Honolulu marine weather forecast
Honolulu (USHNL) is a port in United States at 21°18.0′N 157°51.0′W. Today (Sep 15): ENE wind 2–13 kn, waves 0.9–1.0 m, from the ECMWF IFS run 2026-09-15 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 | 21°18.0′N 157°51.0′W |
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| UN/LOCODE | USHNL |
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| Harbor size | Medium |
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| Harbor type | Coastal breakwater harbor |
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| Shelter | Excellent |
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| Channel depth | 11 m |
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| Anchorage depth | 23 m |
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| Tide range | 1 m |
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| Pilotage | Compulsory |
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| Time zone | Pacific/Honolulu |
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Facilities & services (NGA World Port Index)| Tugs | Assistance and salvage available |
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| Supplies | Diesel, water, provisions |
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| Repairs | Major (hull, machinery, electrical) |
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| Medical facilities | Available |
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10-day marine forecast — Honolulu
| Date | Wind | Gusts | Waves |
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| ENE 2–13 kn | 17 kn | 0.9–1.0 m |
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| ENE 3–10 kn | 13 kn | 1.0–1.1 m |
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| NE 16–22 kn | 28 kn | 1.3–1.8 m |
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| NE 7–21 kn | 28 kn | 1.5–1.8 m |
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| ENE 10–14 kn | 18 kn | 1.5–1.6 m |
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| E 13–13 kn | 17 kn | 1.6–1.7 m |
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| ENE 11–12 kn | 16 kn | 1.5–1.5 m |
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| NE 13–13 kn | 23 kn | 1.7–1.7 m |
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| ENE 14–14 kn | 21 kn | 1.8–1.8 m |
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| ENE 13–13 kn | 23 kn | 1.7–1.7 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 22 kn on Sep 17. The highest modeled significant wave height is 1.8 m on Sep 17. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Honolulu right now?
As of the ECMWF IFS run 2026-09-15 12z: ENE wind 2–13 kn, waves 0.9–1.0 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 Honolulu?
Honolulu is classed as a medium harbor (coastal breakwater harbor), with excellent shelter in the NGA World Port Index.
How deep is the approach to Honolulu?
Per the NGA World Port Index, the entrance channel carries about 11 m and anchorage depths run about 23 m. Verify against current official charts before entry.
What restricts entry to Honolulu?
Entry is affected by overhead clearance limits. Check the live forecast on this page and official notices before approach.