Ruby Bay Surf Break

Lat Long: 41.21° S 173.09° E

Ruby Bay Surf Forecast and Surf Report

Issued: 11 pm 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Ruby Bay sea temperature is
12.4°C
0.0° 

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 3 Sep 2026:

  • Most powerful swell: Sunday 6 Sep, 9PM (local time) - 5ft (1.6m), 7s period, N swell with 229 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 1.6m 7s and forecast to arrive on Sunday (Sep 06) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Friday (Sep 04) at 12PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 9PM (Sun 6th Sep)5ft (1.6m) 7s

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


The Lowdown

Alright folks, Rusty here. Let’s talk about the next 16 days at Ruby Bay. Honestly, it’s a pretty flat stretch for the most part, with a couple of brief windows where things might just get interesting.

First up, there’s next to nothing happening for the first several days. We’re looking at a gap from the start of the period right through until the morning of Sunday, September 6th, with no real surf to speak of. The wind is glassy or light, but the ocean is just not cooperating.

Finally, on Sunday the 6th, a small pulse of swell shows up in the morning. We’re talking about 4ft of swell from the NNW, but the period is a short 6 seconds, so it’s weak and unorganized (combined energy of just 77). The conditions are glassy, but the wave quality is poor – not worth getting wet for. The rest of that week is more of the same: tiny, weak swell with poor surf conditions.

Now, the one moment that might turn a head is around Wednesday the 16th in the morning. There’s a 4ft swell from the north with a 10-second period, giving a moderate combined energy of 220. The wind is glassy, and the surf is described as surfable but very ordinary. It’s not a classic, but if you’re desperate for a paddle, it’s the best we’ve seen in a while.

That early morning session on the 16th is the only real standalone window. The break is a sheltered point, rarely breaks, and crowds are sometimes there. It’s a beginner-friendly spot, so the 4ft swell is fine for learning, but the quality is just average.

Then, by Friday the 18th, there’s another pulse: 5ft from the north at 8 seconds, with a moderate combined energy of 291. That’s a bit more size, but the period is still short, and the wind goes onshore in the afternoon. The morning looks glassy, so it’s another surfable but very ordinary option. The 5ft is pushing the limit for beginners, but still manageable.

Overall, there’s no standout day here. The best of a quiet bunch is the Wednesday the 16th morning session with glassy conditions and a bit of north swell. It’s nothing to write home about, but it’s the only time the stars align even slightly.

Rusty.

Short Range Forecast

Moderate rain (total 16mm), heaviest on Sun afternoon. Very mild (max 15°C on Fri morning, min 9°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 24mm), heaviest during Sun night. Very mild (max 13°C on Sun night, min 8°C on Mon night). Wind will be generally light.

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
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
Wave
Height (m)
Direction
Period (s)
1.1
NW
6
1.8
NNW
7
1.2
N
8
0.5
NNW
10
0.4
NW
15
1.6
NW
6
1.4
NW
6
1.1
NNW
6
1.5
NNW
6
1.3
N
7
1.1
NNE
7
0.7
N
8
0.4
N
9
0.5
N
9
0.4
N
8
0.3
N
8
0.2
N
8
1.1
NW
5
0.1
N
18
Wave Graph
Metric surfscale
Energy kJ
69
0
0
0
0
0
0
77
0
144
136
54
24
36
22
12
5
51
6
Wind (km/h)
5
SW
10
W
20
WSW
15
WSW
0
WNW
10
WNW
5
W
0
WNW
5
NNW
10
NNE
10
S
5
S
0
SE
5
S
10
NE
5
SE
5
N
5
NNE
10
WSW
Wind State
glassy
cross-off
cross-off
off
glassy
cross-off
glassy
glassy
glassy
cross-on
cross-off
glassy
glassy
glassy
on
glassy
glassy
on
off
High Tide
2:15AM3.64m
2:34PM3.52m
3:13AM3.42m
3:37PM3.28m
4:28AM3.25m
5:21PM3.15m
5:57AM3.23m
7:12PM3.34m
7:19AM3.38m
8:17PM3.67m
8:24AM3.62m
9:03PM3.96m
Low Tide
8:03AM1.17m
8:39PM1.34m
9:04AM1.39m
10:10PM1.53m
10:24AM1.54m
11:47PM1.50m
12:02PM1.52m
1:06AM1.29m
1:28PM1.32m
2:06AM1.00m
2:31PM1.06m
2:55AM0.74m
rain showers
rain showers
clear
clear
part cloud
part cloud
light rain
light rain
mod rain
heavy rain
light rain
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:46
6:45
6:43
6:41
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:05
6:06
6:07
6:07
6:08
6:09
 mm
1
3
1
2
9
20
4
Temp °C
12
15
14
11
12
15
11
12
12
13
10
12
9
12
11
10
12
12
8
Feels °C
9
11
9
5
11
12
10
11
11
12
8
10
8
10
9
9
10
10
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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