Olympia marine weather forecast
Olympia (USOLM) is a port in United States at 47°3.0′N 122°54.0′W. Today (Sep 17): NNW wind 3–4 kn, from the NOAA GFS run 2026-09-17 18z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 47°3.0′N 122°54.0′W |
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| UN/LOCODE | USOLM |
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| Harbor size | Small |
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| Harbor type | Coastal natural harbor |
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| Shelter | Excellent |
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| Channel depth | 8 m |
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| Anchorage depth | 8 m |
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| Tide range | 3 m |
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| Pilotage | Compulsory |
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| Time zone | America/Los_Angeles |
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Facilities & services (NGA World Port Index)| Tugs | Assistance available |
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| Supplies | Fuel oil, diesel, water, provisions |
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| Repairs | Limited |
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| Medical facilities | Available |
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10-day marine forecast — Olympia
| Date | Wind | Gusts | Waves |
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| NNW 3–4 kn | 3 kn | — |
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| SSW 3–4 kn | 3 kn | — |
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| ENE 2–3 kn | 3 kn | — |
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| WSW 3–3 kn | 3 kn | — |
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| WSW 4–4 kn | 5 kn | — |
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| WNW 4–4 kn | 5 kn | — |
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| NNW 3–3 kn | 3 kn | — |
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| N 3–3 kn | 4 kn | — |
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| SSW 4–4 kn | 15 kn | — |
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| N 3–3 kn | 3 kn | — |
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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 4 kn on Sep 18. Compare the dated model run with official forecasts and warnings before departure.
Frequently asked
How is the weather at Olympia right now?
As of the NOAA GFS run 2026-09-17 18z: NNW wind 3–4 kn. The 10-day outlook is in the forecast table on this page and updates with each model cycle.
How big is the harbor at Olympia?
Olympia is classed as a small harbor (coastal natural harbor), with excellent shelter in the NGA World Port Index.
How deep is the approach to Olympia?
Per the NGA World Port Index, the entrance channel carries about 8 m and anchorage depths run about 8 m. Verify against current official charts before entry.