Surf Forecasts:
Ruby Bay surf forecast from 12 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 12AM (local time) - 5ft (1.6m), 7s period, N swell with glassy winds.
- Most powerful swell: Tuesday 14 Jul, 12AM (local time) - 5ft (1.6m), 7s period, N swell with 276 kJ wave energy.
- Next surfable swell (1★+): Tuesday 14 Jul, 12AM (local time) - 5ft (1.6m), 7s 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 Tuesday (Jul 14) at 12AM. The primary swell is predicted to be 1.6m and 7s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Ruby Bay in the next 16 days are 1.6m 7s and forecast to arrive on Tuesday (Jul 14) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Tuesday (Jul 14) at 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 14th Jul) | 5ft (1.6m) 7s |
| Best Surf | 12AM (Tue 14th Jul) | 5ft (1.6m) 7s |
| Most Powerful | 12AM (Tue 14th Jul) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Ruby Bay over the next 16 days.
Alright, Rusty here again. Let’s break down what’s happening at Ruby Bay.
For the first ten days or so, from July 13th through the morning of July 24th, it’s a total flat spell. This is a sheltered point that rarely breaks, and the forecast is living up to that. Swell sizes are tiny, mostly under 0.3 ft, and the combined energy is in the single digits – a real snoozer. The water temp is around 53°, which is about 2° colder than usual, so it’s a bit nippy.
The best you can hope for comes on the morning of July 26th. There’s a 4 ft north swell with a 6-second period, and the combined energy is 91. The wind is light offshore from the southwest at 6 mph, so the surface will be clean. But it’s still a weak, short-period swell, and the spot is inconsistent. The afternoon of July 28th shows a jump in energy to 246 and a 3 ft north swell, but the wind turns onshore from the northeast, spoiling the shape.
For a break that’s rarely working, it’s just not coming together. The small, weak swell combined with the sheltered setup makes this look more like a kiteboarding spot than a paddle surfing one for the foreseeable future.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Very mild (max 14°C on Wed morning, min 5°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Thu afternoon, min 5°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
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) | NNW 4 | N 5 | N 7 | N 8 | N 7 | N 7 | N 7 | NW 16 | N 6 | N 6 | N 6 | NW 15 | N 5 | N 6 | N 6 | N 6 | N 6 | N 9 | N 8 | N 9 | N 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 15 | 276 | 89 | 88 | 77 | 32 | 0 | 0 | 25 | 10 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | on | glassy | glassy | glassy | glassy | glassy | glassy | glassy | off | glassy | off | off | glassy | off | off | glassy | off | off | glassy | cross-off |
High Tide | 9:28PM4.06m | 9:33AM3.98m | 10:17PM4.29m | 10:29AM4.09m | 11:02PM4.42m | 11:21AM4.15m | 11:45PM4.43m | 12:09PM4.15m | 00:27AM4.34m | 12:54PM4.08m | 1:09AM4.17m | 1:36PM3.95m | 1:51AM3.97m | ||||||||
Low Tide | 2:37PM1.08m | 3:10AM0.84m | 3:39PM0.90m | 4:03AM0.69m | 4:34PM0.75m | 4:53AM0.59m | 5:21PM0.68m | 5:39AM0.58m | 6:03PM0.69m | 6:23AM0.66m | 6:42PM0.79m | 7:05AM0.82m | 7:19PM0.95m | ||||||||
 |  |  | | |  | | | | | |  | | | | | | | | |  | |
 | 7:50 | — | — | 7:50 | — | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:47 | — | — | 7:47 | — | — |
 | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — | — | 5:21 | — |
mm | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 10 | 11 | 11 | 12 | 13 | 11 | 14 | 14 | 11 | 15 | 16 | 9 | 13 | 15 | 7 | 11 | 13 | 7 | 14 | 16 | 8 |
Feels °C | 8 | 9 | 8 | 11 | 12 | 10 | 14 | 13 | 10 | 13 | 14 | 6 | 11 | 13 | 5 | 9 | 11 | 5 | 11 | 15 | 6 |
Swell 1 Height (m) Direction Period (s) | N 4 | N 5 | N 7 | N 8 | N 7 | N 7 | N 7 | N 6 | N 6 | N 6 | N 6 | NNW 5 | NW 15 | NW 15 | NW 15 | NW 16 | NW 18 | NW 17 | NW 16 | NW 16 | N 11 |
| kJ | 2 | 15 | 276 | 89 | 88 | 77 | 32 | 21 | 32 | 25 | 10 | 2 | 8 | 9 | 9 | 10 | 12 | 12 | 10 | 10 | 10 |
Swell 2 Height (m) Direction Period (s) | N 15 | N 14 | — | — | NW 12 | NNW 12 | NW 16 | NW 16 | NNW 16 | NNW 16 | NNW 15 | NW 15 | N 5 | N 6 | N 6 | N 6 | N 6 | N 9 | N 8 | N 9 | NE 6 |
| kJ | 4 | 4 | — | — | 5 | 15 | 69 | 63 | 24 | 24 | 23 | 8 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | NW 18 | — | — | — | — | — | — | — | — | — | — | NW 6 | — | NW 4 | NW 4 | NW 15 |
| kJ | — | — | — | — | — | 13 | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 1 | 9 |
Wind waves Height (m) Direction Period (s) | NNW 4 | — | NNW 7 | — | NNW 8 | — | — | NNW 7 | — | SW 2 | SW 3 | SW 2 | SSW 2 | — | — | — | — | — | SW 2 | — | ENE 3 |
| kJ | 5 | — | 547 | — | 191 | — | — | 51 | — | 1 | 2 | 1 | 1 | — | — | — | — | — | 1 | — | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 83 | 88 | 0 | 14 | 14 | 14 | 32 | 14 | 14 | 14 | 116 | 83 | 83 | 83 | 83 | 83 | 83 | 38 | 83 | 85 | 83 |
Best forecast wave conditions in Nelson - Tasman Bay | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
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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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