Blue Duck Stream Surf Forecast

/ Kaikoura and Marlborough (12 surf breaks) /

New Zealand (466 surf breaks) / Lat Long: (42.28° S 173.78° E)

Surf Forecasts:

Blue Duck Stream surfForecast / Kaikoura and Marlborough / New Zealand

12 Day Weather and Surf, issued 12 pm Tuesday 07 Oct 2025 NZDT

Forecast update in hr min s Forecast update imminent

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

Today's Blue Duck Stream sea temperature is 11.3° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Blue Duck Stream this week:

The surf forecast for Blue Duck Stream over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Oct 07) at 4PM. The primary swell is predicted to be 0.9m and 5s period with a secondary swell of 0.2m and 10s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Blue Duck Stream in the next 12 days are 0.9m 15s and forecast to arrive on Wednesday (Oct 08) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Saturday (Oct 11) at 7AM.

Wave Type	Time (NZDT) & Date	Wave Height & Period
Next good surf (1 star+)	4PM (Tue 7th Oct)	3ft (0.9m) 5s
Best Surf	4AM (Wed 8th Oct)	2.5ft (0.7m) 16s
Most Powerful	7AM (Wed 8th Oct)	3ft (0.9m) 15s

Table - best surf conditions forecast for Blue Duck Stream over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Light rain (total 5mm), mostly falling on Tue morning. Warm (max 20°C on Thu morning, min 9°C on Tue night). Wind will be generally light.									Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Sat afternoon, min 12°C on Sun night). Wind will be generally light.
	Tuesday 07			Wednesday 08			Thursday 09			Friday 10			Saturday 11			Sunday 12			Monday 13
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	1	1	2	2	1	1	1	1	0	1	1	1	1	0	0	1	1	1	1	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	S	SSE	S	SSW	SSW	S	SSW	NE	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	S
Period(s) (?)	6	5	16	15	14	13	15	8	15	15	16	16	16	16	15	15	6	15	15	14	11
Wave Graph (?)
kJ (?)	144	49	131	292	215	126	77	53	44	21	50	53	50	47	21	22	45	45	75	68	64
Wind (km/h)	S	E	NW	NW	ENE	WNW	NNE	WSW	NNW	NW	W	NW	NNE	NNE	NW	W	WNW	NNE	N	SW	NE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	glass	cross- off	glass	glass	off	glass	glass	cross- off	cross- off	off	cross- off	glass	glass	cross- off	cross- off	off	glass	glass	cross- off	glass
High Tide / height (m)		5:28PM 1.59		5:55AM 1.61	6:22PM 1.61		6:50AM 1.67		7:18PM 1.60	7:47AM 1.71		8:16PM 1.59	8:45AM 1.73		9:15PM 1.57	9:45AM 1.73		10:14PM 1.54	10:45AM 1.71		11:14PM 1.52
Low Tide / height (m)	11:14AM 0.06		11:42PM 0.05	12:11PM 0.02		12:36AM 0.02		1:10PM 0.01	1:32AM 0.01		2:09PM 0.01	2:29AM 0.01		3:09PM 0.02	3:27AM 0.03		4:09PM 0.04		4:26AM 0.05	5:08PM 0.07

	Tuesday 07			Wednesday 08			Thursday 09			Friday 10			Saturday 11			Sunday 12			Monday 13
Sunrise	6:48	-	-	6:48	-	-	6:46	-	-	6:43	-	-	6:43	-	-	6:41	-	-	6:39	-	-
Sunset	-	7:36	-	-	7:37	-	-	7:38	-	-	7:39	-	-	7:40	-	-	7:42	-	-	7:43	-

Rain (mm)	3	2	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	-
Temp. °C	13	10	10	16	17	14	20	20	19	22	21	18	23	24	18	21	20	16	15	14	9
Feels °C (?)	9	8	6	13	15	11	18	19	17	20	20	16	22	22	14	18	16	14	13	10	7

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Kaikoura and Marlborough

Wind Update Still cross-shore at Blue Duck Stream (light winds from the NNE at KaikouraAws 17 km from Blue Duck Stream). 1.1m 5s windswell from the SSE with a 0.8m 5s windswell, also from the SSE and a 0.3m 10s swell, also from the E. 3 swells combining to make bigger set waves.
1 hour 29 minutes ago Blue Duck Stream

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17 km away, 1 h 29 min ago

13 km/h

NNE

0.0

11.3

Air / Water (°C)

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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 12 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.