Si Racha (THSRI) — marine weather & port guide
Si Racha is a port in Thailand at 13°7.0′N 100°53.0′E. Today (Aug 3): SSW wind 9–11 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°7.0′N 100°53.0′E |
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| UN/LOCODE | THSRI |
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| Harbor size | Medium |
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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 | 22 m |
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| Tide range | 2 m |
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| Pilotage | Compulsory |
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| Time zone | Asia/Bangkok |
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10-day marine forecast — Si Racha
| Date | Wind | Gusts | Waves |
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| SSW 9–11 kn | 16 kn | 0.4–0.5 m |
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| SW 10–14 kn | 22 kn | 0.5–0.7 m |
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| SW 14–17 kn | 26 kn | 0.9–1.3 m |
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| WSW 19–23 kn | 29 kn | 1.5–1.5 m |
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| SW 17–22 kn | 33 kn | 1.5–1.7 m |
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| SW 18–24 kn | 30 kn | 1.6–1.8 m |
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| WSW 16–16 kn | 20 kn | 1.0–1.2 m |
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| WSW 21–21 kn | 32 kn | 1.6–1.6 m |
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| WSW 22–22 kn | 33 kn | 1.7–1.7 m |
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| WSW 15–15 kn | 19 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 Si Racha right now?
As of the ECMWF IFS run 2026-08-03 12z: SSW wind 9–11 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 Si Racha?
Si Racha is classed as a medium harbor (open roadstead), with fair shelter in the NGA World Port Index.
How deep is the approach to Si Racha?
Per the NGA World Port Index, the entrance channel carries about 14 m and anchorage depths run about 22 m. Verify against current official charts before entry.
What restricts entry to Si Racha?
Entry is affected by overhead clearance limits. Check the live forecast on this page and official notices before approach.