Surf Forecasts:
Blue Duck Stream surf forecast from 7 Aug 2026:
- Best quality surf: Saturday 8 Aug, 12AM (local time) - 4.5ft (1.3m), 12s period, S swell with offshore winds.
- Most powerful swell: Saturday 8 Aug, 3AM (local time) - 4.5ft (1.4m), 11s period, S swell with 485 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 12AM (local time) - 4.5ft (1.3m), 12s period with S 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 Saturday (Aug 08) at 12AM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 0.8m and 11s. 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 1.4m 11s and forecast to arrive on Saturday (Aug 08) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Sunday (Aug 09) at 12AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sat 8th Aug) | 4.5ft (1.3m) 12s |
| Best Surf | 12AM (Sat 8th Aug) | 4.5ft (1.3m) 12s |
| Most Powerful | 3AM (Sat 8th Aug) | 4.5ft (1.4m) 11s |
Table - best surf conditions forecast for Blue Duck Stream over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Fri night. Very mild (max 14°C on Sun morning, min 8°C on Fri afternoon). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Wed morning, min 9°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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) | S 13 | S 12 | S 11 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | S 9 | SSE 8 | SE 12 | SE 11 | NE 5 | NE 6 | E 7 | ENE 8 | ENE 8 | ENE 7 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 715 | 446 | 389 | 302 | 300 | 173 | 169 | 140 | 126 | 230 | 257 | 199 | 123 | 49 | 79 | 74 | 128 | 77 | 41 | 58 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | glassy | cross-on | cross-off | cross-off | glassy | off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | off | glassy | glassy | glassy |
High Tide | 11:46PM1.44m | 12:18PM1.57m | 00:42AM1.46m | 1:15PM1.63m | 1:39AM1.50m | 2:12PM1.69m | 2:36AM1.53m | 3:08PM1.73m | 3:32AM1.55m | 4:04PM1.75m | 4:28AM1.57m | 4:59PM1.74m | ||||||||
Low Tide | 5:38PM0.20m | 5:56AM0.15m | 6:35PM0.17m | 6:52AM0.11m | 7:33PM0.14m | 7:48AM0.07m | 8:31PM0.10m | 8:46AM0.03m | 9:29PM0.07m | 9:43AM-0.01m | 10:25PM0.04m | 10:40AM-0.02m | 11:20PM0.03m | |||||||
 |  |  | |  | | | | |  |  | | | | | |  | | | | |
 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — |
 | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 11 | 12 | 11 | 10 | 14 | 14 | 12 | 13 | 13 | 10 | 13 | 14 | 13 | 16 | 16 | 14 | 15 | 16 | 14 |
Feels °C | 9 | 8 | 10 | 9 | 8 | 12 | 13 | 8 | 9 | 7 | 7 | 9 | 10 | 10 | 15 | 14 | 13 | 14 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | S 11 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SE 12 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SE 7 | E 7 | ENE 8 | ENE 8 | ENE 7 | E 8 |
| kJ | 715 | 446 | 389 | 302 | 300 | 173 | 169 | 140 | 126 | 52 | 257 | 133 | 59 | 34 | 17 | 74 | 128 | 77 | 41 | 58 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 11 | SSE 14 | SE 11 | NNE 5 | S 13 | E 6 | NE 5 | SSW 5 | S 15 | SE 12 | SE 12 | SE 11 | SSE 11 | SE 10 | SSE 11 | SSE 10 | SSE 9 | SE 13 | SE 12 |
| kJ | 380 | 174 | 70 | 31 | 26 | 90 | 22 | 7 | 7 | 17 | 175 | 199 | 123 | 46 | 25 | 23 | 19 | 17 | 25 | 38 |
Swell 3 Height (m) Direction Period (s) | NNE 5 | S 15 | SE 12 | S 17 | S 17 | E 14 | NNE 6 | E 6 | NE 4 | SE 15 | S 14 | S 14 | S 19 | S 17 | S 12 | SE 14 | ESE 14 | SE 14 | E 8 | S 18 |
| kJ | 15 | 118 | 39 | 6 | 22 | 4 | 23 | 3 | 1 | 8 | 16 | 4 | 7 | 6 | 11 | 8 | 19 | 29 | 12 | 24 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NNE 6 | NE 6 | WSW 3 | — | SSW 5 | S 9 | — | — | NE 4 | NE 5 | NE 6 | NNE 6 | N 6 | — | NNE 6 | NE 5 |
| kJ | — | — | — | — | 143 | 80 | 7 | — | 23 | 230 | — | — | 15 | 49 | 79 | 53 | 77 | — | 24 | 22 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 156 | 0 | 0 | 101 | 0 | 0 | 34 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Kaikoura and Marlborough | ||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
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