Nonopapa — marine weather & port guide
Nonopapa is a port in United States at 21°52.0′N 160°14.0′W. Today (Aug 3): ENE wind 14–19 kn, waves 2.0–2.3 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°52.0′N 160°14.0′W |
|---|
| Harbor size | Very small |
|---|
| Harbor type | Open roadstead |
|---|
| Shelter | Poor |
|---|
| Channel depth | 13 m |
|---|
| Anchorage depth | 14 m |
|---|
| Tide range | 0 m |
|---|
| Time zone | Pacific/Honolulu |
|---|
10-day marine forecast — Nonopapa
| Date | Wind | Gusts | Waves |
|---|
| ENE 14–19 kn | 24 kn | 2.0–2.3 m |
|---|
| ENE 11–16 kn | 21 kn | 1.5–1.8 m |
|---|
| E 9–14 kn | 19 kn | 1.3–1.5 m |
|---|
| ENE 12–16 kn | 20 kn | 1.4–1.5 m |
|---|
| ENE 11–14 kn | 17 kn | 1.4–1.6 m |
|---|
| ENE 11–17 kn | 21 kn | 1.5–1.8 m |
|---|
| ENE 15–16 kn | 21 kn | 1.9–2.0 m |
|---|
| ENE 14–14 kn | 22 kn | 2.0–2.0 m |
|---|
| ENE 14–14 kn | 19 kn | 2.0–2.0 m |
|---|
| ENE 10–10 kn | 21 kn | 1.9–1.9 m |
|---|
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 Nonopapa right now?
As of the ECMWF IFS run 2026-08-03 12z: ENE wind 14–19 kn, waves 2.0–2.3 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 Nonopapa?
Nonopapa is classed as a very small harbor (open roadstead), with poor shelter in the NGA World Port Index.
How deep is the approach to Nonopapa?
Per the NGA World Port Index, the entrance channel carries about 13 m and anchorage depths run about 14 m. Verify against current official charts before entry.
What restricts entry to Nonopapa?
Entry is affected by heavy swell. Check the live forecast on this page and official notices before approach.