Blue Duck Stream Surf Break

Lat Long: 42.28° S 173.78° E

Issued: 5 pm 06 Jul 2026 (local time)

Forecast update in  hr  min

Today's Blue Duck Stream sea temperature is
11.7° C

Slightly warmer than usual

Blue Duck Stream surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Blue Duck Stream surf forecast from 6 Jul 2026:

  • Best quality surf: Tuesday 7 Jul, 3AM (local time) - 10ft (3.0m), 9s period, E swell with cross-onshore winds.
  • Most powerful swell: Thursday 9 Jul, 3PM (local time) - 13ft (4.0m), 11s period, ESE swell with 3,405 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 7 Jul, 3AM (local time) - 10ft (3.0m), 9s period with E swell.

Best Forecast Surf Conditions for Blue Duck Stream this week:

The surf forecast for Blue Duck Stream over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 07) at 3AM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 2.2m and 9s. Another secondary swell of 1.9m and 9s is also forecast. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Blue Duck Stream in the next 16 days are 4.0m 11s and forecast to arrive on Thursday (Jul 09) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Monday (Jul 13) at 6PM.

Wave TypeTime (NZST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 7th Jul)10ft (3.0m) 9s
Best Surf 3AM (Tue 7th Jul)10ft (3.0m) 9s
Most Powerful 3PM (Thu 9th Jul)13ft (4.0m) 11s

Table - best surf conditions forecast for Blue Duck Stream over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 183mm), heaviest during Tue afternoon. Very mild (max 12°C on Mon night, min 8°C on Mon afternoon). Winds increasing (light winds from the S on Mon night, strong winds from the S by Wed night).

Days 5-7 Weather Summary

Light rain (total 9mm), mostly falling on Thu afternoon. Mild temperatures (max 9°C on Sun morning, min 4°C on Fri night). Winds decreasing (fresh winds from the SSW on Thu afternoon, light winds from the NE by Sun morning).

Mon
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
1
1
0
!
3
3
3
0
!
!
!
!
3
4
3
2
3
2
1
2
1
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)
2
SSW
6
1.8
S
10
3.5
ESE
9
3.5
ESE
9
2.3
E
10
2.5
E
11
2.5
ESE
10
3
E
10
3.5
ESE
11
4
ESE
11
3
ESE
10
3
ESE
11
2.1
E
10
1.9
E
11
1.7
E
10
1.5
E
10
1.4
ESE
10
1.2
ESE
10
1
ESE
9
0.8
ESE
9
0.7
ESE
9
Wave Graph
Metric surfscale
Energy kJ
291
580
1809
1629
1004
1405
1433
1650
2527
3405
1868
1809
988
831
596
459
386
276
185
106
80
Wind (km/h)
30
SW
15
S
25
S
20
SW
25
SW
20
SW
25
SW
35
S
35
S
30
SSW
25
SW
20
SW
15
SW
15
W
10
W
10
SSW
10
NW
10
NNW
10
NE
10
NW
10
NW
Wind State
cross-off
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
off
cross-off
cross
cross-off
cross-off
High Tide
9:33PM1.40m
9:59AM1.32m
10:20PM1.40m
10:48AM1.37m
11:10PM1.41m
11:40AM1.44m
00:03AM1.43m
12:35PM1.52m
00:59AM1.46m
1:31PM1.60m
1:55AM1.50m
2:28PM1.68m
2:53AM1.53m
Low Tide
3:53AM0.26m
4:08PM0.27m
4:37AM0.24m
4:59PM0.26m
5:25AM0.21m
5:53PM0.23m
6:15AM0.17m
6:49PM0.19m
7:09AM0.13m
7:48PM0.14m
8:05AM0.08m
8:47PM0.10m
9:02AM0.03m
mod rain
heavy rain
heavy rain
heavy rain
heavy rain
light rain
heavy rain
mod rain
mod rain
mod rain
rain showers
clear
clear
part cloud
part cloud
clear
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
7:50
7:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:05
5:06
5:06
5:07
5:07
5:07
5:08
5:09
 mm
6
49
38
35
17
2
16
10
10
7
2
Temp °C
8
12
11
8
9
10
10
10
8
7
7
6
7
4
8
8
5
9
10
7
12
Feels °C
2
9
7
4
5
5
4
3
1
0
0
0
2
-1
4
5
1
6
7
3
10
Swell 1
Height (m)
Direction
Period (s)
0.8
E
10
1.8
S
10
0.4
SSW
16
0.4
SSW
15
2.3
E
10
2.5
E
11
2.5
ESE
10
3
E
10
3.5
ESE
11
4
ESE
11
3
ESE
10
3
ESE
11
2.1
E
10
1.9
E
11
1.7
E
10
1.5
E
10
1.4
ESE
10
1.2
ESE
10
1
ESE
9
0.8
ESE
9
0.7
ESE
9
Energy kJ
115
580
83
74
1004
1405
1433
1650
2527
3405
1868
1809
988
831
596
459
386
276
185
106
80
Swell 2
Height (m)
Direction
Period (s)
0.5
S
17
1
E
10
0.5
S
16
0.4
SSW
14
0.4
SSW
13
0.2
S
18
0.1
S
22
0.2
S
20
0.4
SSW
17
0.7
S
16
0.7
S
16
0.5
S
10
0.4
SSW
9
0.5
S
16
0.5
S
15
0.6
S
15
0.6
S
14
0.6
S
12
0.5
S
10
Energy kJ
151
186
124
67
60
25
9
30
100
242
236
51
28
132
121
157
138
103
47
Swell 3
Height (m)
Direction
Period (s)
0.5
S
16
0.4
SSW
15
0.3
SSW
15
0.5
SSW
16
0.5
S
8
0.4
NE
4
0.3
NE
5
Energy kJ
132
74
42
146
32
7
3
Wind waves
Height (m)
Direction
Period (s)
2
SSW
6
1.3
ESE
6
3.5
ESE
9
3.5
ESE
9
1.6
SSE
7
1.2
S
7
0.3
SSW
13
2.5
S
7
3.5
S
9
2.3
SSW
8
1.8
SSW
7
1.9
SSW
6
1
SSW
5
1.2
S
7
0.7
S
5
0.6
S
9
0.4
NNE
3
0.6
NE
4
0.9
NNE
4
0.7
NNE
5
Energy kJ
291
125
1809
1629
259
130
35
730
1655
671
328
284
45
124
28
54
3
8
24
25
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
4
4
4
4
4
4
4
4
4
4
4
3
3
3
2
2
2
1
Distance (km)
160
121
121
23
34
23
34
174
191
187
77
23
20
0
0
4
0
0
10
0
0
Best forecast wave conditions in Kaikoura and Marlborough
Rating
(10 max)
4
4
4
4
4
4
4
3
3
3
2
2
2
1
Best forecast wave conditions in New Zealand
Rating
(10 max)
4
5
4
4
4
4
4
4
6
7
4
5
4
5
5
4
4
4
4
3
3
Header Global
Rating
(10 max)
7
8
7
5
5
9
8
9
8
7
5
6
5
8
5
5
5
5
5
9
8
  • 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
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Blue Duck Stream:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Blue Duck Stream surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Information about the Blue Duck Stream Surf forecast

The above surf forecast table for Blue Duck Stream provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Blue Duck Stream can be found by selecting the local surf guide option on the grey menu. Our Blue Duck Stream 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 (Blue Duck Stream) 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 Blue Duck Stream 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.

Blue Duck Stream is 86 km (53 miles) from the city of Blenheim. If you plan a holiday in Kaikoura and Marlborough, look for hotels and other accommodation in Blenheim. Blenheim has rooms for a wide range of budgets as well as car hire and transport links.

Nearest locationNearest