Surf Forecasts:
Ruby Bay surf forecast from 26 Aug 2026:
- Best quality surf: Friday 28 Aug, 9PM (local time) - 4.5ft (1.3m), 9s period, N swell with offshore winds.
- Most powerful swell: Friday 28 Aug, 12PM (local time) - 8ft (2.4m), 10s period, N swell with 1,043 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 9PM (local time) - 4.5ft (1.3m), 9s period with N 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 Friday (Aug 28) at 9PM. The primary swell is predicted to be 1.3m and 9s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Ruby Bay in the next 16 days are 2.4m 10s and forecast to arrive on Friday (Aug 28) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 10s period and expected on Friday (Aug 28) at 12PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Fri 28th Aug) | 4.5ft (1.3m) 9s |
| Best Surf | 9PM (Fri 28th Aug) | 4.5ft (1.3m) 9s |
| Most Powerful | 12PM (Fri 28th Aug) | 8ft (2.4m) 10s |
Table - best surf conditions forecast for Ruby Bay over the next 16 days.
The Lowdown
Alright, Rusty here. Let's get straight into it.
Look, I'm not gonna sugarcoat it – we've got a proper dry spell on our hands. The next 16 days are looking pretty grim for Ruby Bay, with no real surf to get excited about. It's one of those stretches where you're better off cleaning the wax off your board or getting the gear ready for a trip.
Ruby Bay is a point break that's a real fair-weather friend, and it's rarely breaking at the best of times. The water temperature at the moment is 53°, which is about 1° cooler than usual for this time of year, so nothing too out of the ordinary – just a standard winter chill, so you'll want the thickest wetsuit you've got.
We kick off on Wednesday the 26th of August with a couple of tiny, weak pulses. A 1 ft swell from the NW on Wednesday morning, dropping to a 3 ft from the NNW later, but periods are a short 4 to 6 seconds and the combined energy is a pitiful 5. It's glassy, sure, but it's basically a lake. The wave comment is "poor surf conditions" – enough said.
Thursday the 27th is a complete write-off with 0.3 ft surf. Friday the 28th gets a bit of a wind bump from the north, but it's a messy 8 ft at 9 seconds with cross-onshore winds. The energy jumps to 980 (moderate), but it's all windslop and chop, so more of a kitesurfing session than a paddle surf one if you're into that. By Saturday afternoon, it's back to tiny 0.3 ft bumps.
Then we slide into a dead zone. From Sunday the 30th of August right through to Tuesday the 10th of September, there's almost nothing happening. A few days show a tiny 0.3 ft or 2 ft wave, but with periods of 4 or 5 seconds and zero energy, it's just a ripple. The wind is often offshore or glassy, but there's no swell to work with. It's a long, flat stretch.
The only real standout, if you can call it that, is a small window on Friday the 28th afternoon. The swell is 6 ft from the north at 10 seconds, with a combined energy of 652 (moderate). The wind is cross-onshore and it's fairly choppy, so it's not great for a clean wave, but it's the biggest pulse we see. For a kitesurfer, it might be worth a look, but for a surfboard, it's a hard pass.
Bottom line: there are no good surf options in this 16 day window. Ruby Bay is a rare-breaker and this is one of those times. The forecasts can change, but for now, sit tight.
Rusty
Short Range ForecastHeavy rain (total 24mm), heaviest during Fri morning. Very mild (max 16°C on Fri afternoon, min 9°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat afternoon. Very mild (max 14°C on Sun morning, min 7°C on Sun night). Winds increasing (light winds from the WSW on Sat morning, fresh winds from the SW by Sun night). | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | NW 4 | NNW 6 | NW 6 | N 17 | N 16 | N 5 | N 9 | N 10 | N 9 | NNW 8 | N 21 | NNW 7 | NNW 5 | NNW 5 | NW 15 | NNW 15 | NW 5 | NNW 15 | NE 4 | NE 3 | NW 20 |
Wave Graph | |||||||||||||||||||||
5 | 60 | 86 | 6 | 5 | 27 | 980 | 652 | 225 | 0 | 8 | 0 | 15 | 0 | 0 | 0 | 11 | 0 | 6 | 2 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | cross-on | glassy | off | off | off | cross-off | cross-off | off | off | cross-off | off | off | cross-off | off |
High Tide | 9:23PM3.67m | 9:34AM3.60m | 9:56PM3.88m | 10:13AM3.76m | 10:29PM4.06m | 10:51AM3.89m | 11:01PM4.17m | 11:27AM3.97m | 11:34PM4.21m | 12:03PM4.01m | 00:09AM4.17m | 12:37PM3.98m | 00:46AM4.05m | ||||||||
Low Tide | 2:57PM1.28m | 3:09AM1.27m | 3:34PM1.02m | 3:44AM1.07m | 4:08PM0.81m | 4:17AM0.88m | 4:39PM0.68m | 4:49AM0.73m | 5:10PM0.62m | 5:22AM0.65m | 5:43PM0.63m | 5:56AM0.66m | 6:16PM0.71m | ||||||||
7:01 | — | — | 7:01 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | |
— | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | |
mm | — | — | — | 1 | — | 2 | 20 | 1 | — | — | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 13 | 13 | 10 | 10 | 13 | 15 | 16 | 11 | 13 | 12 | 9 | 14 | 13 | 11 | 13 | 13 | 12 | 16 | 16 | 10 |
Feels °C | 11 | 13 | 13 | 9 | 9 | 10 | 13 | 13 | 9 | 10 | 9 | 7 | 11 | 9 | 4 | 9 | 8 | 8 | 14 | 13 | 7 |
Swell 1 Height (m) Direction Period (s) | NW 15 | — | NNW 5 | NNW 5 | N 5 | NW 16 | — | — | N 9 | NNW 8 | NNW 8 | NNW 5 | N 7 | NNW 5 | NNW 7 | NNW 15 | NNW 15 | NNW 6 | NNW 6 | NE 3 | NNW 5 |
8 | — | 27 | 8 | 4 | 10 | — | — | 225 | 90 | 75 | 8 | 1 | 24 | 17 | 86 | 21 | 12 | 4 | 2 | 5 | |
Swell 2 Height (m) Direction Period (s) | — | — | NW 14 | NW 13 | N 16 | — | — | — | — | — | N 21 | NNW 7 | NW 18 | NNW 10 | NW 15 | — | — | NNW 15 | NNW 15 | NNW 15 | NW 15 |
— | — | 7 | 7 | 5 | — | — | — | — | — | 8 | 10 | 12 | 9 | 54 | — | — | 21 | 21 | 21 | 9 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | N 17 | — | — | — | — | — | — | — | NW 19 | — | NW 16 | — | — | — | NW 10 | — | NNW 6 | NW 20 |
— | — | — | 6 | — | — | — | — | — | — | — | 14 | — | 11 | — | — | — | 4 | — | 4 | 15 | |
Wind waves Height (m) Direction Period (s) | NW 4 | NNW 6 | NW 6 | E 3 | E 3 | N 5 | N 9 | N 10 | NNW 9 | — | — | W 2 | NNW 5 | WNW 3 | WSW 4 | — | NW 5 | — | NE 4 | NNW 7 | WSW 2 |
5 | 60 | 86 | 3 | 2 | 27 | 980 | 652 | 508 | — | — | 1 | 15 | 3 | 16 | — | 11 | — | 6 | 18 | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 83 | 14 | 14 | 88 | 83 | 83 | 193 | 129 | 0 | 14 | 14 | 83 | 30 | 115 | 125 | 14 | 115 | 83 | 142 | 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











