Ruby Bay Surf Break

Lat Long: 41.21° S 173.09° E

Ruby Bay Surf Forecast and Surf Report

Issued: 5 am 16 Jul 2026 (local time)

Forecast update in  hr  min

Today's Ruby Bay sea temperature is
11.0° C
1.8° 

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 15 Jul 2026:

  • Most powerful swell: Wednesday 22 Jul, 6PM (local time) - 0.5ft (0.1m), 15s period, N swell with 4 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 0.1m 15s and forecast to arrive on Wednesday (Jul 22) at 6PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 6s period and expected on Thursday (Jul 16) at 12PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 6PM (Wed 22nd Jul)0.5ft (0.1m) 15s

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


The Lowdown

G’day, Rusty here. Look, I’ll be straight with you – this outlook for Ruby Bay is a tough one. We’re looking at a long, dry spell with barely a ripple for days on end. The first decent sign of life doesn’t pop up until Wednesday the 29th of July, and even then, it’s not exactly a world-beater.

For the first week and a half, from the 16th right through to the 28th, it’s basically flat. You’ll see a few tiny 0.3ft pulses of north swell with virtually no energy (combined energy readings of 1 to 7), but they’re not going to produce anything rideable. The wind is often light and offshore or glassy, which is a tease – the conditions would be perfect if there was any swell. The water temp is about average for this time of year, so no surprises there for a wetsuit.

The only real window of opportunity is on Wednesday the 29th of July. The morning brings a north pulse of 4ft, but with a short period of 6 seconds, it’s going to be very weak and lumpy. The energy is only moderate (135). The real standout is the afternoon. The swell lifts to 6ft from the north, with a period of 7 seconds, producing moderate wave energy (279). The wind goes glassy, which is a major positive – it’ll be absolutely clean. Now, that swell height is getting into the territory where it’s a bit much for beginners, but for a competent surfer, it’s the only game in town. It’s a rare break though, so you’ll have to be patient and hope it does its thing. The north swell direction is well off the optimum for this point break, which ideally wants a north swell, so it’s a bit of a mixed bag. The combined energy is moderate, so there’s some punch, but it’s short period, so it won’t be the most powerful wave.

After that, it drops back to tiny, poor surf for the rest of the forecast. Thursday the 30th and Friday the 31st have 3ft and 2ft north swells, but the energy is weak (90 and 49) and the conditions are average.

So, the call is pretty simple. If you’re desperate for a wave, the afternoon of Wednesday the 29th of July is your only real shot at Ruby Bay. It’s a rare, inconsistent spot, so don’t expect miracles, but with glassy conditions and a 6ft north swell, it’s the standout by default. Most of the time, this place is just flat, so this run of bad surf is pretty standard for the area.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Thu afternoon, min 4°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Mon night. Very mild (max 14°C on Mon morning, min 6°C on Tue night). Wind will be generally light.

Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
AM
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
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
NNW
16
0.2
NNW
15
0.1
NW
15
0.1
N
7
0.1
NW
16
0.1
NW
16
0.1
NW
16
0.1
NW
18
0.1
NW
18
0.1
N
12
0.1
N
11
0.1
N
11
0.1
N
10
0.1
N
10
0.1
N
10
0.1
N
13
0.1
N
10
0.1
N
10
0.1
N
10
0.1
N
10
0.1
N
10
Wave Graph
Metric surfscale
Energy kJ
0
0
0
1
0
0
0
0
0
3
2
2
2
2
2
3
2
2
2
2
2
Wind (km/h)
5
SW
5
WSW
10
SW
10
SW
5
WNW
10
SW
15
SW
15
SW
10
SW
5
S
5
NNE
5
SSW
5
SSW
5
NE
5
SSW
5
SSW
5
NNE
5
SW
10
SW
5
N
5
SW
Wind State
glassy
cross-off
off
off
glassy
off
off
off
off
glassy
cross-on
glassy
glassy
on
glassy
glassy
glassy
off
off
cross-on
off
High Tide
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
2:59PM3.61m
3:23AM3.56m
3:44PM3.43m
Low Tide
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
8:33AM1.25m
8:41PM1.39m
9:23AM1.45m
9:39PM1.61m
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
rain showers
part cloud
cloud
cloud
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:48
7:48
7:47
7:47
7:46
7:45
7:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:17
5:19
5:20
5:21
5:21
5:22
5:22
 mm
2
Temp °C
15
16
9
12
13
6
12
13
8
11
12
9
14
14
10
9
10
8
13
14
8
Feels °C
13
14
6
9
11
3
8
9
5
10
10
8
13
12
9
8
8
6
11
12
6
  • 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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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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