Barrow in Furness to Londonderry — sea route & marine weather
The sea route from Barrow in Furness (GBBIF) to Londonderry (GBLDY) is about 712 nm — about 3 days at 10 kn. Along the route today (Aug 3): ESE wind 5–20 kn, waves 0.9–2.1 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 712 nm |
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| Passage time at 10 kn | about 3 days |
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| Great-circle distance | 152 nm |
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| Barrow in Furness | 54°7.0′N 3°14.0′W |
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| Londonderry | 55°0.0′N 7°19.0′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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| ESE 5–20 kn | 26 kn | 0.9–2.1 m |
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| SSE 6–27 kn | 35 kn | 1.1–3.5 m |
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| SW 9–27 kn | 40 kn | 1.7–4.1 m |
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| WNW 3–16 kn | 30 kn | 0.8–2.5 m |
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| WSW 1–20 kn | 25 kn | 0.4–2.5 m |
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| SSW 4–22 kn | 27 kn | 0.5–2.7 m |
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| SW 6–23 kn | 29 kn | 1.3–3.4 m |
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| WSW 6–19 kn | 26 kn | 1.5–3.1 m |
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| SSW 6–21 kn | 28 kn | 1.0–2.3 m |
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| SW 7–13 kn | 24 kn | 1.1–2.1 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 Barrow in Furness to Londonderry by sea?
The water route is 712 nm (1,319 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Londonderry to Barrow in Furness.
How long does the passage from Barrow in Furness to Londonderry take?
about 3 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 Barrow in Furness and Londonderry today?
Along the route today, per the ECMWF IFS run 2026-08-03 12z: ESE wind 5–20 kn, waves 0.9–2.1 m. The day-by-day table on this page covers the next 10 days.