Heraklion (Iraklion) to Thessaloníki — sea route & marine weather
The sea route from Heraklion (Iraklion) (GRHER) to Thessaloníki (GRSKG) is about 370 nm — about 37 hours at 10 kn. Along the route today (Aug 3): WNW wind 2–14 kn, waves 0.3–0.7 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 370 nm |
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| Passage time at 10 kn | about 37 hours |
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| Great-circle distance | 335 nm |
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| Heraklion (Iraklion) | 35°20.0′N 25°10.0′E |
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| Thessaloníki | 40°38.0′N 22°57.0′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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| WNW 2–14 kn | 19 kn | 0.3–0.7 m |
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| WNW 0–18 kn | 23 kn | 0.4–1.0 m |
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| NNW 1–19 kn | 24 kn | 0.6–1.0 m |
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| NNW 1–19 kn | 24 kn | 0.6–1.1 m |
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| NW 0–17 kn | 21 kn | 0.5–0.9 m |
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| WNW 3–21 kn | 27 kn | 0.4–1.1 m |
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| NNW 3–21 kn | 26 kn | 0.5–1.3 m |
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| NNW 3–21 kn | 31 kn | 0.9–1.4 m |
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| NW 5–22 kn | 30 kn | 0.8–1.6 m |
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| NW 3–22 kn | 32 kn | 0.7–1.7 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 Heraklion (Iraklion) to Thessaloníki by sea?
The water route is 370 nm (685 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Thessaloníki to Heraklion (Iraklion).
How long does the passage from Heraklion (Iraklion) to Thessaloníki take?
about 37 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 Heraklion (Iraklion) and Thessaloníki today?
Along the route today, per the ECMWF IFS run 2026-08-03 12z: WNW wind 2–14 kn, waves 0.3–0.7 m. The day-by-day table on this page covers the next 10 days.