Month-specific sea-surface temperature · New Zealand
Poor Knights Islands Sea Temperature in November
17.9°C
64.2°F
In November, sea-surface temperature near Poor Knights Islands has a historical monthly average of 17.9°C. This is not the reading for any particular holiday date.
Across 2023–2025, the lowest and highest yearly November monthly means were 17.5–18.6°C. These are not daily extremes.
Previous month
October · 16.1°C
Change into November: +1.8°C
Next month
December · 19.6°C
Change into next month: +1.7°C
Can you swim or snorkel in Poor Knights Islands in November?
At 17.9°C our temperature-only guide describes the water as cold water. Comfort depends on your cold tolerance, immersion time and wind. A historical average cannot determine whether conditions are safe on any given day.
Do you need a wetsuit?
Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Which beach should you choose?
Look for a beach sheltered from the actual forecast waves and wind on your visit. Exposure, currents and entry conditions vary even where water temperatures are similar. Follow local warnings.
Check the current waves, wind and snorkeling forecast →
A live forecast does not predict a future November. Check again close to your trip.
Waves and wind: recorded-model conditions for November
These figures come from a separately modelled, date-specific wind/wave backfill, not the NOAA SST series. A single observed season is not a climatological likelihood or a guarantee of safe conditions.
Compare nearby coasts with their own evidence
| Coast | Morning | Afternoon | Period |
|---|---|---|---|
| Goat Island | 31% | 29% | Nov 2025 |
A “calm hour” meets fixed modelled wave/wind thresholds; neither visibility nor local currents, entry conditions or actual beach safety is measured here. Periods may differ by coast.
Nearby places in November
Comparable historical averages from independent marine grid cells. Warmer water does not imply safe snorkeling.
- Bay of Islands 17.7°C
- Goat Island 18.8°C
Data source and limitations
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature; 2023–2025. Marine model grid near -35.47, 174.74. Based on 3 yearly monthly means and 2160 recorded samples. Source methodology.
Modelled sea-surface temperatures do not establish underwater visibility, wildlife, calm currents or safe entry.