Gusts | Waves |
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| ESE 4–4 kn | 5 kn | 0.3–0.5 m |
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| SE 0–6 kn | 6 kn | 0.4–0.6 m |
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| E 1–4 kn | 4 kn | 0.6–1.0 m |
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| WSW 1–2 kn | 2 kn | 0.4–0.7 m |
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| SE 1–2 kn | 2 kn | 0.3–1.4 m |
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| SE 6–6 kn | 8 kn | 0.8–1.4 m |
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| SE 5–5 kn | 8 kn | 0.3–0.4 m |
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| SE 6–6 kn | 9 kn | 0.2–0.2 m |
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| ESE 4–4 kn | 6 kn | 1.0–1.0 m |
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| SSE 4–4 kn | 5 kn | 2.4–2.4 m |
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Forecast from the NOAA GFS 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 6 kn on Sep 25. The highest modeled significant wave height is 2.4 m on Sep 27. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Piraeus right now?
As of the NOAA GFS run 2026-09-18 18z: ESE wind 4–4 kn, waves 0.3–0.5 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 Piraeus?
Piraeus is classed as a large harbor (coastal breakwater harbor), with excellent shelter in the NGA World Port Index.
How deep is the approach to Piraeus?
Per the NGA World Port Index, the entrance channel carries about 23 m and anchorage depths run about 23 m. Verify against current official charts before entry.