Surf Forecasts:
Ruby Bay surf forecast from 1 Aug 2026:
- Most powerful swell: Saturday 8 Aug, 9AM (local time) - 1.5ft (0.4m), 7s period, N swell with 17 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 0.4m 7s and forecast to arrive on Saturday (Aug 08) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Monday (Aug 03) at 9PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Sat 8th Aug) | 1.5ft (0.4m) 7s |
Table - best surf conditions forecast for Ruby Bay over the next 16 days.
The Lowdown
Alright mates, Rusty here again. Let’s have it straight – I’ve combed through the numbers for the next 16 days, and it’s a proper flat spell. There’s no surf worth paddling out for.
We’re talking about Ruby Bay, a point break that’s sheltered and rarely breaks at the best of times. The water is sitting at about 53°, which is a touch over a degree cooler than usual for this time of year – nothing dramatic, just a little brisk.
From Saturday, August 1st, right through to Sunday, August 16th, the swell is tiny. It’s mostly 0.3 to 1 feet, with periods all over the place but never any real energy. The combined energy readings are in the single digits to low 20s – that’s about as weak as it gets. We get a few glassy and offshore moments, like Sunday morning the 2nd with a light 6 mph southwesterly, or Monday morning the 3rd with a clean 9 mph offshore, but it doesn’t matter when there’s nothing to ride.
The best little bump we see is on Saturday the 8th – 1 feet from the north at 7 seconds, with glassy conditions in the afternoon. But the energy is still only 23 – weak. We get a few long-period pulses of 18 seconds on the 5th and 12th, but the height is just 0.3 feet. For a point break that needs a north swell, there’s just never enough size or power.
Flat out, this is a blank run. With a break that rarely breaks, this kind of dry spell is pretty normal. If you’ve got a kite, you might make something of the afternoon onshore breezes, but for a paddle surfer, leave the boards at home. Forecasts can change, but for now, there’s nothing here.
Rusty.
Short Range ForecastMostly dry. Very mild (max 15°C on Mon afternoon, min 2°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 11°C on Tue afternoon, min 2°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
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) | NE 4 | N 7 | N 6 | N 6 | N 21 | N 8 | N 9 | NW 17 | NW 16 | NW 16 | NE 4 | N 18 | NE 4 | N 13 | N 12 | N 12 | N 11 | N 11 | N 4 | N 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1 | 1 | 1 | 1 | 9 | 1 | 1 | 0 | 0 | 0 | 3 | 6 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | 2 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | off | cross-on | off | off | off | off | off | cross-on | off | off | on | glassy | glassy | on | off | glassy | glassy | off |
High Tide | 00:00AM4.12m | 12:25PM3.84m | 00:35AM4.10m | 1:02PM3.81m | 1:11AM4.02m | 1:39PM3.75m | 1:51AM3.89m | 2:18PM3.66m | 2:37AM3.72m | 3:01PM3.53m | 3:32AM3.55m | 3:56PM3.38m | ||||||||
Low Tide | 5:38PM0.78m | 5:47AM0.88m | 6:10PM0.79m | 6:22AM0.86m | 6:42PM0.87m | 7:00AM0.90m | 7:19PM1.00m | 7:40AM1.01m | 8:02PM1.17m | 8:27AM1.17m | 9:00PM1.36m | 9:24AM1.34m | 10:21PM1.49m | |||||||
 |  | | | |  | | | | | | | | | | |  |  |  | | |
 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — |
 | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — |
Temp °C | 11 | 5 | 11 | 11 | 8 | 14 | 15 | 9 | 11 | 11 | 5 | 7 | 8 | 6 | 9 | 9 | 6 | 8 | 7 | 6 |
Feels °C | 8 | 2 | 9 | 8 | 4 | 10 | 11 | 7 | 9 | 8 | 1 | 4 | 4 | 3 | 7 | 6 | 4 | 7 | 6 | 3 |
Swell 1 Height (m) Direction Period (s) | NNW 7 | ENE 4 | N 6 | N 6 | — | NNW 4 | NNW 5 | NNW 4 | NNW 5 | NW 5 | NE 4 | NE 4 | — | — | N 12 | N 12 | — | N 5 | NNW 8 | NNW 8 |
| kJ | 10 | 2 | 1 | 1 | — | 2 | 3 | 3 | 2 | 1 | 3 | 3 | — | — | 3 | 3 | — | 2 | 7 | 13 |
Swell 2 Height (m) Direction Period (s) | NW 13 | N 7 | — | — | N 21 | NW 19 | NW 18 | NW 17 | NW 16 | NW 16 | NW 5 | — | — | N 13 | — | N 12 | N 9 | N 8 | N 4 | N 5 |
| kJ | 7 | 1 | — | — | 9 | 14 | 13 | 12 | 10 | 10 | 1 | — | — | 3 | — | 3 | 2 | 1 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | W 9 | NW 19 | W 5 | N 8 | N 9 | NW 11 | — | — | NW 15 | N 18 | — | — | — | — | N 11 | N 11 | — | ENE 4 |
| kJ | — | — | 1 | 14 | 1 | 1 | 1 | 5 | — | — | 8 | 6 | — | — | — | — | 2 | 2 | — | 2 |
Wind waves Height (m) Direction Period (s) | NE 4 | NNW 3 | SW 3 | — | SW 2 | WSW 3 | — | — | SSW 2 | — | — | — | NE 4 | — | — | — | — | — | — | S 2 |
| kJ | 1 | 1 | 2 | — | 1 | 1 | — | — | 1 | — | — | — | 2 | — | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 84 | 83 | 83 | 83 | 83 | 83 | 115 | 125 | 83 | 84 | 88 | 83 | 83 | 83 | 83 | 88 | 83 | 83 | 83 | 38 |
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)
Latest Updates
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