Le Havre to Portland Harbour — sea route & marine weather
The sea route from Le Havre (FRLEH) to Portland Harbour (GBPRH) is about 117 nm — about 12 hours at 10 kn. Along the route today (Aug 3): NE wind 1–15 kn, waves 0.6–0.8 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 117 nm |
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| Passage time at 10 kn | about 12 hours |
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| Great-circle distance | 118 nm |
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| Le Havre | 49°30.0′N 0°6.0′E |
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| Portland Harbour | 50°35.0′N 2°26.0′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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| NE 1–15 kn | 19 kn | 0.6–0.8 m |
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| W 1–15 kn | 19 kn | 0.4–1.1 m |
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| WSW 15–21 kn | 28 kn | 0.9–1.7 m |
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| W 12–17 kn | 23 kn | 0.8–1.6 m |
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| WNW 5–13 kn | 18 kn | 0.3–1.1 m |
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| SW 1–7 kn | 9 kn | 0.2–0.3 m |
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| WSW 2–14 kn | 18 kn | 0.2–0.7 m |
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| W 10–10 kn | 17 kn | 0.7–0.7 m |
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| ENE 11–11 kn | 15 kn | 0.4–0.5 m |
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| ENE 7–8 kn | 11 kn | 0.3–0.4 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 Le Havre to Portland Harbour by sea?
The water route is 117 nm (217 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Portland Harbour to Le Havre.
How long does the passage from Le Havre to Portland Harbour take?
about 12 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 Le Havre and Portland Harbour today?
Along the route today, per the ECMWF IFS run 2026-08-03 12z: NE wind 1–15 kn, waves 0.6–0.8 m. The day-by-day table on this page covers the next 10 days.