Bremerhaven to Boulogne-sur-Mer — sea route & marine weather
The sea route from Bremerhaven (DEBRV) to Boulogne-sur-Mer (FRBOL) is about 355 nm — about 36 hours at 10 kn. Along the route today (Nov 1): wind 1–9 kn, waves 0.3–1.5 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 355 nm |
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| Passage time at 10 kn | about 36 hours |
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| Great-circle distance | 309 nm |
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| Bremerhaven | 53°32.0′N 8°36.0′E |
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| Boulogne-sur-Mer | 50°43.0′N 1°37.0′E |
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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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| 1–9 kn | 14 kn | 0.3–1.5 m |
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| 3–24 kn | 32 kn | 0.9–2.7 m |
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| NE 3–24 kn | 32 kn | 1.0–2.7 m |
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| ENE 5–22 kn | 30 kn | 0.6–2.0 m |
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| E 6–18 kn | 25 kn | 0.4–1.8 m |
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| E 2–11 kn | 14 kn | 0.5–1.2 m |
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| SSE 3–9 kn | 11 kn | 0.3–0.9 m |
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| SSW 5–13 kn | 19 kn | 0.4–1.2 m |
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| 4–9 kn | 17 kn | 0.6–1.0 m |
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| S 4–11 kn | 29 kn | 1.4–2.5 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 Bremerhaven to Boulogne-sur-Mer by sea?
The water route is 355 nm (658 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Boulogne-sur-Mer to Bremerhaven.
How long does the passage from Bremerhaven to Boulogne-sur-Mer take?
about 36 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 Bremerhaven and Boulogne-sur-Mer today?
Along the route today, per the ECMWF IFS run 2026-11-01 12z: wind 1–9 kn, waves 0.3–1.5 m. The day-by-day table on this page covers the next 10 days.