Surf Forecasts:
Ruby Bay surf forecast from 18 Sep 2026:
- Most powerful swell: Tuesday 22 Sep, 6AM (local time) - 2.5ft (0.8m), 6s period, NW swell with 43 kJ wave energy.
Best Forecast Surf Conditions for Ruby Bay this week:
The most powerful waves expected at Ruby Bay in the next 16 days are 0.8m 6s and forecast to arrive on Tuesday (Sep 22) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Sunday (Sep 20) at 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Tue 22nd Sep) | 2.5ft (0.8m) 6s |
Table - best surf conditions forecast for Ruby Bay over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Sat night. Very mild (max 16°C on Fri afternoon, min 4°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Wed afternoon. Very mild (max 17°C on Mon afternoon, min 3°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | N 7 | N 7 | N 7 | NW 6 | NW 6 | N 5 | NNW 15 | NE 4 | N 8 | NNW 6 | NNW 5 | NNW 5 | N 5 | NW 15 | NW 15 | E 3 | N 6 | N 6 | NNW 16 | NNE 3 |
Wave Graph  | ||||||||||||||||||||
 kJ | 17 | 1 | 1 | 0 | 0 | 2 | 0 | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 1 | 1 | 0 | 1 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | off | cross-off | cross-off | off | off | off | off | cross-off | off | cross-off | off | off | off | cross-on | off | glassy | on | off |
High Tide | 2:45AM3.16m | 2:53PM3.23m | 3:50AM2.98m | 3:58PM3.01m | 5:13AM2.93m | 5:51PM2.93m | 6:32AM3.02m | 7:22PM3.10m | 7:33AM3.19m | 8:12PM3.37m | 8:23AM3.40m | 8:50PM3.64m | ||||||||
Low Tide | 7:57PM1.58m | 8:35AM1.59m | 9:04PM1.80m | 9:36AM1.77m | 10:42PM1.89m | 10:58AM1.83m | 00:12AM1.83m | 12:30PM1.71m | 1:16AM1.66m | 1:37PM1.46m | 2:02AM1.44m | 2:23PM1.19m | 2:40AM1.19m | |||||||
 |  |  | |  | | | | | |  |  | | |  | | | | | | |
 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:13 | — | — |
 | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:24 | — |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 1 | 7 | — | — | — | — |
Temp °C | 16 | 9 | 14 | 14 | 13 | 13 | 14 | 7 | 16 | 17 | 9 | 16 | 15 | 7 | 12 | 8 | 5 | 10 | 10 | 7 |
Feels °C | 14 | 7 | 12 | 12 | 9 | 7 | 9 | 4 | 13 | 14 | 6 | 11 | 9 | 3 | 8 | 5 | 3 | 5 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | N 7 | NNW 16 | NNW 15 | NNW 5 | NNW 5 | NW 14 | NNW 15 | NNW 16 | NW 16 | NNW 6 | NNW 5 | NNW 5 | N 5 | ENE 4 | NW 15 | NNW 17 | NNW 16 | NNW 16 | NNW 16 | NNE 3 |
| kJ | 17 | 24 | 23 | 16 | 33 | 54 | 87 | 103 | 41 | 21 | 8 | 33 | 13 | 1 | 9 | 28 | 27 | 25 | 24 | 1 |
Swell 2 Height (m) Direction Period (s) | NNW 16 | N 7 | N 7 | NNW 16 | NW 16 | NNW 7 | NW 8 | NE 4 | N 8 | NNW 16 | NW 15 | NW 14 | NW 14 | NNW 4 | NW 6 | NW 5 | — | N 6 | W 6 | NW 15 |
| kJ | 24 | 1 | 1 | 24 | 10 | 10 | 45 | 2 | 5 | 24 | 9 | 8 | 8 | 2 | 1 | 1 | — | 1 | 1 | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | N 5 | — | — | — | — | — | — | — | NW 15 | — | — | N 6 | — | — | — |
| kJ | — | — | — | — | — | 2 | — | — | — | — | — | — | — | 9 | — | — | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NW 6 | NW 6 | WSW 4 | SW 3 | — | — | — | SW 3 | — | SW 3 | — | SW 2 | E 3 | — | SSW 2 | — | — |
| kJ | — | — | — | 92 | 200 | 21 | 2 | — | — | — | 1 | — | 2 | — | 1 | 6 | — | 1 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 83 | 83 | 83 | 115 | 83 | 83 | 170 | 14 | 83 | 83 | 83 | 55 | 32 | 83 | 38 | 146 | 83 | 83 | 137 | 83 |
Best forecast wave conditions in Nelson - Tasman Bay | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ruby Bay surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Ruby Bay Surf forecast
The above surf forecast table for Ruby Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ruby Bay can be found by selecting the local surf guide option on the grey menu. Our Ruby Bay surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ruby Bay) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Ruby Bay may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Nelson - Tasman Bay? If you are looking for accommodation near Ruby Bay, camping, hotels and holiday cottages in Nelson - Tasman Bay, consider staying in Nelson which is 17 km (11 miles) away. Alternatively, find information about places to stay and car hire in Blenheim which is 80 km (50 miles) away
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