Ruby Bay Surf Break

Lat Long: 41.21° S 173.09° E

Ruby Bay Surf Forecast and Surf Report

Issued: 5 pm 08 Jul 2026 (local time)

Forecast update in  hr  min

Today's Ruby Bay sea temperature is
12.4° C
0.6° 

Ruby Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Ruby Bay surf forecast from 8 Jul 2026:

  • Best quality surf: Monday 13 Jul, 9PM (local time) - 4.5ft (1.4m), 8s period, N swell with offshore winds.
  • Most powerful swell: Monday 13 Jul, 6PM (local time) - 6ft (1.9m), 7s period, N swell with 377 kJ wave energy.
  • Next surfable swell (1★+): Monday 13 Jul, 9PM (local time) - 4.5ft (1.4m), 8s 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 Monday (Jul 13) at 9PM. The primary swell is predicted to be 1.4m and 8s 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 1.9m 7s and forecast to arrive on Monday (Jul 13) 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 0.6m 7s period and expected on Tuesday (Jul 14) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 13th Jul)4.5ft (1.4m) 8s
Best Surf 9PM (Mon 13th Jul)4.5ft (1.4m) 8s
Most Powerful 6PM (Mon 13th Jul)6ft (1.9m) 7s

Table - best surf conditions forecast for Ruby Bay over the next 16 days.


Alright, Rusty here, checking in for your local surf outlook.

Mate, I’m not going to sugarcoat it – it’s a tough stretch ahead for Ruby Bay (Ruby-Bay). This spot is a sheltered little point that rarely breaks, and the next 16 days aren’t looking like they’ll change that. We’ve got a long gap of flat, poor conditions from the start through the first week, with barely a ripple. It’s pretty normal for this area when the forecast goes quiet, so don’t get too disheartened.

The water’s hitting about 54°, which is average for the time of year – nothing unusual to report there.

Looking at the chart, Wednesday afternoon (July 8th) kicks things off with a tiny 0.3 ft north swell, combined energy of just 1 and glassy conditions, but it’s still poor. That flat spell runs all the way through to Monday morning (July 13th), when we finally see a 2 ft north swell with a short period of 5 seconds and a combined energy of 14 – still not enough to get excited about, but the wind glassing off is a nice touch.

The real change happens Monday afternoon (July 13th) when a 5 ft north swell rolls in with a 6-second period and combined energy hitting 158. That’s the biggest pulse of the whole outlook, but it comes with a 15 km/h north cross-onshore wind, making it messy. For a beach-and-reef setup like this, that’s looking more interesting for kite surfing than paddling.

After that, we drift back into tiny waves – a few 2 ft pulses on Tuesday (July 14th) and again on Friday afternoon (July 17th), Tuesday morning (July 18th) with 2 ft north swell and light offshore winds, but the energy stays weak (55 tops). Even the 2 ft on Sunday (July 19th) is from the ESE with a period of just 4 seconds – weak and slow.

The one standout – if you can call it that – is Tuesday morning (July 14th). We’ve got a 2 ft north swell, combined energy of 48 and glassy off the SW wind. It’s clean but tiny, and with Ruby Bay being inconsistent, you’d be gambling on a wave. Still, it’s the best of what’s on the table.

For the second week, it’s more of the same: small pulses of north swell with periods from 4 to 20 seconds – those longer period ones (16 to 20 seconds) will be drawn and weak, better suited to a reef or point than here, but the break rarely works even then. Crowds at Ruby Bay are sometimes a factor, but honestly, there won’t be many people out in this.

Bottom line: if you’re desperate, try Tuesday morning (July 14th) or Sunday morning (July 19th) for a clean, tiny wave. Otherwise, it’s a long wait. Forecasts can change, but for now, don’t hold your breath.

Stay keen.
Rusty

Short Range Forecast

Mostly dry. Very mild (max 13°C on Wed afternoon, min 2°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 15mm), heaviest on Mon afternoon. Very mild (max 12°C on Tue morning, min 3°C on Sat night). Wind will be generally light.

Wed
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
N
8
0.1
NW
17
0.1
N
22
0.1
NW
15
0.1
NE
4
0.1
NW
18
0.1
NW
16
0.1
NE
4
0.1
N
14
0.1
NW
17
0.1
NW
16
0.1
NW
16
0.1
NW
16
0.1
NW
15
0.5
N
5
1.4
N
6
1.2
N
8
0.7
N
7
0.6
N
7
0.1
N
18
0.2
NNW
16
Wave Graph
Metric surfscale
Energy kJ
1
0
9
0
1
0
0
1
4
0
0
0
0
0
10
158
160
48
34
6
0
Wind (km/h)
5
SE
10
SSW
10
SSW
5
S
10
SSW
5
SSW
5
N
5
SSW
5
SSW
5
NNE
5
SSW
5
SSW
5
NE
5
SW
5
WSW
15
N
10
SW
10
SW
5
SW
5
SW
5
SW
Wind State
glassy
off
cross-off
glassy
cross-off
cross-off
glassy
off
off
glassy
off
glassy
glassy
glassy
glassy
cross-on
off
off
glassy
off
off
High Tide
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
9:28PM4.06m
9:33AM3.98m
10:17PM4.29m
10:29AM4.09m
Low Tide
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
2:37PM1.08m
3:10AM0.84m
3:39PM0.90m
4:03AM0.69m
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
mod rain
rain showers
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:52
7:50
7:50
7:50
7:50
7:50
7:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:12
5:13
5:14
5:14
5:15
5:15
5:16
5:16
 mm
8
7
Temp °C
13
8
11
12
4
8
9
4
8
9
4
8
9
7
8
11
9
12
15
9
15
Feels °C
12
5
8
10
0
5
6
1
6
6
1
6
7
5
7
8
7
10
13
7
13
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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How to use the Wavefinder 

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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

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