Sumner Bar 48 hour detailed Surf Forecast

Lat Long: 43.56° S 172.76° E

Issued: 6 pm 17 Oct 2026 (local time)

Forecast update in hr min

Today's Sumner Bar sea temperature is

13.9°C

Sumner Bar surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Sumner Bar today (18 Oct):

Morning surf: Morning surf (18 Oct, local time) - 0.5ft (0.2m), 16s period with SSE swell.
Afternoon surf: Afternoon surf (18 Oct, local time) - 1.5ft (0.4m), 16s period with SE swell.
Evening surf: Evening surf (18 Oct, local time) - 1.5ft (0.4m), 16s period with SE swell.

The current surf forecast for Sumner Bar at 12AM is: 0.5m 8s primary swell from a Southeast direction and 0.2m 15s secondary swell from a South-southeast direction (forecast issued at 06:00pm October 17). The wind direction is predicted to be glassy.

Time (NZDT) & Date	Wave Height	Wave Period
Morning (18 Oct)	0.5ft (0.2m)	16s
Afternoon (18 Oct)	1.5ft (0.4m)	16s
Evening (18 Oct)	1.5ft (0.4m)	16s

Table - waves today at Sumner Bar. (Swell directed towards the surf break)

	Short Range Forecast Mostly dry. Very mild (max 17°C on Mon morning, min 7°C on Sat night). Wind will be generally light.
	Sat 17			Sunday 18								Monday 19
	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM
Rating (10 max)	2	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SSE 8	SE 8	SE 8	ESE 8	SSE 15	SSE 15	SSE 16	SSE 16	SE 16	SE 16	SSE 16	SSE 16	SSE 15	SSE 15	SSE 15	SSE 15	SSE 15	SSE 16	SSE 16
Wave Graph
kJ	392	37	28	23	22	23	24	50	66	67	51	49	47	44	42	42	45	48	24
Wind (km/h)	SW	NW	WNW	WSW	W	W	NNE	NE	ENE	ENE	E	E	WSW	SW	W	ENE	E	E	ESE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	off	glassy	glassy	glassy	cross-off	glassy	glassy	on	on	cross-on	cross-on	cross-on	glassy	off	cross-off	on	cross-on	cross-on	cross-on
High Tide				10:37PM2.04m				10:49AM2.10m				11:21PM2.00m				11:37AM2.06m
Low Tide		4:22PM0.76m				4:33AM0.80m				5:10PM0.77m				5:20AM0.80m				5:58PM0.76m


	—	—	—	—	6:33	—	—	—	—	—	—	—	6:31	—	—	—	—	—	—
	—	7:53	—	—	—	—	—	—	—	7:54	—	—	—	—	—	—	—	7:55	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	12	11	8	7	7	8	11	15	15	12	12	12	12	12	15	17	14	13	11
Feels °C	9	10	6	5	4	6	9	12	11	8	8	8	10	9	13	13	10	10	8
Swell 1 Height (m) Direction Period (s)	ESE 8	SE 8	SE 8	ESE 8	SE 7	ESE 7	ESE 7	SSE 16	SE 16	SE 16	SSE 16	SSE 16	NE 4	SSE 15	SSE 15	SSE 15	SSE 15	SSE 16	SSE 16
kJ	41	37	28	22	14	11	11	50	66	67	51	49	2	44	42	42	45	48	24
Swell 2 Height (m) Direction Period (s)	SE 15	SSE 15	SSE 15	SSE 15	SSE 15	SSE 15	SSE 16	ESE 7	E 7	E 7	E 7	E 7	SSE 15	NE 4	ENE 4	NE 6	E 11	—	SE 7
kJ	8	22	23	23	22	23	24	11	4	1	1	1	47	2	1	11	2	—	2
Swell 3 Height (m) Direction Period (s)	E 11	NE 9	—	S 9	SSE 8	SSE 8	SSE 9	E 10	E 10	E 10	NE 12	E 12	E 8	E 7	E 7	E 7	—	—	NE 5
kJ	2	3	—	2	6	6	7	2	2	2	5	3	1	1	1	1	—	—	1
Wind waves Height (m) Direction Period (s)	SSE 8	—	—	—	—	—	—	—	—	NE 3	NE 3	NE 4	—	—	—	ENE 5	NE 6	NE 3	NE 3
kJ	392	—	—	—	—	—	—	—	—	1	3	4	—	—	—	5	8	2	2
Nearest Offshore or Glassy	South Shore Canterbury	South Shore Canterbury	South Shore Canterbury	South Shore Canterbury	South Shore Canterbury	South Shore Canterbury	South Shore Canterbury	Banks Peninsula - Te Oka Bay Canterbury	Banks Peninsula - Te Oka Bay Canterbury	Banks Peninsula - Te Oka Bay Canterbury	Banks Peninsula - Te Oka Bay Canterbury	Kairaki Beach Canterbury	South Shore Canterbury	South Shore Canterbury	South Shore Canterbury	Banks Peninsula - Te Oka Bay Canterbury	Banks Peninsula - Magnet Bay Canterbury	Banks Peninsula - Magnet Bay Canterbury	Banks Peninsula - Raupo Bay Canterbury
Rating (10 max)	2	1	1	1	1	1	1	3	4	4	4	1	1	1	1	4	4	4	3
Distance (km)	0	0	0	0	0	0	0	33	33	33	33	19	0	0	0	33	35	35	25
Best forecast wave conditions in Canterbury	Banks Peninsula - Stony Bay	Banks Peninsula - Stony Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Te Oka Bay	Banks Peninsula - Te Oka Bay	Banks Peninsula - Magnet Bay	Banks Peninsula - Hickory Bay	Banks Peninsula - Magnet Bay	Banks Peninsula - Stony Bay
Rating (10 max)	3	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	3
Best forecast wave conditions in New Zealand	Papatowai Catlins	Papatowai Catlins	Dunedin - Bobs Beach Otago	Dunedin - Bobs Beach Otago	Papatowai Catlins	Papatowai Catlins	Papatowai Catlins	Otago Peninsula - Papanui Beach Otago	Dunedin - Bobs Beach Otago	Dunedin - Bobs Beach Otago	Dunedin - Bobs Beach Otago	Diners Beach Gisborne and Mahia	Diners Beach Gisborne and Mahia	Diners Beach Gisborne and Mahia	Otago Peninsula - Papanui Beach Otago	Papatowai Catlins	Kaka Point Catlins	Otago Peninsula - Papanui Beach Otago	Little Wanganui West Coast South Island
Rating (10 max)	4	4	5	5	4	5	5	4	6	7	7	4	4	4	4	9	4	4	3
Header Global	Afife Portugal	Kaka Point New Zealand	Rio Nexpa Mexico	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Papatowai New Zealand	Papatowai New Zealand	Nugget Point New Zealand	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Ahijedero Mexico	Ahijedero Mexico	Ahijedero Mexico	Ahijedero Mexico	Papatowai New Zealand	Ahijedero Mexico	Ahijedero Mexico	Lebu Chile
Rating (10 max)	4	5	6	5	5	5	5	5	6	7	7	4	4	4	4	9	4	4	5

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

Ben Mondy

Six Sun-Soaked Summer Surf Spots: Backed by 20 years of Swell and Wind Stats (and with our 20% Summer Subscription Sale)

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 Sumner Bar 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.

Sumner Bar 48 hour detailed Surf Forecast

How big are the waves at Sumner Bar today (18 Oct):

Short Range Forecast

Latest Updates

Surf-Forecast Now Has Webcams

Road Testing the new Db Surf Roller Pro

Summer's Short. Life Is Long.

Roadsurfing in the Basque country

Six Sun-Soaked Summer Surf Spots: Backed by 20 years of Swell and Wind Stats (and with our 20% Summer Subscription Sale)

FREE! Surf-Forecast.com widget for your website