Surf Forecasts:
Ruby Bay surf forecast from 14 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 9PM (local time) - 5ft (1.5m), 6s period, NNW swell with glassy winds.
- Most powerful swell: Tuesday 14 Jul, 9PM (local time) - 5ft (1.5m), 6s period, NNW swell with 149 kJ wave energy.
- Next surfable swell (1★+): Tuesday 14 Jul, 9PM (local time) - 5ft (1.5m), 6s period with NNW 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 9PM. The primary swell is predicted to be 1.5m and 6s period with a secondary swell of 0.9m and 7s. 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 1.5m 6s and forecast to arrive on Tuesday (Jul 14) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Jul 16) at 6AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 14th Jul) | 5ft (1.5m) 6s |
| Best Surf | 9PM (Tue 14th Jul) | 5ft (1.5m) 6s |
| Most Powerful | 9PM (Tue 14th Jul) | 5ft (1.5m) 6s |
Table - best surf conditions forecast for Ruby Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what Ruby Bay has in store for us.
To be straight with you, this is a tough stretch. Looking at the whole 16-day run, there’s just not much to get excited about. We've got a long quiet spell coming up. From the start on Tuesday the 14th right through to the end of the forecast, the surf is tiny and honestly, it’s just not worth paddling out for. You’re looking at a solid blank run of days here.
The only tiny bump we get is on the afternoon of Tuesday the 14th. Ruby Bay will see a small 3ft swell from the North, with a short period of 7 seconds. It's glassy though, with the wind going dead calm, so the water will be like a mirror. That’s the best you’ll get, but the wave energy is really weak at only 68, so it’s not going to be doing much. The water temperature is sitting at 53°F, which is a bit colder than normal for this time of year.
Beyond that, it’s a whole lot of nothing. Tiny little pulses of swell, most under 0.7ft, with the odd period dragging on forever. For example, on Saturday the 18th, we get a tiny 0.3ft swell but with a very long period of 18 seconds – that’s a groundswell but there’s no power behind it (energy of just 6). It’ll just roll straight past a beach break like this.
The outlook stays flat through the second week too. A few little 0.3ft and 0.7ft pulses from the North show up around the 22nd and 23rd, with clean conditions and glassy mornings, but again, combined energy is in the single digits. It’s just not surfable in any meaningful way. There’s no standout day here, not a single one I’d point you to.
Ruby Bay is a sheltered point that rarely breaks, and this forecast proves it. When it’s flat, it’s flat. Nothing to do but wait for the next change in the charts.
Take care,
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Very mild (max 15°C on Wed afternoon, min 5°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 14°C on Sat afternoon, min 3°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
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) | N 7 | N 7 | N 7 | N 7 | NW 16 | NNW 5 | N 6 | NW 6 | NNW 5 | NW 15 | N 7 | N 6 | N 6 | N 18 | ESE 3 | NW 17 | NW 16 | N 11 | N 10 | N 9 | N 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 85 | 68 | 57 | 31 | 0 | 27 | 0 | 52 | 0 | 0 | 1 | 1 | 1 | 6 | 3 | 0 | 0 | 2 | 2 | 2 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | glassy | glassy | glassy | glassy | glassy | off | cross-off | off | off | on | off | off | off | glassy | cross-off | glassy | cross-off | glassy | glassy | off |
High Tide | 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 | 2:17PM3.79m | 2:36AM3.76m | |||||||
Low Tide | 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 | 7:48AM1.03m | 7:57PM1.16m | ||||||||
 |  |  | | |  | | |  | | | | | | | | | | | | | |
 | 7:50 | — | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:47 | — | — | 7:47 | — | — | 7:46 | — | — |
 | — | 5:16 | — | — | 5:16 | — | — | 5:17 | — | — | 5:19 | — | — | 5:20 | — | — | 5:21 | — | — | 5:21 | — |
mm | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 14 | 11 | 13 | 15 | 12 | 13 | 13 | 9 | 11 | 12 | 7 | 11 | 14 | 8 | 9 | 9 | 5 | 8 | 9 | 7 |
Feels °C | 11 | 13 | 10 | 12 | 15 | 11 | 10 | 11 | 6 | 9 | 10 | 5 | 7 | 11 | 6 | 6 | 7 | 2 | 6 | 7 | 4 |
Swell 1 Height (m) Direction Period (s) | N 7 | N 7 | N 7 | N 7 | N 6 | NNW 16 | N 6 | NNW 6 | NNW 5 | NNW 5 | NW 15 | NW 15 | NW 15 | NW 4 | ENE 5 | ENE 4 | ENE 4 | ENE 3 | NW 15 | NW 14 | N 10 |
| kJ | 85 | 68 | 57 | 31 | 20 | 24 | 24 | 18 | 8 | 3 | 9 | 9 | 9 | 1 | 8 | 3 | 1 | 1 | 9 | 8 | 2 |
Swell 2 Height (m) Direction Period (s) | NW 8 | NW 13 | NNW 12 | NW 16 | NW 16 | — | NNW 16 | NW 15 | NW 15 | NW 15 | NW 5 | N 6 | N 6 | NW 15 | NW 18 | NW 17 | NW 16 | NW 16 | — | N 9 | NW 14 |
| kJ | 97 | 6 | 15 | 69 | 63 | — | 24 | 9 | 9 | 9 | 1 | 1 | 1 | 9 | 12 | 12 | 10 | 10 | — | 2 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | NW 18 | — | — | — | — | — | — | — | N 7 | — | — | N 18 | NW 4 | — | — | N 11 | N 10 | — | — |
| kJ | — | — | 13 | — | — | — | — | — | — | — | 1 | — | — | 6 | 1 | — | — | 2 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | — | NNW 8 | — | — | NNW 7 | NNW 5 | WSW 2 | NW 6 | WSW 2 | SSW 3 | — | — | — | — | ESE 3 | — | — | — | — | — | — |
| kJ | — | 161 | — | — | 38 | 27 | 1 | 52 | 1 | 2 | — | — | — | — | 3 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 115 | 14 | 14 | 14 | 115 | 83 | 83 | 38 | 38 | 83 | 142 | 38 | 88 | 88 | 83 | 83 | 83 | 83 |
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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