Río Grande (ARRGA) — marine weather & port guide
Río Grande is a port in Argentina at 53°47.0′S 67°42.0′W. Today (Aug 3): ENE wind 17–20 kn, waves 2.8–3.2 m, from the ECMWF IFS run 2026-08-03 12z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 53°47.0′S 67°42.0′W |
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| UN/LOCODE | ARRGA |
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| Harbor size | Very small |
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| Harbor type | River natural harbor |
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| Shelter | Good |
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| Tide range | 6 m |
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| Pilotage | Compulsory |
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| Time zone | America/Argentina/Ushuaia |
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10-day marine forecast — Río Grande
| Date | Wind | Gusts | Waves |
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| ENE 17–20 kn | 27 kn | 2.8–3.2 m |
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| E 15–17 kn | 22 kn | 2.5–3.2 m |
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| E 6–14 kn | 20 kn | 1.4–2.3 m |
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| N 4–12 kn | 17 kn | 1.0–1.2 m |
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| ENE 7–11 kn | 14 kn | 0.9–1.0 m |
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| S 10–27 kn | 34 kn | 0.8–1.5 m |
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| WSW 15–17 kn | 21 kn | 1.0–1.8 m |
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| SW 13–13 kn | 22 kn | 0.8–0.8 m |
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| WSW 12–12 kn | 17 kn | 0.8–0.8 m |
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| ESE 5–5 kn | 7 kn | 0.2–0.2 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 is the weather at Río Grande right now?
As of the ECMWF IFS run 2026-08-03 12z: ENE wind 17–20 kn, waves 2.8–3.2 m. The 10-day outlook is in the forecast table on this page and updates with each model cycle.
How big is the harbor at Río Grande?
Río Grande is classed as a very small harbor (river natural harbor), with good shelter in the NGA World Port Index.
What restricts entry to Río Grande?
Entry is affected by tidal windows. Check the live forecast on this page and official notices before approach.