Ruby Bay surf break

Ruby Bay surfForecast / Nelson – Tasman Bay / New Zealand

information circle12 Day Weather and Surf, issued 6 am Wednesday 10 Dec 2025 NZDT
Forecast update in hr  min  s Forecast update imminent
Ruby Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ruby Bay sea temperature is
19.6° C
(Which is 4.3°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Ruby Bay this week:

The surf forecast for Ruby Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Dec 16) at 7PM. The primary swell is predicted to be 2.1m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Ruby Bay in the next 12 days are 2.1m 8s and forecast to arrive on Tuesday (Dec 16) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Monday (Dec 15) at 7PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Tue 16th Dec)7ft (2.1m) 8s
Best Surf 7PM (Tue 16th Dec)7ft (2.1m) 8s
Most Powerful 7PM (Tue 16th Dec)7ft (2.1m) 8s

Table - best surf conditions forecast for Ruby Bay over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 24°C on Wed morning, min 10°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 22°C on Mon morning, min 11°C on Sat night). Wind will be generally light.

Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
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
Wave Height (m) & direction (?)
0.1
N
0.8
NW
0.1
N
0.1
NE
0.6
N
0.1
N
0.2
N
0.2
N
0.2
N
0.2
N
0.2
N
0.2
N
0.2
N
0.3
NNE
1.1
NNW
0.6
N
1.4
N
1.2
N
1.4
N
2.1
N
1.2
N
Period(s) (?)13513431616161515151414145566678
Wave
Graph
(?)Metric surfscale
Energy kJ (?)335317520191917171616376618123120153449181
Wind
(km/h)
5
W
5
NE
5
SSW
5
NNE
15
NE
15
WSW
5
SSW
20
NE
0
N
10
NE
10
NNE
5
SSW
5
NE
15
NE
0
NW
5
NNE
25
N
15
N
25
N
25
N
10
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassonglassononoffglassonglassononglassglassonglassoncross-
on
cross-
on
cross-
on
cross-
on
cross-
off
High Tide
/ height (m)
2:55PM
3.86
3:32AM
3.60
3:48PM
3.66
4:26AM
3.49
4:47PM
3.50
5:18AM
3.40
5:50PM
3.42
6:11AM
3.34
6:50PM
3.41
7:09AM
3.34
7:45PM
3.44
8:11AM
3.40
8:33PM
3.47
Low Tide
/ height (m)
9:02PM
1.17
9:16AM
1.28
9:59PM
1.32
10:07AM
1.43
11:00PM
1.45
11:09AM
1.54
12:02AM
1.52
12:20PM
1.58
1:00AM
1.53
1:23PM
1.55
1:50AM
1.49
2:16PM
1.50
2:34AM
1.43
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Sunrise5:48--5:48--5:48--5:48--5:48--5:48--5:48--
Sunset-8:52--8:52--8:52--8:53--8:54--8:55--8:55-
part cloud
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
light rain
heavy rain
part cloud
Rain (mm)
------------------112-
Temp. °C242418191914191814171814181916222218191814
Feels °C (?)232318171710151413151613161917181817161612
  • 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 12 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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