New London (USNLO) — marine weather & port guide
New London is a port in United States at 41°21.0′N 72°6.0′W. Today (Aug 3): SSW wind 19–20 kn, waves 1.3–1.5 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 | 41°21.0′N 72°6.0′W |
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| UN/LOCODE | USNLO |
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| Harbor size | Small |
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| Harbor type | River natural harbor |
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| Shelter | Excellent |
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| Channel depth | 9 m |
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| Anchorage depth | 9 m |
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| Tide range | 1 m |
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| Pilotage | Compulsory |
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| Time zone | America/New_York |
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10-day marine forecast — New London
| Date | Wind | Gusts | Waves |
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| SSW 19–20 kn | 28 kn | 1.3–1.5 m |
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| WNW 3–13 kn | 23 kn | 0.7–1.2 m |
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| SW 2–9 kn | 12 kn | 0.5–0.6 m |
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| SSW 9–11 kn | 13 kn | 0.4–0.5 m |
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| WSW 10–14 kn | 21 kn | 0.5–0.7 m |
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| SW 9–10 kn | 13 kn | 0.4–0.5 m |
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| WSW 9–11 kn | 14 kn | 0.5–0.6 m |
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| WNW 6–6 kn | 13 kn | 0.3–0.3 m |
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| WSW 14–14 kn | 18 kn | 0.6–0.6 m |
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| NNW 5–5 kn | 11 kn | 0.3–0.3 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 New London right now?
As of the ECMWF IFS run 2026-08-03 12z: SSW wind 19–20 kn, waves 1.3–1.5 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 New London?
New London is classed as a small harbor (river natural harbor), with excellent shelter in the NGA World Port Index.
How deep is the approach to New London?
Per the NGA World Port Index, the entrance channel carries about 9 m and anchorage depths run about 9 m. Verify against current official charts before entry.
What restricts entry to New London?
Entry is affected by ice, overhead clearance limits. Check the live forecast on this page and official notices before approach.