Muntok (IDMUO) — marine weather & port guide
Muntok is a port in Indonesia at 2°4.0′S 105°10.0′E. Today (Aug 3): SSE wind 7–11 kn, waves 0.3–0.4 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 | 2°4.0′S 105°10.0′E |
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| UN/LOCODE | IDMUO |
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| Harbor size | Very small |
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| Harbor type | Coastal natural harbor |
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| Shelter | Fair |
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| Anchorage depth | 22 m |
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| Tide range | 9 m |
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| Time zone | Asia/Jakarta |
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10-day marine forecast — Muntok
| Date | Wind | Gusts | Waves |
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| SSE 7–11 kn | 13 kn | 0.3–0.4 m |
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| SE 5–10 kn | 14 kn | 0.2–0.4 m |
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| SE 9–12 kn | 15 kn | 0.3–0.4 m |
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| SE 7–10 kn | 15 kn | 0.3–0.4 m |
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| SE 8–11 kn | 15 kn | 0.4–0.4 m |
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| ESE 10–12 kn | 15 kn | 0.4–0.5 m |
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| SE 11–12 kn | 15 kn | 0.4–0.5 m |
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| SE 12–12 kn | 17 kn | 0.4–0.4 m |
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| ESE 11–11 kn | 20 kn | 0.5–0.5 m |
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| SE 11–11 kn | 18 kn | 0.4–0.4 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 Muntok right now?
As of the ECMWF IFS run 2026-08-03 12z: SSE wind 7–11 kn, waves 0.3–0.4 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 Muntok?
Muntok is classed as a very small harbor (coastal natural harbor), with fair shelter in the NGA World Port Index.
How deep is the approach to Muntok?
Per the NGA World Port Index, anchorage depths run about 22 m. Verify against current official charts before entry.