Ruby Bay Surf Break

Lat Long: 41.21° S 173.09° E

Issued: 5 pm 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Ruby Bay sea temperature is
12.3° C

Slightly cooler than normal

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 Jul 2026:

  • Best quality surf: Sunday 5 Jul, 12AM (local time) - 10ft (3.0m), 9s period, N swell with glassy winds.
  • Most powerful swell: Sunday 5 Jul, 12AM (local time) - 10ft (3.0m), 9s period, N swell with 1,535 kJ wave energy.
  • Next surfable swell (1★+): Sunday 5 Jul, 12AM (local time) - 10ft (3.0m), 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 Sunday (Jul 05) at 12AM. The primary swell is predicted to be 3.0m and 9s 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 3.0m 9s and forecast to arrive on Sunday (Jul 05) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Monday (Jul 06) at 9PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sun 5th Jul)10ft (3.0m) 9s
Best Surf12AM (Sun 5th Jul)10ft (3.0m) 9s
Most Powerful12AM (Sun 5th Jul)10ft (3.0m) 9s

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


Updates in  hr  min  s Forecast update imminent

Hey, Rusty here. Let’s break down what Ruby Bay has on the table for the next couple of weeks. I’ll be straight: this is a tough one. Ruby Bay is a point break that rarely breaks, and it’s sheltered from the north swells it needs. For the first week and a half, it’s mostly flat or tiny, and when a little pulse shows up, the wind usually kills it. There is exactly one standout window, but it’s a long way off.

Starting now, Friday July 3rd is dead flat with a tiny 3ft swell and a short 5-second period – no juice. The water is 54°, which is pretty normal for this time of year.

Saturday the 4th sees a small bump: 4ft in the morning but with onshore wind, and by the afternoon it’s 6ft with a 12 mph onshore blow. Choppy. Not worth suiting up.

Sunday the 5th morning is glassy with a 4ft north swell at 9 seconds. The combined energy is moderate (215), but the call is “surfable but very ordinary.” Wind goes light offshore in the afternoon, but the swell drops to 3ft and the energy fades (89). A flicker, but not a session.

From Monday the 6th through Thursday the 10th, it’s flat. Zero swell. That’s a 4-day gap of nothing.

Friday the 11th teases a tiny 0.3ft swell with a very long 18-second period – just a ghost. Saturday the 12th and Sunday the 13th are flat again. The whole stretch from the 6th to the 14th is a blank run.

Here’s the one standout. On Wednesday the 15th, we get a pulse. Morning shows 8ft of north swell at 10 seconds, with an offshore breeze at 6 mph from the SSW. The combined energy is massive at 1282. That’s strong. The wave comment says “expect very good surf conditions.” But 8ft is expert-only territory – big for a rare break. The afternoon stays glassy with 7ft and energy of 980.

After that, Thursday the 16th drops back to tiny 2ft, and it’s flat again through the weekend.

So the only call here is Ruby Bay on Wednesday morning, July 15th. North swell at 8ft, clean with offshore wind. This is 12 days out, so it’s promising but not locked in. That session is for experts only, and since the spot rarely breaks, if it comes together it’ll be a rare one. Keep an eye on the crowds – they can show up here sometimes.

For the rest of the run, it’s a long quiet spell. That’s just how this sheltered spot plays.

Rusty.

Short Range Forecast

Heavy rain (total 30mm), heaviest during Sat night. Very mild (max 13°C on Sat afternoon, min 5°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 61mm), heaviest during Tue morning. Very mild (max 14°C on Wed afternoon, min 6°C on Wed night). Wind will be generally light.

Fri
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
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
3
1
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)
0.8
NNW
5
1.3
NNW
6
1.3
N
6
1.7
N
7
3
N
9
1.2
N
9
0.8
N
8
0.5
N
8
0.4
NW
13
0.2
N
7
1.4
SE
4
0.4
NE
7
0.1
N
7
0.2
NNE
6
0.1
N
5
0.1
NW
19
0.1
NW
18
0.1
NW
22
0.1
NW
20
0.1
NW
19
0.1
NW
18
Wave Graph
Metric surfscale
Energy kJ
29
100
108
270
1535
215
89
0
0
4
70
0
1
3
1
0
0
0
0
0
0
Wind (km/h)
5
NE
0
SW
10
N
20
N
0
WSW
5
W
10
WSW
10
SSW
10
SSW
5
E
15
SW
10
SSE
15
SSW
15
SSW
10
SSW
5
SSE
10
SSW
5
SSW
5
SE
10
SSW
5
SSW
Wind State
glassy
glassy
cross-on
cross-on
glassy
glassy
off
off
cross-off
cross-on
off
cross-off
off
off
off
glassy
off
cross-off
glassy
cross-off
off
High Tide
00:20AM3.94m
12:45PM3.70m
00:58AM3.91m
1:26PM3.63m
1:37AM3.85m
2:08PM3.55m
2:20AM3.78m
2:53PM3.49m
3:09AM3.68m
3:42PM3.45m
4:04AM3.59m
4:38PM3.42m
5:08AM3.55m
Low Tide
6:02PM1.00m
6:04AM1.11m
6:36PM1.00m
6:44AM1.12m
7:11PM1.06m
7:27AM1.15m
7:50PM1.17m
8:13AM1.20m
8:36PM1.31m
9:04AM1.26m
9:36PM1.43m
10:03AM1.33m
10:53PM1.46m
11:09AM1.37m
part cloud
part cloud
rain showers
light rain
rain showers
light rain
part cloud
rain showers
light rain
heavy rain
heavy rain
heavy rain
rain showers
rain showers
clear
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:52
7:52
7:52
7:52
7:52
7:52
7:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:08
5:09
5:10
5:10
5:12
5:12
5:13
5:14
 mm
1
5
17
1
4
2
15
15
27
3
1
Temp °C
12
10
12
13
13
11
12
7
9
9
10
10
9
8
12
14
7
11
12
4
9
Feels °C
11
9
8
9
8
8
9
4
5
7
7
8
6
5
10
12
4
9
10
0
7
Swell 1
Height (m)
Direction
Period (s)
0.5
N
5
0.8
N
6
1.2
N
9
0.8
N
8
0.5
N
8
0.3
NNW
8
0.4
NW
16
0.2
NNW
16
0.4
SE
4
0.2
ENE
4
0.2
NNE
6
0.1
N
5
0.1
NW
18
0.1
NW
16
0.1
NW
16
0.1
NW
19
0.1
NW
18
Energy kJ
11
39
215
89
33
11
66
24
6
2
3
1
12
10
10
14
12
Swell 2
Height (m)
Direction
Period (s)
0.1
NW
18
0.1
NW
16
0.2
NNW
12
0.4
NW
13
0.2
N
7
0.1
SW
6
0.4
NE
7
0.1
N
7
0.1
NW
15
0.1
NW
19
0.1
NW
11
0.1
NW
20
0.1
NW
14
Energy kJ
12
10
14
44
4
1
11
1
8
14
5
16
8
Swell 3
Height (m)
Direction
Period (s)
0.1
NW
19
0.1
NW
16
0.1
NW
15
0.1
NW
22
0.1
NW
6
Energy kJ
15
10
9
18
1
Wind waves
Height (m)
Direction
Period (s)
0.8
NNW
5
1.3
NNW
6
1.3
N
6
1.7
N
7
3
N
9
0.3
SSW
2
0.5
SW
3
0.8
S
4
1.4
SE
4
0.6
SSW
4
0.5
SW
3
0.2
SSW
3
0.4
SSW
3
0.4
SSW
3
0.3
SSW
3
0.4
SW
3
0.4
SW
3
Energy kJ
29
100
108
270
1535
1
5
18
70
9
5
1
4
4
1
2
2
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
2
3
1
1
1
7
6
5
4
4
3
3
2
4
4
4
4
4
Distance (km)
14
7
129
133
0
0
30
14
88
88
88
85
83
83
83
83
83
83
83
83
83
Best forecast wave conditions in Nelson - Tasman Bay
Rating
(10 max)
1
1
4
1
1
1
Best forecast wave conditions in New Zealand
Rating
(10 max)
3
3
2
3
4
2
4
5
7
6
9
5
4
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
5
8
5
4
5
5
9
6
7
6
9
7
5
6
9
9
9
6
5
6
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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