Istanbul to Samsun — sea route & marine weather
The sea route from Istanbul (TRIST) to Samsun (TRSSX) is about 390 nm — about 39 hours at 10 kn. Along the route today (Aug 3): NNE wind 1–10 kn, waves 0.2–1.1 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 390 nm |
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| Passage time at 10 kn | about 39 hours |
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| Great-circle distance | 334 nm |
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| Istanbul | 41°1.0′N 28°58.0′E |
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| Samsun | 41°17.0′N 36°20.0′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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| NNE 1–10 kn | 17 kn | 0.2–1.1 m |
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| NW 0–8 kn | 21 kn | 0.2–0.6 m |
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| NNE 0–10 kn | 14 kn | 0.3–0.6 m |
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| NE 0–10 kn | 15 kn | 0.1–0.6 m |
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| NNE 0–7 kn | 9 kn | 0.1–0.6 m |
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| NW 1–7 kn | 9 kn | 0.1–0.4 m |
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| N 1–11 kn | 14 kn | 0.2–0.8 m |
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| NNE 5–15 kn | 20 kn | 0.5–1.0 m |
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| NNE 4–12 kn | 21 kn | 0.5–1.0 m |
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| ENE 8–20 kn | 25 kn | 0.8–1.5 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 Istanbul to Samsun by sea?
The water route is 390 nm (723 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Samsun to Istanbul.
How long does the passage from Istanbul to Samsun take?
about 39 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 Istanbul and Samsun today?
Along the route today, per the ECMWF IFS run 2026-08-03 12z: NNE wind 1–10 kn, waves 0.2–1.1 m. The day-by-day table on this page covers the next 10 days.