Siam Bangkok Port (THSBP) — marine weather & port guide
Siam Bangkok Port is a port in Thailand at 13°8.0′N 100°53.0′E. Today (Aug 3): ESE wind 0–4 kn, waves 0.4–0.5 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 | 13°8.0′N 100°53.0′E |
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| UN/LOCODE | THSBP |
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| Harbor size | Very small |
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| Harbor type | Open roadstead |
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| Shelter | Fair |
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| Channel depth | 14 m |
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| Anchorage depth | 5 m |
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| Tide range | 3 m |
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| Pilotage | Compulsory |
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| Time zone | Asia/Bangkok |
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10-day marine forecast — Siam Bangkok Port
| Date | Wind | Gusts | Waves |
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| ESE 0–4 kn | 9 kn | 0.4–0.5 m |
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| ENE 2–4 kn | 16 kn | 0.5–0.7 m |
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| E 2–4 kn | 13 kn | 0.9–1.3 m |
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| ENE 1–3 kn | 18 kn | 1.5–1.5 m |
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| E 3–4 kn | 15 kn | 1.5–1.7 m |
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| ESE 1–4 kn | 5 kn | 1.6–1.8 m |
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| NNE 2–3 kn | 4 kn | 1.0–1.2 m |
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| NNE 4–4 kn | 18 kn | 1.6–1.6 m |
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| N 3–3 kn | 20 kn | 1.7–1.7 m |
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| NE 1–1 kn | 24 kn | 0.9–0.9 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 Siam Bangkok Port right now?
As of the ECMWF IFS run 2026-08-03 12z: ESE wind 0–4 kn, waves 0.4–0.5 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 Siam Bangkok Port?
Siam Bangkok Port is classed as a very small harbor (open roadstead), with fair shelter in the NGA World Port Index.
How deep is the approach to Siam Bangkok Port?
Per the NGA World Port Index, the entrance channel carries about 14 m and anchorage depths run about 5 m. Verify against current official charts before entry.