Surf Forecasts:
Ruby Bay surf forecast from 6 Jul 2026:
- Most powerful swell: Tuesday 14 Jul, 12AM (local time) - 3.5ft (1.1m), 6s period, N swell with 88 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 1.1m 6s 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 0.8m 4s period and expected on Tuesday (Jul 07) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12AM (Tue 14th Jul) | 3.5ft (1.1m) 6s |
Table - best surf conditions forecast for Ruby Bay over the next 16 days.
Updates in hr min s Forecast update imminent
Alright folks, Rusty here with a look at the next couple of weeks at Ruby Bay. Let me tell ya, it’s a tough one. This little spot is a sheltered point that rarely breaks, and this forecast is a real test of patience.
We’ve got a long, flat spell to start. From now right through until Monday, July 14th, it’s mostly poor or no surf. There's a tiny bump of 0.3ft with a very long 15-second period on Sunday, July 13th, but it’s only registering a combined energy of 4, so it’s nothing to get excited about.
Finally, on Tuesday, July 15th, things look interesting. The morning will see some new swell arrive, with 7ft from the N. The period is a short 8 seconds, but the combined energy is a solid 624. The wind is a light 3 mph from the NNW, creating a cross breeze. The afternoon holds similar size at 7ft from the N, with energy at 641, but the wind swings to a cross-onshore from the N at 6 mph, which will mess it up. It’s still a marginal forecast, but on a break that rarely shows up, this is your only real shot. That 7ft swell will be too much for beginners, and the short period won't be the prettiest, but the energy is there.
After that, it goes back to tiny or flat conditions for days. Wednesday, July 16th is clean with a 2ft swell and offshore wind, but the energy is only 55. We then see a bit of a pulse again on Monday, July 22nd with a 6ft N swell (energy 303), clean with offshore winds in the morning. The afternoon of the 22nd gets bigger to 8ft from the N, with a combined energy of 751, but the wind is onshore and it’s labeled as marginal again. That afternoon swell will be big and powerful, but messy.
Honestly, this is a tough stretch for Ruby Bay. It’s a spot that doesn’t fire often, and when it does, the conditions aren't making it easy. If you're a local who knows the sandbar, Tuesday, July 15th morning might be your best (and only) window for a few.
Stay patient,
Rusty
Short Range ForecastHeavy rain (total 34mm), heaviest during Tue morning. Very mild (max 14°C on Wed afternoon, min 8°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 13°C on Thu afternoon, min 3°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Mon 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ESE 5 | ESE 5 | N 8 | N 8 | N 7 | N 9 | N 8 | NW 17 | NNW 16 | N 20 | NW 19 | NW 18 | NE 4 | NW 16 | N 15 | NW 18 | NW 16 | NW 16 | NW 16 | NW 15 | N 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 64 | 36 | 66 | 33 | 4 | 2 | 1 | 0 | 0 | 8 | 0 | 0 | 1 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | off | glassy | off | cross-off | cross-off | off | cross-off | glassy | off | cross-off | glassy | glassy | glassy | on | glassy | glassy |
High Tide | 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 | 8:31PM3.78m | 8:32AM3.83m | ||||||||
Low Tide | 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 | 2:13AM1.02m | ||||||||
 |  |  |  |  |  | |  | | |  |  | |  | | | | | | | | |
 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 |
 | 5:10 | — | — | 5:12 | — | — | 5:12 | — | — | 5:13 | — | — | 5:14 | — | — | 5:14 | — | — | 5:15 | — | 5:15 |
mm | — | 11 | 15 | 7 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 10 | 9 | 11 | 9 | 13 | 14 | 10 | 12 | 13 | 8 | 8 | 9 | 4 | 9 | 9 | 5 | 8 | 9 | 5 | 10 |
Feels °C | 9 | 7 | 6 | 9 | 6 | 11 | 12 | 7 | 8 | 9 | 5 | 6 | 6 | 1 | 7 | 6 | 2 | 6 | 6 | 3 | 9 |
Swell 1 Height (m) Direction Period (s) | NW 16 | N 8 | N 8 | N 8 | N 7 | — | N 8 | NW 17 | NNW 16 | NW 15 | — | NW 18 | NE 4 | NW 16 | N 15 | NW 18 | NW 16 | NW 16 | NW 16 | NW 15 | — |
| kJ | 65 | 36 | 66 | 33 | 4 | — | 1 | 12 | 24 | 9 | — | 12 | 1 | 10 | 4 | 12 | 10 | 10 | 10 | 9 | — |
Swell 2 Height (m) Direction Period (s) | ENE 8 | NNW 16 | ENE 5 | ENE 5 | ENE 4 | N 9 | — | — | — | — | NW 19 | — | NW 16 | — | — | — | — | — | — | — | N 15 |
| kJ | 7 | 25 | 5 | 3 | 2 | 2 | — | — | — | — | 14 | — | 10 | — | — | — | — | — | — | — | 4 |
Swell 3 Height (m) Direction Period (s) | N 8 | — | NW 16 | NW 15 | E 7 | — | — | — | — | N 20 | NW 14 | — | — | — | — | — | — | — | — | — | — |
| kJ | 5 | — | 10 | 9 | 1 | — | — | — | — | 8 | 8 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 5 | ESE 5 | SE 4 | SSE 4 | SSE 4 | SW 3 | — | SSW 2 | SW 3 | SSE 3 | SSE 3 | — | — | — | — | — | — | — | — | — | — |
| kJ | 64 | 29 | 22 | 21 | 5 | 1 | — | 1 | 2 | 3 | 2 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 201 | 14 | 14 | 83 | 83 | 83 | 83 | 84 | 85 | 84 | 83 | 83 | 85 | 83 | 83 | 85 | 83 | 83 | 83 | 83 | 83 |
Best forecast wave conditions in Nelson - Tasman Bay | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Nelson - Tasman Bay
Expand
<
>
View all
FREE! Surf-Forecast.com widget for your website
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
Nearest