Rio de Janeiro to Rio Grande — sea route & marine weather
The sea route from Rio de Janeiro (BRRIO) to Rio Grande (BRRIG) is about 823 nm — about 3 days at 10 kn. Along the route today (Sep 17): ENE wind 4–16 kn, waves 1.4–2.4 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 823 nm |
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| Passage time at 10 kn | about 3 days |
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| Great-circle distance | 725 nm |
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| Rio de Janeiro | 22°54.0′S 43°10.0′W |
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| Rio Grande | 32°3.0′S 52°5.0′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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| ENE 4–16 kn | 18 kn | 1.4–2.4 m |
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| ENE 9–20 kn | 24 kn | 1.1–2.2 m |
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| ENE 14–23 kn | 33 kn | 1.2–2.5 m |
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| ENE 9–33 kn | 43 kn | 1.8–3.9 m |
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| NNW 9–23 kn | 29 kn | 1.3–2.9 m |
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| 4–16 kn | 25 kn | 1.1–2.7 m |
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| SSW 5–15 kn | 16 kn | 1.1–3.0 m |
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| NE 5–22 kn | 30 kn | 1.9–2.6 m |
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| 10–17 kn | 26 kn | 1.4–2.1 m |
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| ENE 9–20 kn | 29 kn | 1.2–3.4 m |
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Forecast from the NOAA GFS 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 Rio de Janeiro to Rio Grande by sea?
The water route is 823 nm (1,524 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Rio Grande to Rio de Janeiro.
How long does the passage from Rio de Janeiro to Rio Grande take?
about 3 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 Rio de Janeiro and Rio Grande today?
Along the route today, per the NOAA GFS run 2026-09-17 06z: ENE wind 4–16 kn, waves 1.4–2.4 m. The day-by-day table on this page covers the next 10 days.