Tramandaí marine weather forecast
Tramandaí (BRTRM) is a port in Brazil at 29°59.0′S 50°7.0′W. Today (Sep 18): NE wind 12–16 kn, waves 1.4–1.7 m, from the ECMWF IFS run 2026-09-18 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 | 29°59.0′S 50°7.0′W |
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| UN/LOCODE | BRTRM |
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| Harbor size | Small |
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| Harbor type | Open roadstead |
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| Shelter | Poor |
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| Channel depth | 20 m |
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| Anchorage depth | 20 m |
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| Tide range | 1 m |
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| Pilotage | Compulsory |
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| Time zone | America/Sao_Paulo |
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Facilities & services (NGA World Port Index)| Tugs | Assistance available |
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| Supplies | Provisions |
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| Repairs | Limited |
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| Medical facilities | Available |
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10-day marine forecast — Tramandaí
| Date | Wind | Gusts | Waves |
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| NE 12–16 kn | 20 kn | 1.4–1.7 m |
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| NE 19–23 kn | 30 kn | 1.5–2.2 m |
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| NNE 10–31 kn | 39 kn | 2.7–3.7 m |
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| N 12–14 kn | 17 kn | 2.1–2.8 m |
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| SW 11–24 kn | 30 kn | 1.8–2.8 m |
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| SSW 14–22 kn | 28 kn | 3.0–3.2 m |
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| NE 7–9 kn | 12 kn | 2.9–3.3 m |
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| NNE 18–18 kn | 27 kn | 2.1–2.1 m |
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| N 10–10 kn | 18 kn | 1.5–1.5 m |
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| ESE 14–14 kn | 18 kn | 1.2–1.2 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.
What to watch in the forecast
Across the loaded 10-day outlook, the strongest daily modeled wind reaches 31 kn on Sep 20. The highest modeled significant wave height is 3.7 m on Sep 20. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Tramandaí right now?
As of the ECMWF IFS run 2026-09-18 12z: NE wind 12–16 kn, waves 1.4–1.7 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 Tramandaí?
Tramandaí is classed as a small harbor (open roadstead), with poor shelter in the NGA World Port Index.
How deep is the approach to Tramandaí?
Per the NGA World Port Index, the entrance channel carries about 20 m and anchorage depths run about 20 m. Verify against current official charts before entry.
What restricts entry to Tramandaí?
Entry is affected by tidal windows, heavy swell. Check the live forecast on this page and official notices before approach.