Liverpool to Cobh — sea route & marine weather
The sea route from Liverpool (GBLIV) to Cobh (IECOB) is about 308 nm — about 31 hours at 10 kn. Along the route today (Aug 3): SSE wind 4–19 kn, waves 0.5–1.6 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 308 nm |
|---|
| Passage time at 10 kn | about 31 hours |
|---|
| Great-circle distance | 215 nm |
|---|
| Liverpool | 53°25.0′N 3°0.0′W |
|---|
| Cobh | 51°51.0′N 8°18.0′W |
|---|
| Reference vessel | 4.5 m draft, 10 kn cruise |
|---|
10-day marine forecast — along the route
| Date | Wind | Gusts | Waves |
|---|
| SSE 4–19 kn | 25 kn | 0.5–1.6 m |
|---|
| S 4–18 kn | 26 kn | 0.5–1.9 m |
|---|
| WSW 8–19 kn | 30 kn | 1.1–2.0 m |
|---|
| WNW 4–16 kn | 23 kn | 0.6–1.7 m |
|---|
| SW 3–6 kn | 7 kn | 0.4–0.7 m |
|---|
| W 1–18 kn | 23 kn | 0.4–1.8 m |
|---|
| WSW 6–15 kn | 18 kn | 0.8–2.0 m |
|---|
| W 6–11 kn | 20 kn | 0.9–2.0 m |
|---|
| SE 5–15 kn | 26 kn | 0.3–1.4 m |
|---|
| SW 4–9 kn | 18 kn | 0.5–1.4 m |
|---|
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 Liverpool to Cobh by sea?
The water route is 308 nm (570 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Cobh to Liverpool.
How long does the passage from Liverpool to Cobh take?
about 31 hours 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 Liverpool and Cobh today?
Along the route today, per the ECMWF IFS run 2026-08-03 12z: SSE wind 4–19 kn, waves 0.5–1.6 m. The day-by-day table on this page covers the next 10 days.