
Surf Forecasts:
Ruby Bay surf forecast from 5 Jul 2026:
- Most powerful swell: Tuesday 7 Jul, 3AM (local time) - 2.5ft (0.8m), 9s period, N swell with 96 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 9s and forecast to arrive on Tuesday (Jul 07) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Jul 07) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3AM (Tue 7th Jul) | 2.5ft (0.8m) 9s |
Table - best surf conditions forecast for Ruby Bay over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here. Let’s take a good hard look at what’s on offer at Ruby Bay over the next couple of weeks. Straight up, I gotta be honest with you—this one’s a tough stretch. Ruby Bay is a point break that rarely breaks and is sheltered from most swell, so we were already up against it. The next 16 days are pretty much a write-off for any kind of decent surf.
We’re looking at a long gap right from the start. The first shot at anything rideable doesn’t appear until Thursday, July 16th, so that’s over a week and a half of flat or near-flat conditions. Most days we’ve got zero wave energy, with only tiny pulses that won’t break properly, if at all. For the first week and a half, it’s all poor surf conditions, small windswells or no swell at all, and not a single recommendation to paddle out.
Now, for the one day that actually shows a pulse. On Thursday, July 16th, we get a spike in energy. The morning will see a 6ft swell from the NNE, but the period is short at just 5 seconds—so it’ll be fat and weak, with moderate combined swell energy (212). Not great, but at least it’s clean with a light offshore breeze. The real standout, and honestly the only one worth getting excited about, is the afternoon of that same day. The swell jumps to 7ft from the NNE, period bumps to 10 seconds, and the combined energy hits strong levels (784). The wind goes glassy—totally calm—so you’ll get clean, lined-up waves. That’s the best, and really only, window for a surf. But keep in mind, 7ft is getting into expert territory, so this is not one for beginners. And since Ruby Bay rarely breaks at all, for it to line up like this is pretty special.
There’s a bit of a bump again on Friday, July 17th, but it’s back to poor surf conditions with only 3ft and a weak energy reading (177). After that, it’s back to small, onshore junk or flatness through the 20th. Water temperature is around 54°F with the anomaly just -1°F, so about average for July—cold, but what you’d expect.
Bottom line: there’s one solid afternoon on July 16th if you’re an experienced surfer and can wait it out. The rest of the month is a washout for Ruby Bay.
Stay patient, and keep an eye on those forecasts.
Rusty.
Short Range ForecastHeavy rain (total 51mm), heaviest during Tue morning. Very mild (max 13°C on Mon afternoon, min 7°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 12°C on Thu afternoon, min 2°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sun 12 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | N 8 | ESE 4 | ESE 5 | N 9 | N 8 | N 8 | N 8 | N 9 | N 8 | NW 18 | NNW 16 | N 20 | NW 19 | NW 18 | NW 16 | NW 16 | N 20 | NW 18 | NW 16 | NW 16 | NW 16 |
Wave Graph | |||||||||||||||||||||
44 | 39 | 67 | 79 | 71 | 33 | 5 | 1 | 1 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | off | off | off | glassy | cross-off | off | off | off | cross-off | glassy | off | off | glassy | off | off | glassy |
High Tide | 1:37AM3.85m | 2:08PM3.55m | 2:20AM3.78m | 2:53PM3.49m | 3:09AM3.68m | 3:42PM3.45m | 4:04AM3.59m | 4:38PM3.42m | 5:08AM3.55m | 5:51PM3.42m | 6:17AM3.58m | 7:17PM3.54m | 7:27AM3.68m | ||||||||
Low Tide | 7:27AM1.15m | 7:50PM1.17m | 8:13AM1.20m | 8:36PM1.31m | 9:04AM1.26m | 9:36PM1.43m | 10:03AM1.33m | 10:53PM1.46m | 11:09AM1.37m | 00:08AM1.38m | 12:19PM1.34m | 1:13AM1.21m | 1:30PM1.24m | ||||||||
— | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | |
— | — | 5:10 | — | — | 5:12 | — | — | 5:12 | — | — | 5:13 | — | — | 5:14 | — | — | 5:14 | — | — | 5:15 | |
mm | 1 | — | — | 9 | 28 | 12 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 8 | 12 | 13 | 11 | 10 | 10 | 9 | 12 | 13 | 9 | 11 | 12 | 7 | 8 | 9 | 3 | 9 | 10 | 4 | 9 | 9 |
Feels °C | 6 | 8 | 9 | 8 | 8 | 7 | 5 | 10 | 12 | 6 | 6 | 8 | 3 | 5 | 6 | 0 | 7 | 7 | 1 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | N 8 | ENE 8 | NW 16 | N 9 | N 8 | N 8 | SE 4 | — | — | ESE 3 | NNW 16 | NW 15 | NW 19 | NW 18 | NW 16 | NW 16 | N 15 | NW 18 | E 3 | NW 16 | NW 16 |
44 | 11 | 65 | 79 | 71 | 33 | 4 | — | — | 2 | 24 | 9 | 14 | 12 | 10 | 10 | 4 | 12 | 2 | 10 | 10 | |
Swell 2 Height (m) Direction Period (s) | NNW 12 | NNW 14 | N 8 | NNW 16 | NW 16 | ENE 5 | N 8 | N 9 | N 8 | NW 18 | ENE 4 | — | — | — | — | — | — | — | NW 16 | — | — |
28 | 38 | 5 | 25 | 10 | 2 | 5 | 1 | 1 | 12 | 1 | — | — | — | — | — | — | — | 10 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | N 8 | — | — | — | NW 15 | NE 5 | — | — | E 7 | — | N 20 | NW 14 | — | — | — | N 20 | — | E 6 | — | — |
— | 5 | — | — | — | 9 | 1 | — | — | 1 | — | 8 | 8 | — | — | — | 7 | — | 1 | — | — | |
Wind waves Height (m) Direction Period (s) | — | ESE 4 | ESE 5 | SE 4 | ESE 4 | SE 4 | S 3 | — | — | — | S 3 | S 3 | S 3 | SSW 2 | — | — | — | — | — | SW 2 | — |
— | 39 | 67 | 20 | 35 | 17 | 5 | — | — | — | 4 | 1 | 1 | 1 | — | — | — | — | — | 1 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 14 | 14 | 170 | 14 | 14 | 14 | 83 | 83 | 83 | 83 | 85 | 83 | 83 | 83 | 88 | 84 | 83 | 83 | 83 | 83 |
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











