Nuku'alofa (TOTBU) — marine weather & port guide
Nuku'alofa is a port in Tonga at 21°8.0′S 175°12.0′W. Today (Aug 3): S wind 15–19 kn, waves 2.5–3.4 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 | 21°8.0′S 175°12.0′W |
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| UN/LOCODE | TOTBU |
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| Harbor size | Very small |
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| Harbor type | Coastal natural harbor |
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| Shelter | Good |
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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/Tongatapu |
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10-day marine forecast — Nuku'alofa
| Date | Wind | Gusts | Waves |
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| S 15–19 kn | 23 kn | 2.5–3.4 m |
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| SSE 14–16 kn | 22 kn | 2.9–3.8 m |
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| SSE 12–18 kn | 24 kn | 2.4–2.7 m |
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| SE 22–23 kn | 31 kn | 3.1–4.2 m |
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| SE 21–23 kn | 31 kn | 3.5–4.0 m |
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| ESE 20–22 kn | 28 kn | 3.5–3.8 m |
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| E 21–22 kn | 27 kn | 3.8–4.1 m |
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| E 21–21 kn | 29 kn | 3.5–3.5 m |
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| ENE 16–16 kn | 22 kn | 2.9–2.9 m |
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| ENE 15–15 kn | 22 kn | 2.5–2.5 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 Nuku'alofa right now?
As of the ECMWF IFS run 2026-08-03 12z: S wind 15–19 kn, waves 2.5–3.4 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 Nuku'alofa?
Nuku'alofa is classed as a very small harbor (coastal natural harbor), with good shelter in the NGA World Port Index.
How deep is the approach to Nuku'alofa?
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 Nuku'alofa?
Entry is affected by tidal windows, heavy swell. Check the live forecast on this page and official notices before approach.