Surf Forecasts:
Ruby Bay surf forecast from 24 Jul 2026:
- Most powerful swell: Thursday 30 Jul, 6PM (local time) - 4.5ft (1.4m), 7s period, N swell with 195 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 1.4m 7s and forecast to arrive on Thursday (Jul 30) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Thursday (Jul 30) at 6PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6PM (Thu 30th Jul) | 4.5ft (1.4m) 7s |
Table - best surf conditions forecast for Ruby Bay over the next 16 days.
The Lowdown
Hey folks, Rusty here. Let's be straight with you – this stretch out at Ruby Bay is looking pretty bleak for the next 16 days. I've checked every nook and cranny, and there's just nothing worth paddling out for. The swell window is sheltered from the north, and the only directions that send any energy in are from the north, and it's barely a whisper. The spot is a point break that rarely breaks, and this forecast sadly backs that up.
We're starting from Saturday, July 25th, with a small 3ft swell from the north, but the period is a short 8 seconds and the combined energy is a weak 80, so it's just not going to form any rideable wave. The wind is offshore in the morning, which would be clean, but with such weak energy, it's a non-starter. That afternoon, it's even smaller at 2ft and the conditions are just as poor. The rest of the 16-day window is a graveyard of zeros and near-zeros. There are a few tiny pulses that pop up, like on Thursday, July 30th, when we see a 4ft swell from the NNW (combined energy 152), but it's coming from the wrong direction and the period is only 6 seconds. It's a total tease. The wind is glassy that morning, but the swell is just too jumbled and weak to do anything with.
The only real standout in terms of a pulse is on the morning of Thursday, July 30th, with glassy conditions and a bit of energy, but the swell direction is NNW and the period is a short 6 seconds. It's a beach-and-reef setup, and with the lack of quality, it looks more interesting for kite surfing than paddle surfing. The water temperature is about average for this time of year, so no worries there, but it doesn't matter when there's nothing to ride.
The long-range stuff around the 9th of August shows a 4ft swell from the ESE, but the period is only 5 seconds and the energy is 97. It's still not enough to get excited about. This is just one of those stretches where the surf is shut down. It tends not to stay this poor for long, but for now, leave the boards at home.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Sat afternoon. Very mild (max 11°C on Fri night, min 3°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 12°C on Thu morning, min 3°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||
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 8 | N 8 | N 8 | NNW 15 | NNW 14 | NNW 14 | NNW 14 | NNW 13 | N 12 | N 7 | N 7 | N 6 | N 6 | NW 11 | NW 5 | NW 5 | NNW 6 | N 7 | N 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 119 | 80 | 60 | 0 | 0 | 0 | 0 | 0 | 3 | 4 | 1 | 1 | 1 | 0 | 32 | 57 | 108 | 0 | 73 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | glassy | glassy | cross-on | off | off | on | off | off | on | off | glassy | glassy | glassy | glassy | cross-on | cross |
High Tide | 6:24AM3.16m | 7:15PM3.28m | 7:30AM3.18m | 8:20PM3.44m | 8:27AM3.28m | 9:06PM3.61m | 9:14AM3.43m | 9:44PM3.76m | 9:55AM3.59m | 10:19PM3.89m | 10:33AM3.72m | 10:53PM4.00m | |||||||
Low Tide | 00:16AM1.78m | 12:23PM1.71m | 1:19AM1.70m | 1:26PM1.67m | 2:11AM1.58m | 2:24PM1.55m | 2:53AM1.45m | 3:15PM1.37m | 3:29AM1.31m | 3:58PM1.17m | 4:03AM1.18m | 4:34PM0.99m | |||||||
 |  |  |  | |  |  | | | | | | | |  | | | | | |
 | — | 7:41 | — | — | 7:41 | — | — | 7:39 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — |
 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — |
mm | — | — | 2 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 |
Temp °C | 11 | 11 | 11 | 6 | 8 | 9 | 5 | 9 | 10 | 5 | 9 | 9 | 5 | 10 | 11 | 8 | 12 | 12 | 11 |
Feels °C | 10 | 9 | 9 | 3 | 6 | 6 | 3 | 7 | 7 | 3 | 7 | 6 | 3 | 8 | 9 | 6 | 10 | 8 | 9 |
Swell 1 Height (m) Direction Period (s) | N 8 | N 8 | N 8 | NNW 15 | NNW 9 | NNW 8 | NNW 14 | NNW 8 | NNW 7 | N 7 | N 7 | N 6 | — | — | NNW 4 | N 5 | N 5 | — | N 7 |
| kJ | 119 | 80 | 60 | 125 | 15 | 6 | 18 | 6 | 5 | 4 | 1 | 1 | — | — | 11 | 21 | 36 | — | 73 |
Swell 2 Height (m) Direction Period (s) | N 10 | NNW 17 | NNW 15 | E 4 | NNW 14 | NNW 14 | NNW 7 | NNW 13 | N 12 | NW 12 | — | NW 11 | N 6 | NW 6 | — | NW 14 | NNE 6 | — | NNW 17 |
| kJ | 8 | 28 | 142 | 1 | 21 | 20 | 5 | 16 | 3 | 5 | — | 5 | 1 | 2 | — | 8 | 4 | — | 29 |
Swell 3 Height (m) Direction Period (s) | NW 17 | — | — | — | ENE 3 | — | — | — | NW 12 | — | — | — | NW 11 | NW 11 | — | — | N 14 | — | — |
| kJ | 12 | — | — | — | 1 | — | — | — | 6 | — | — | — | 5 | 5 | — | — | 4 | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 2 | — | — | — | — | — | — | — | — | — | — | — | — | NW 5 | NW 5 | NNW 6 | N 7 | — |
| kJ | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 32 | 57 | 108 | 196 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 14 | 85 | 38 | 83 | 38 | 83 | 83 | 83 | 83 | 83 | 83 | 14 | 14 | 7 | 129 | 88 |
Best forecast wave conditions in Nelson - Tasman Bay | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
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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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