Surf Forecasts:
Ruby Bay surf forecast from 10 Nov 2026:
- Best quality surf: Friday 20 Nov, 1AM (local time) - 4.5ft (1.4m), 8s period, N swell with cross-offshore winds.
- Most powerful swell: Friday 20 Nov, 1AM (local time) - 4.5ft (1.4m), 8s period, N swell with 221 kJ wave energy.
- Next surfable swell (1★+): Friday 20 Nov, 1AM (local time) - 4.5ft (1.4m), 8s period with N swell.
Best Forecast Surf Conditions for Ruby Bay this week:
The surf forecast for Ruby Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Nov 20) at 1AM. The primary swell is predicted to be 1.4m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ruby Bay in the next 16 days are 1.4m 8s and forecast to arrive on Friday (Nov 20) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 7s period and expected on Monday (Nov 16) at 7PM.
| Wave Type | Time (NZDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 20th Nov) | 4.5ft (1.4m) 8s |
| Best Surf | 1AM (Fri 20th Nov) | 4.5ft (1.4m) 8s |
| Most Powerful | 1AM (Fri 20th Nov) | 4.5ft (1.4m) 8s |
Table - best surf conditions forecast for Ruby Bay over the next 16 days.
Short Range ForecastHeavy rain (total 34mm), heaviest during Tue afternoon. Warm (max 21°C on Thu afternoon, min 10°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 21°C on Sun afternoon, min 9°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | Monday 16 | |||||||||||||||
AM | 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 13 | N 6 | N 6 | N 7 | N 6 | N 16 | N 16 | N 16 | N 15 | N 15 | N 15 | N 13 | N 13 | N 13 | N 12 | N 4 | N 12 | NW 6 | NNW 6 | NNW 6 | NNE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3 | 7 | 51 | 168 | 163 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 98 | 55 | 0 | 101 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-on | cross-on | cross-on | glassy | glassy | cross-off | off | glassy | on | off | glassy | on | off | glassy | off | glassy | off | glassy | off |
High Tide | 11:27AM4.06m | 11:34PM3.87m | 12:01PM4.08m | 00:11AM3.79m | 12:34PM4.04m | 00:48AM3.68m | 1:06PM3.94m | 1:26AM3.56m | 1:40PM3.78m | 2:08AM3.45m | 2:17PM3.59m | 2:55AM3.34m | 3:02PM3.41m | 3:48AM3.25m | |||||||
Low Tide | 5:08PM0.93m | 5:29AM0.93m | 5:41PM0.99m | 6:05AM1.01m | 6:13PM1.06m | 6:42AM1.12m | 6:47PM1.16m | 7:22AM1.24m | 7:23PM1.27m | 8:04AM1.34m | 8:05PM1.41m | 8:49AM1.43m | 8:55PM1.55m | ||||||||
 |  |  |  | |  |  |  |  | | | | | | | | | | | | | |
 | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | 6:01 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — |
 | — | 8:17 | — | — | 8:19 | — | — | 8:20 | — | — | 8:22 | — | — | 8:22 | — | — | 8:23 | — | — | 8:24 | — |
mm | 3 | 18 | 10 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 14 | 14 | 15 | 18 | 20 | 14 | 19 | 21 | 14 | 18 | 17 | 13 | 18 | 17 | 12 | 19 | 21 | 15 | 19 | 20 | 11 |
Feels °C | 14 | 14 | 15 | 16 | 17 | 12 | 18 | 19 | 12 | 15 | 14 | 12 | 16 | 15 | 11 | 18 | 19 | 14 | 15 | 18 | 9 |
Swell 1 Height (m) Direction Period (s) | ENE 4 | NE 5 | N 12 | — | — | N 6 | N 7 | NNW 6 | NNW 5 | NNW 5 | N 6 | NNW 5 | N 4 | N 13 | — | N 4 | NNW 6 | NNW 5 | N 11 | — | N 16 |
| kJ | 2 | 7 | 11 | — | — | 78 | 44 | 69 | 8 | 2 | 1 | 4 | 1 | 3 | — | 3 | 85 | 27 | 2 | — | 5 |
Swell 2 Height (m) Direction Period (s) | N 13 | N 6 | — | — | — | N 16 | NNW 8 | N 16 | N 7 | N 7 | N 14 | N 13 | N 13 | N 6 | N 12 | NW 5 | N 12 | N 12 | — | — | N 11 |
| kJ | 3 | 7 | — | — | — | 5 | 7 | 5 | 4 | 1 | 4 | 3 | 3 | 1 | 3 | 1 | 3 | 3 | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | N 13 | — | — | — | — | N 16 | NW 16 | N 15 | N 15 | N 15 | — | — | — | N 12 | N 6 | — | — | — | — | — |
| kJ | — | 3 | — | — | — | — | 5 | 10 | 4 | 4 | 4 | — | — | — | 3 | 1 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | N 6 | N 7 | N 6 | NNW 6 | — | NW 6 | SW 2 | S 3 | NNE 3 | — | — | NNE 2 | — | — | NW 7 | NW 6 | NNW 6 | NNW 6 | NNE 6 |
| kJ | — | — | 51 | 168 | 163 | 209 | — | 245 | 1 | 1 | 1 | — | — | 1 | — | — | 381 | 98 | 55 | 155 | 101 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 88 | 83 | 83 | 129 | 129 | 14 | 14 | 116 | 125 | 83 | 143 | 83 | 85 | 129 | 83 | 83 | 14 | 14 | 141 | 133 | 14 |
Best forecast wave conditions in Nelson - Tasman Bay | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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