Buenos Aires to Antofagasta — sea route & marine weather
The sea route from Buenos Aires (ARBUE) to Antofagasta (CLANF) is about 3,662 nm — about 15 days at 10 kn. Along the route today (Aug 3): E wind 2–20 kn, waves 0.4–3.4 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 3,662 nm |
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| Passage time at 10 kn | about 15 days |
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| Great-circle distance | 910 nm |
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| Buenos Aires | 34°36.0′S 58°22.0′W |
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| Antofagasta | 23°39.0′S 70°25.0′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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| E 2–20 kn | 27 kn | 0.4–3.4 m |
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| SE 1–28 kn | 38 kn | 0.2–4.4 m |
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| ESE 2–27 kn | 37 kn | 0.1–3.5 m |
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| ESE 1–35 kn | 54 kn | 0.1–4.4 m |
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| WSW 2–36 kn | 49 kn | 0.1–5.5 m |
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| WNW 1–30 kn | 37 kn | 0.1–6.4 m |
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| WSW 3–30 kn | 37 kn | 0.3–4.3 m |
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| SSW 3–22 kn | 32 kn | 0.4–3.6 m |
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| ESE 2–20 kn | 29 kn | 0.2–2.9 m |
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| E 1–19 kn | 27 kn | 0.0–2.4 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 Buenos Aires to Antofagasta by sea?
The water route is 3,662 nm (6,782 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Antofagasta to Buenos Aires.
How long does the passage from Buenos Aires to Antofagasta take?
about 15 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 Buenos Aires and Antofagasta today?
Along the route today, per the ECMWF IFS run 2026-08-03 12z: E wind 2–20 kn, waves 0.4–3.4 m. The day-by-day table on this page covers the next 10 days.