Surf Forecasts:
Blue Duck Stream surf forecast from 23 Aug 2026:
- Best quality surf: Monday 24 Aug, 6AM (local time) - 6.5ft (2.0m), 13s period, S swell with offshore winds.
- Most powerful swell: Monday 24 Aug, 6AM (local time) - 6.5ft (2.0m), 13s period, S swell with 1,336 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 12AM (local time) - 1.5ft (0.4m), 9s period with SSW 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 Monday (Aug 24) at 12AM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.3m and 12s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Blue Duck Stream in the next 16 days are 2.0m 13s and forecast to arrive on Monday (Aug 24) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Sunday (Aug 30) at 3PM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 24th Aug) | 1.5ft (0.4m) 9s |
| Best Surf | 6AM (Mon 24th Aug) | 6.5ft (2.0m) 13s |
| Most Powerful | 6AM (Mon 24th Aug) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Blue Duck Stream over the next 16 days.
Short Range ForecastLight rain (total 3mm), mostly falling on Sun morning. Very mild (max 17°C on Tue morning, min 9°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Very mild (max 17°C on Wed afternoon, min 9°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSE 10 | ESE 13 | SSW 9 | SSW 13 | S 13 | S 12 | S 10 | S 15 | SSW 15 | SSW 15 | SSW 14 | S 15 | S 17 | S 16 | S 14 | S 13 | S 12 | S 11 | S 10 | S 10 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 34 | 31 | 1308 | 683 | 389 | 167 | 159 | 240 | 284 | 201 | 224 | 1133 | 1290 | 691 | 392 | 287 | 237 | 133 | 122 | 80 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | glassy | off | off | off | off | glassy | glassy | off | glassy | cross-off | cross | cross-off | on | off | cross-off | cross-on | off |
High Tide | 1:11PM1.42m | 1:30AM1.31m | 1:56PM1.43m | 2:14AM1.31m | 2:40PM1.44m | 2:58AM1.32m | 3:24PM1.46m | 3:41AM1.33m | 4:07PM1.47m | 4:25AM1.35m | 4:50PM1.47m | 5:09AM1.37m | 5:34PM1.47m | ||||||||
Low Tide | 7:25PM0.35m | 7:34AM0.32m | 8:11PM0.34m | 8:18AM0.30m | 8:55PM0.32m | 9:02AM0.27m | 9:39PM0.30m | 9:47AM0.25m | 10:23PM0.27m | 10:32AM0.22m | 11:07PM0.25m | 11:18AM0.21m | 11:51PM0.23m | ||||||||
 |  |  | | |  |  | | | | |  | | |  | | | | | | | |
 | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — |
 | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — |
mm | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | — | — | — |
Temp °C | 14 | 13 | 9 | 15 | 16 | 13 | 17 | 17 | 14 | 16 | 17 | 16 | 13 | 17 | 15 | 17 | 17 | 15 | 12 | 12 | 11 |
Feels °C | 9 | 6 | 4 | 13 | 14 | 10 | 14 | 13 | 11 | 14 | 15 | 14 | 13 | 15 | 12 | 15 | 15 | 13 | 9 | 8 | 8 |
Swell 1 Height (m) Direction Period (s) | NNE 9 | NE 6 | SSW 9 | SSW 13 | S 13 | S 12 | S 10 | S 10 | SSW 15 | SSW 15 | SSW 14 | S 11 | S 17 | S 16 | S 14 | S 13 | S 12 | S 11 | S 10 | S 10 | S 9 |
| kJ | 121 | 9 | 31 | 1308 | 683 | 389 | 167 | 90 | 240 | 284 | 201 | 151 | 1133 | 1290 | 691 | 392 | 287 | 237 | 133 | 122 | 80 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | ESE 13 | E 12 | ESE 13 | E 14 | ESE 14 | S 15 | S 15 | SSW 9 | ESE 14 | SSE 4 | S 15 | E 13 | ESE 12 | SE 12 | SE 12 | NNE 6 | ENE 6 | SE 13 | SE 13 | ENE 5 |
| kJ | 30 | 34 | 26 | 33 | 35 | 40 | 121 | 159 | 26 | 37 | 3 | 224 | 28 | 13 | 5 | 5 | 28 | 15 | 44 | 60 | 23 |
Swell 3 Height (m) Direction Period (s) | ESE 13 | SSE 9 | S 17 | — | — | NNE 4 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | ESE 11 | E 17 | SE 16 | ENE 6 | SE 14 | ENE 6 | E 7 | SE 12 |
| kJ | 34 | 16 | 22 | — | — | 2 | 37 | 36 | 38 | 36 | 17 | 16 | 16 | 12 | 5 | 10 | 10 | 32 | 8 | 1 | 54 |
Wind waves Height (m) Direction Period (s) | N 8 | SW 5 | WSW 6 | — | NNE 4 | — | W 3 | NNE 5 | W 3 | — | NE 4 | — | — | ENE 12 | NNE 7 | NNE 7 | — | S 3 | SE 4 | E 4 | N 4 |
| kJ | 587 | 29 | 50 | — | 14 | — | 2 | 10 | 2 | — | 1 | — | — | 26 | 223 | 120 | — | 1 | 5 | 7 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 34 | 0 | 15 | 0 | 0 | 133 | 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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