Ruby Bay Surf Break

Lat Long: 41.21° S 173.09° E

Ruby Bay Surf Forecast and Surf Report

Issued: 5 pm 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Ruby Bay sea temperature is
11.8° C
0.8° 

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 30 Jul 2026:

  • Best quality surf: Thursday 6 Aug, 3AM (local time) - 6.5ft (2.0m), 7s period, N swell with glassy winds.
  • Most powerful swell: Thursday 6 Aug, 6AM (local time) - 6ft (1.9m), 8s period, N swell with 470 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 3AM (local time) - 6.5ft (2.0m), 7s 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 Thursday (Aug 06) at 3AM. The primary swell is predicted to be 2.0m and 7s period. 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 1.9m 8s and forecast to arrive on Thursday (Aug 06) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 8s period and expected on Friday (Jul 31) at 9AM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 6th Aug)6.5ft (2.0m) 7s
Best Surf 3AM (Thu 6th Aug)6.5ft (2.0m) 7s
Most Powerful 6AM (Thu 6th Aug)6ft (1.9m) 8s

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


The Lowdown

Alright, let’s talk about Ruby Bay. This point break is a real sleeper, and by that I mean it barely ever wakes up. The next couple of weeks are looking real quiet, which isn’t surprising for a spot that rarely breaks. The water temp is around 53°F, right where it should be for this time of year – nothing unusual there.

We start off with a long stretch of nothing. Days go by with no surf to speak of. The first tiny hint of a wave shows up on the morning of Sunday, August 2nd – a 0.3ft swell from the north with almost no energy at all. You’d get more action in a bathtub. The whole first week is flat, with poor conditions and nothing to chase.

Then, on Thursday, August 6th, there’s a flicker of life. The morning brings a 6ft swell from the north, with a 8-second period and moderate energy (392). That’s the single standout in the whole outlook. That size is a bit much for beginners but for experienced folks it’s worth a look. The wind is glassy with a light southwest breeze, so it should be clean. The swell direction matches what this break likes – north – so there might be a few waves. Just remember, this spot rarely breaks, so this is a rare event. The afternoon drops off to 4ft with less energy (157), still glassy but not as good.

After the 6th, it’s back to tiny swell and weak energy. From Friday the 7th all the way through to the 14th, we’re looking at 0.3ft to 1ft swells with almost no punch. Conditions are often clean, but there’s just nothing to ride. There’s a little blip on Wednesday, August 12th afternoon with 2ft from the north-northeast, but the energy is only 24 – barely a bump.

So, bottom line: the only window that might give you a wave or two is the morning of Thursday, August 6th. It’s not going to be epic, but it’s the best this bay has to offer in the next two weeks. The rest is a flat spell, which is pretty normal for here. Keep an eye on the forecast, but don’t get your hopes up. Rusty out.

Short Range Forecast

Light rain (total 6mm), mostly falling on Thu night. Very mild (max 12°C on Thu afternoon, min 2°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Mon afternoon, min 5°C on Sun night). Wind will be generally light.

Thu
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
PM
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
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
N
6
1.3
N
7
1.8
NW
8
0.9
N
8
0.4
NNW
14
0.4
NNW
7
0.3
NNW
7
0.3
NW
3
0.1
N
6
0.1
N
6
0.1
N
21
0.1
N
8
0.1
NW
18
0.1
NW
17
0.1
NW
16
0.1
NW
16
0.1
NW
15
0.1
N
14
0.1
N
13
1.5
N
6
Wave Graph
Metric surfscale
Energy kJ
61
181
0
90
0
0
0
2
1
1
9
1
0
0
0
0
0
4
3
170
Wind (km/h)
10
N
5
WSW
10
WSW
15
W
10
SSW
10
SSW
5
E
10
SSW
10
SW
5
NE
10
SW
10
WSW
10
WSW
5
SW
5
SSW
5
NE
0
SE
5
SE
10
NNE
5
SW
Wind State
cross-on
cross-off
cross-off
cross-off
cross-off
off
glassy
off
off
on
off
off
cross-off
off
glassy
on
glassy
glassy
on
glassy
High Tide
10:53PM4.00m
11:11AM3.81m
11:26PM4.08m
11:48AM3.84m
00:00AM4.12m
12:25PM3.84m
00:35AM4.10m
1:02PM3.81m
1:11AM4.02m
1:39PM3.75m
1:51AM3.89m
2:18PM3.66m
2:37AM3.72m
Low Tide
4:34PM0.99m
4:37AM1.06m
5:07PM0.85m
5:11AM0.95m
5:38PM0.78m
5:47AM0.88m
6:10PM0.79m
6:22AM0.86m
6:42PM0.87m
7:00AM0.90m
7:19PM1.00m
7:40AM1.01m
8:02PM1.17m
cloud
rain showers
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:35
7:35
7:33
7:33
7:31
7:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:30
5:30
5:31
5:32
5:34
5:35
5:36
 mm
6
Temp °C
12
10
10
10
6
10
11
4
10
10
7
14
15
10
9
9
8
9
9
6
Feels °C
10
9
6
5
3
6
8
1
7
7
3
11
11
8
7
7
6
7
6
4
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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