Southampton to Foynes — sea route & marine weather
The sea route from Southampton (GBSOU) to Foynes (IEFOV) is about 519 nm — about 2 days at 10 kn. Along the route today (Sep 18): WSW wind 14–25 kn, waves 0.8–4.7 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 519 nm |
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| Passage time at 10 kn | about 2 days |
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| Great-circle distance | 305 nm |
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| Southampton | 50°54.0′N 1°24.0′W |
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| Foynes | 52°37.0′N 9°7.0′W |
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| Reference vessel | 4.5 m draft, 10 kn cruise |
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10-day marine forecast — along the route
| Date | Wind | Gusts | Waves |
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| WSW 14–25 kn | 36 kn | 0.8–4.7 m |
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| WSW 6–23 kn | 30 kn | 1.1–4.0 m |
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| WSW 3–18 kn | 22 kn | 0.4–3.8 m |
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| S 2–10 kn | 13 kn | 0.2–2.5 m |
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| SSE 1–9 kn | 11 kn | 0.1–2.5 m |
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| NW 3–17 kn | 21 kn | 0.2–2.7 m |
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| SSE 7–19 kn | 23 kn | 0.2–3.3 m |
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| NW 5–10 kn | 17 kn | 0.3–4.8 m |
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| 2–12 kn | 16 kn | 0.2–2.7 m |
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| SSE 10–22 kn | 30 kn | 0.5–2.4 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 far is it from Southampton to Foynes by sea?
The water route is 519 nm (962 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Foynes to Southampton.
How long does the passage from Southampton to Foynes take?
about 2 days at a 10 kn cruise. Scale by your own speed: at half the speed it takes about twice as long. The planner on this page recalculates for your vessel and live weather.
What is the weather between Southampton and Foynes today?
Along the route today, per the ECMWF IFS run 2026-09-18 12z: WSW wind 14–25 kn, waves 0.8–4.7 m. The day-by-day table on this page covers the next 10 days.