Sumner Bar 48 hour detailed Surf Forecast

Lat Long: 43.56° S 172.76° E

Issued: 11 am 19 Sep 2026 (local time)

Forecast update in hr min

Today's Sumner Bar sea temperature is

11.6°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 (19 Sep):

Morning surf: Morning surf (19 Sep, local time) - 1.5ft (0.4m), 12s period with ESE swell.
Afternoon surf: Afternoon surf (19 Sep, local time) - 1.5ft (0.4m), 11s period with ESE swell.
Evening surf: Evening surf (19 Sep, local time) - 3ft (0.9m), 4s period with NNW swell.

The current surf forecast for Sumner Bar at 8PM is: 0.3m 11s primary swell from a East-southeast direction and 0.2m 5s secondary swell from a East-northeast direction, 0.9m 4s secondary swell from a North-northwest direction (forecast issued at 11:00am September 19). The wind direction is predicted to be cross-shore.

Time (NZST) & Date	Wave Height	Wave Period
Morning (19 Sep)	1.5ft (0.4m)	12s
Afternoon (19 Sep)	1.5ft (0.4m)	11s
Evening (19 Sep)	3ft (0.9m)	4s

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

	Short Range Forecast Light rain (total 6mm), mostly falling on Sat night. Very mild (max 16°C on Sat morning, min 6°C on Sat night). Mainly fresh winds.
	Sat 19					Sunday 20								Monday 21
	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	1	1	1	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	ESE 12	ESE 12	ESE 11	ESE 11	NNW 4	ESE 11	ESE 11	ESE 11	SSE 11	E 11	E 11	SSE 15	SSE 14	SE 13	SE 7	SSE 16	SSE 16	SSE 14	SSE 13	SE 12	SSE 12
Wave Graph
kJ	47	44	42	41	24	25	25	24	48	21	9	201	183	83	17	26	24	18	17	36	13
Wind (km/h)	NNW	NW	NW	NW	NNW	W	WSW	WSW	SW	SW	SSW	SW	W	NE	NE	NE	NNE	ENE	ENE	E	WNW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross	cross	cross	cross	cross	cross-off	off	off	off	off	off	off	glassy	glassy	on	on	on	on	on	cross-on	cross-off
High Tide		10:30AM2.17m				10:58PM2.06m				11:18AM2.12m				11:44PM2.02m					12:09PM2.10m
Low Tide				4:51PM0.79m				5:02AM0.80m				5:41PM0.80m				5:48AM0.79m					6:29PM0.77m


	6:24	—	—	—	—	—	—	6:22	—	—	—	—	—	—	—	6:20	—	—	—	—	—
	—	—	—	6:21	—	—	—	—	—	—	—	6:22	—	—	—	—	—	—	—	6:23	—
mm	—	—	—	—	—	—	3	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	11	16	16	14	13	11	8	6	9	11	11	9	7	7	8	8	8	10	12	11	11
Feels °C	7	12	11	8	8	8	2	0	3	3	5	6	5	5	3	3	5	8	9	9	9
Swell 1 Height (m) Direction Period (s)	ESE 12	ESE 12	ESE 11	ESE 11	ESE 11	ESE 11	ESE 11	SSE 8	SSE 11	E 11	E 11	SSE 15	SSE 14	SE 13	SE 7	SE 7	SE 8	SE 8	SE 8	NE 4	NE 4
kJ	47	44	42	41	24	25	25	13	48	21	9	201	183	83	17	14	9	10	11	4	5
Swell 2 Height (m) Direction Period (s)	ENE 4	NE 5	ENE 5	ENE 5	ENE 5	NE 5	N 4	ESE 11	ESE 11	SE 5	—	E 11	E 11	SSE 17	S 13	SSE 16	SSE 16	SSE 14	SSE 13	SE 12	SSE 12
kJ	8	6	6	3	3	1	2	24	24	1	—	9	9	29	13	26	24	18	17	36	13
Swell 3 Height (m) Direction Period (s)	SSE 15	S 15	S 14	S 14	S 12	NE 7	ENE 6	NE 6	S 16	NE 11	—	—	NE 11	E 11	ESE 11	ESE 11	ESE 10	E 10	E 10	E 10	ENE 6
kJ	22	17	4	4	3	2	4	2	5	5	—	—	5	9	11	11	10	2	8	2	4
Wind waves Height (m) Direction Period (s)	NW 3	NNW 3	NW 3	NNW 4	NNW 4	NNW 4	SW 3	SW 3	SW 3	S 13	S 15	S 3	—	—	—	NNE 3	NNE 4	NE 4	NE 4	NNE 4	NNW 3
kJ	2	12	12	16	24	11	4	8	6	255	440	5	—	—	—	7	9	5	4	11	2
Nearest Offshore or Glassy	South Shore Canterbury	South Shore Canterbury	South Shore Canterbury	South Shore Canterbury	Banks Peninsula - Te Oka Bay Canterbury	Waikuku Beach Canterbury	Banks Peninsula - Raupo Bay Canterbury	Waikuku Beach Canterbury	Scarborough Canterbury	Mana Island Wellington	Kaituna Cut Bay of Plenty	South Shore Canterbury	South Shore Canterbury	South Shore Canterbury	Banks Peninsula - Te Oka Bay Canterbury	Banks Peninsula - Magnet Bay Canterbury	Kairaki Beach Canterbury	Banks Peninsula - Te Oka Bay Canterbury	Banks Peninsula - Te Oka Bay Canterbury	Waikuku Beach Canterbury	Banks Peninsula - Raupo Bay Canterbury
Rating (10 max)	1	1	1	1	2	1	2	1	1	2	1	2	1	1	4	4	1	3	3	1	2
Distance (km)	0	0	0	0	33	30	25	30	2	321	716	0	0	0	33	35	19	33	33	30	25
Best forecast wave conditions in Canterbury	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay	Gore Bay	Banks Peninsula - Raupo Bay	Port Robinson	Port Robinson			Fields	Port Robinson	Fields	Banks Peninsula - Magnet Bay	Banks Peninsula - Hickory Bay	Banks Peninsula - Hickory Bay	Banks Peninsula - Magnet Bay	Banks Peninsula - Hickory Bay	Banks Peninsula - Gough Bay	Banks Peninsula - Gough Bay
Rating (10 max)	3	3	3	2	2	1	2	3	4			9	4	4	4	4	3	4	3	3	2
Best forecast wave conditions in New Zealand	Little Wanganui West Coast South Island	Catlins River Mouth Catlins	Shingles West Coast South Island	Makorori Centre Gisborne and Mahia	Makorori Centre Gisborne and Mahia	Mangamaunu Kaikoura and Marlborough	Makorori Centre Gisborne and Mahia	Port Robinson Canterbury	Clarence River Kaikoura and Marlborough	Mana Island Wellington	Maraenui East Cape	Fields Canterbury	Papatowai Catlins	Papatowai Catlins	Waiwakaiho Taranaki	Little Wanganui West Coast South Island	Shingles West Coast South Island	Blaketown Wedge West Coast South Island	Shingles West Coast South Island	Little Wanganui West Coast South Island	Little Wanganui West Coast South Island
Rating (10 max)	4	4	5	2	2	2	2	3	4	2	1	9	9	9	5	5	5	4	4	4	4
Header Global	El Huerto Spain	Cathedral Rock Australia	Shingles New Zealand	Afife Portugal	Kaifu Rivermouth Japan	Trial Harbour Australia	Trial Harbour Australia	Easter Reef Australia	Asu Indonesia	Noises Australia	Asu Indonesia	Dunedin - Bobs Beach New Zealand	Papatowai New Zealand	Papatowai New Zealand	Shipwrecks Bay-Peaks New Zealand	Shipwrecks Bay-Peaks New Zealand	Shipwreck Bay-Supertubes New Zealand	Cyclops Australia	Cyclops Australia	Shipwrecks Bay-Peaks New Zealand	Ahijedero Mexico
Rating (10 max)	5	5	5	4	5	8	8	5	4	5	4	5	9	9	7	8	8	5	5	5	4

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

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Sumner Bar 48 hour detailed Surf Forecast

How big are the waves at Sumner Bar today (19 Sep):

Short Range Forecast

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