Rio Grande to Jamestown — sea route & marine weather
The sea route from Rio Grande (BRRIG) to Jamestown (SHSHN) is about 2,867 nm — about 12 days at 10 kn. Along the route today (Aug 3): NE wind 8–18 kn, waves 1.3–3.1 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 2,867 nm |
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| Passage time at 10 kn | about 12 days |
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| Great-circle distance | 2,700 nm |
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| Rio Grande | 32°3.0′S 52°5.0′W |
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| Jamestown | 15°55.0′S 5°43.0′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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| NE 8–18 kn | 23 kn | 1.3–3.1 m |
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| NNE 4–21 kn | 29 kn | 1.6–3.0 m |
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| S 2–17 kn | 23 kn | 1.3–2.7 m |
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| NNE 5–17 kn | 22 kn | 0.9–2.7 m |
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| W 2–36 kn | 49 kn | 1.1–4.8 m |
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| WNW 2–21 kn | 26 kn | 1.2–4.9 m |
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| SW 8–23 kn | 29 kn | 1.3–3.8 m |
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| SSW 11–24 kn | 32 kn | 1.8–3.9 m |
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| S 9–22 kn | 33 kn | 2.3–4.2 m |
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| ESE 5–19 kn | 28 kn | 2.2–4.0 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 Rio Grande to Jamestown by sea?
The water route is 2,867 nm (5,310 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Jamestown to Rio Grande.
How long does the passage from Rio Grande to Jamestown take?
about 12 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 Grande and Jamestown today?
Along the route today, per the ECMWF IFS run 2026-08-03 12z: NE wind 8–18 kn, waves 1.3–3.1 m. The day-by-day table on this page covers the next 10 days.