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Ruby Bay Surf Forecast
/ Nelson – Tasman Bay (18 surf breaks) /
Surf Forecasts:
Ruby Bay surfForecast / Nelson – Tasman Bay / New Zealand
48hr Weather and Surf, issued 11 am Monday 18 May 2026 NZSTForecast update in hr min s Forecast update imminent
Ruby Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ruby Bay sea temperature is
14.9° C
(Which is normal for this time of year)How big are the waves at Ruby Bay today?
The current surf forecast for Ruby Bay at 6PM is: 0.1m 18s primary swell from a North direction and 0.1m 4s secondary swell from a Northeast direction (forecast issued at 11:00am May 18). The wind direction is predicted to be glassy.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 0.5ft (0.1m) | 14s |
| Afternoon (18 May) | 0.5ft (0.1m) | 14s |
| Evening (18 May) | 0.5ft (0.1m) | 18s |
Table - waves today at Ruby Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 12°C on Mon afternoon, min 5°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
N 14 | N 20 | N 14 | N 18 | N 18 | NW 17 | NW 16 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | N 15 | NW 14 | N 14 | N 14 | N 14 | N 14 | NW 4 | NNW 5 | NW 5 | NNW 4 | N 4 | N 5 | |
4 | 7 | 4 | 6 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 4 | 4 | 4 | 4 | 14 | 37 | 31 | 0 | 6 | 11 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | glassy | glassy | off | off | off | off | glassy | on | glassy | off | off | off | off | glassy | glassy | glassy | glassy | glassy | off | off | off | |
High Tide | 10:48AM4.22m | 11:24PM4.36m | 11:38AM4.14m | 00:10AM4.28m | 12:30PM3.98m | 00:59AM4.11m | ||||||||||||||||||
Low Tide | 4:43PM0.67m | 5:07AM0.58m | 5:36PM0.74m | 5:58AM0.73m | 6:29PM0.86m | |||||||||||||||||||
 | | |  | | | | | | | | | | | | | | | | | | | | | |
 | 7:31 | — | — | — | — | — | — | 7:31 | — | — | — | — | — | — | — | 7:33 | — | — | — | — | — | — | — | 7:33 |
 | — | — | 5:15 | — | — | — | — | — | — | — | 5:15 | — | — | — | — | — | — | — | 5:14 | — | — | — | — | 5:14 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 6 | 10 | 12 | 10 | 8 | 8 | 7 | 7 | 7 | 11 | 11 | 9 | 8 | 7 | 6 | 5 | 6 | 10 | 11 | 8 | 7 | 6 | 6 | 7 |
4 | 9 | 10 | 9 | 6 | 6 | 4 | 4 | 4 | 10 | 9 | 8 | 6 | 5 | 4 | 2 | 3 | 8 | 9 | 6 | 5 | 3 | 3 | 5 | |
Swell 1 Height (m) Direction Period (s) | NE 4 | NE 4 | NE 4 | NE 4 | N 18 | NW 17 | NW 16 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NNW 3 | NNW 3 | NNW 3 | NNW 3 | NNW 4 | NNW 4 | NNW 4 | NNW 4 | NNW 4 | NNW 4 | N 4 | N 5 |
 kJ | 1 | 1 | 1 | 1 | 6 | 12 | 10 | 10 | 10 | 9 | 8 | 9 | 1 | 1 | 1 | 1 | 1 | 2 | 6 | 11 | 11 | 6 | 6 | 11 |
Swell 2 Height (m) Direction Period (s) | N 14 | N 14 | N 14 | N 18 | — | — | — | — | — | — | — | — | N 15 | NW 14 | N 14 | N 14 | N 14 | N 14 | N 14 | N 14 | — | — | NW 13 | NW 13 |
| kJ | 4 | 4 | 4 | 6 | — | — | — | — | — | — | — | — | 4 | 8 | 4 | 4 | 4 | 4 | 4 | 4 | — | — | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | — | N 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | NW 3 | — | — | — | — | — | NW 4 | NNW 5 | NW 5 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 14 | 37 | 31 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 125 | 129 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 14 | 14 | 83 | 83 | 83 |
Best forecast wave conditions in Nelson - Tasman Bay | ||||||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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