Lahaina (USLHN) — marine weather & port guide
Lahaina is a port in United States at 20°52.0′N 156°40.0′W. Today (Aug 3): NE wind 10–16 kn, waves 1.3–1.4 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 | 20°52.0′N 156°40.0′W |
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| UN/LOCODE | USLHN |
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| Harbor size | Very small |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Good |
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| Channel depth | 2 m |
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| Anchorage depth | 17 m |
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| Tide range | 0 m |
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| Time zone | Pacific/Honolulu |
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10-day marine forecast — Lahaina
| Date | Wind | Gusts | Waves |
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| NE 10–16 kn | 20 kn | 1.3–1.4 m |
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| NE 7–16 kn | 22 kn | 1.1–1.3 m |
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| NE 7–14 kn | 17 kn | 1.1–1.2 m |
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| NE 8–15 kn | 19 kn | 1.1–1.2 m |
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| ENE 10–16 kn | 21 kn | 1.1–1.3 m |
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| NE 11–15 kn | 19 kn | 1.3–1.4 m |
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| ENE 9–13 kn | 16 kn | 1.4–1.5 m |
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| ENE 10–10 kn | 16 kn | 1.5–1.5 m |
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| ENE 12–12 kn | 19 kn | 1.5–1.5 m |
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| ENE 11–11 kn | 18 kn | 1.6–1.6 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 Lahaina right now?
As of the ECMWF IFS run 2026-08-03 12z: NE wind 10–16 kn, waves 1.3–1.4 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 Lahaina?
Lahaina is classed as a very small harbor (coastal breakwater harbor), with good shelter in the NGA World Port Index.
How deep is the approach to Lahaina?
Per the NGA World Port Index, the entrance channel carries about 2 m and anchorage depths run about 17 m. Verify against current official charts before entry.
What restricts entry to Lahaina?
Entry is affected by heavy swell. Check the live forecast on this page and official notices before approach.