Surf Forecasts:
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 Type | Time (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 ForecastHeavy 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 SummaryLight 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 | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 6 | S 10 | ESE 9 | ESE 9 | E 10 | E 11 | ESE 10 | E 10 | ESE 11 | ESE 11 | ESE 10 | ESE 11 | E 10 | E 11 | E 10 | E 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 |
Wave Graph  | |||||||||||||||||||||
 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) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | ||||||||
 |  |  | | |  | |  | | |  |  | |  |  | |  | | | | | |
 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:50 |
 | 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) | E 10 | S 10 | SSW 16 | SSW 15 | E 10 | E 11 | ESE 10 | E 10 | ESE 11 | ESE 11 | ESE 10 | ESE 11 | E 10 | E 11 | E 10 | E 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 |
| 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) | S 17 | E 10 | S 16 | — | SSW 14 | SSW 13 | S 18 | — | S 22 | S 20 | SSW 17 | S 16 | S 16 | S 10 | SSW 9 | S 16 | S 15 | S 15 | S 14 | S 12 | S 10 |
| 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) | — | S 16 | — | — | — | — | — | — | — | — | — | — | — | SSW 15 | SSW 15 | SSW 16 | S 8 | — | — | NE 4 | NE 5 |
| kJ | — | 132 | — | — | — | — | — | — | — | — | — | — | — | 74 | 42 | 146 | 32 | — | — | 7 | 3 |
Wind waves Height (m) Direction Period (s) | SSW 6 | ESE 6 | ESE 9 | ESE 9 | SSE 7 | S 7 | SSW 13 | S 7 | S 9 | SSW 8 | SSW 7 | SSW 6 | SSW 5 | S 7 | S 5 | S 9 | — | NNE 3 | NE 4 | NNE 4 | NNE 5 |
| 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 | |||||||||||||||||||||
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 | |||||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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