Saint Hélier marine weather forecast
Saint Hélier (JESTH) is a port in Jersey at 49°11.0′N 2°6.0′W. Today (Sep 17): W wind 16–23 kn, waves 1.1–1.9 m, from the ECMWF IFS run 2026-09-17 00z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 49°11.0′N 2°6.0′W |
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| UN/LOCODE | JESTH |
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| Harbor size | Small |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Fair |
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| Channel depth | 2 m |
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| Anchorage depth | 19 m |
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| Tide range | 12 m |
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| Pilotage | Compulsory |
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| Time zone | Europe/Jersey |
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Facilities & services (NGA World Port Index)| Tugs | Assistance available |
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| 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 — Saint Hélier
| Date | Wind | Gusts | Waves |
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| W 16–23 kn | 31 kn | 1.1–1.9 m |
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| W 13–21 kn | 28 kn | 1.0–1.7 m |
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| WSW 19–20 kn | 27 kn | 1.6–1.7 m |
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| W 10–19 kn | 25 kn | 0.7–1.5 m |
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| WNW 2–7 kn | 9 kn | 0.3–0.6 m |
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| SSW 1–2 kn | 3 kn | 0.3–0.3 m |
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| NE 3–3 kn | 3 kn | 0.3–0.3 m |
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| E 10–10 kn | 16 kn | 0.6–0.6 m |
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| SSE 10–10 kn | 16 kn | 0.6–0.6 m |
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| WSW 5–5 kn | 16 kn | 0.8–0.8 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 23 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 Saint Hélier right now?
As of the ECMWF IFS run 2026-09-17 00z: W wind 16–23 kn, waves 1.1–1.9 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 Saint Hélier?
Saint Hélier is classed as a small harbor (coastal breakwater harbor), with fair shelter in the NGA World Port Index.
How deep is the approach to Saint Hélier?
Per the NGA World Port Index, the entrance channel carries about 2 m and anchorage depths run about 19 m. Verify against current official charts before entry.
What restricts entry to Saint Hélier?
Entry is affected by tidal windows. Check the live forecast on this page and official notices before approach.