Guanica marine weather forecast
Guanica (PRGUX) is a port in Puerto Rico at 17°58.0′N 66°55.0′W. Today (Sep 14): E wind 12–14 kn, waves 1.0–1.1 m, from the NOAA GFS run 2026-09-14 06z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 17°58.0′N 66°55.0′W |
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| UN/LOCODE | PRGUX |
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| Harbor size | Small |
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| Harbor type | Open roadstead |
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| Shelter | Good |
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| Channel depth | 9 m |
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| Anchorage depth | 8 m |
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| Tide range | 0 m |
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| Pilotage | Compulsory |
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| Time zone | America/Puerto_Rico |
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Facilities & services (NGA World Port Index)| Tugs | Assistance available |
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| Supplies | Fuel oil, water |
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| Repairs | Limited |
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| Medical facilities | Available |
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10-day marine forecast — Guanica
| Date | Wind | Gusts | Waves |
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| E 12–14 kn | 16 kn | 1.0–1.1 m |
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| E 14–16 kn | 17 kn | 1.0–1.2 m |
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| ENE 15–17 kn | 19 kn | 1.1–1.2 m |
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| E 11–17 kn | 19 kn | 1.1–1.4 m |
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| E 18–18 kn | 20 kn | 1.1–1.4 m |
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| ESE 9–9 kn | 10 kn | 1.0–1.2 m |
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| ESE 11–11 kn | 12 kn | 0.9–0.9 m |
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| E 8–8 kn | 7 kn | 0.7–0.7 m |
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| SE 7–7 kn | 8 kn | 0.6–0.6 m |
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| ENE 14–14 kn | 15 kn | 0.8–0.8 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.
What to watch in the forecast
Across the loaded 10-day outlook, the strongest daily modeled wind reaches 18 kn on Sep 18. The highest modeled significant wave height is 1.4 m on Sep 17. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Guanica right now?
As of the NOAA GFS run 2026-09-14 06z: E wind 12–14 kn, waves 1.0–1.1 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 Guanica?
Guanica is classed as a small harbor (open roadstead), with good shelter in the NGA World Port Index.
How deep is the approach to Guanica?
Per the NGA World Port Index, the entrance channel carries about 9 m and anchorage depths run about 8 m. Verify against current official charts before entry.
What restricts entry to Guanica?
Entry is affected by overhead clearance limits. Check the live forecast on this page and official notices before approach.