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Sumner Bar Surf Forecast
/ Canterbury (28 surf breaks) /
Surf Forecasts:
Sumner Bar surfForecast / Canterbury / New Zealand
48hr Weather and Surf, issued 11 am Thursday 21 May 2026 NZSTForecast update in hr min s Forecast update imminent
Sumner Bar surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sumner Bar sea temperature is
12.6° C
(Which is 1.6°C warmer than normal for this time of year)How big are the waves at Sumner Bar today?
The current surf forecast for Sumner Bar at 4PM is: 0.7m 3s primary swell from a North direction and 0.3m 8s secondary swell from a Northeast direction, 0.3m 6s secondary swell from a East-northeast direction (forecast issued at 11:00am May 21). The wind direction is predicted to be glassy.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 2.5ft (0.8m) | 4s |
| Afternoon (21 May) | 1ft (0.3m) | 8s |
| Evening (21 May) | 1ft (0.3m) | 8s |
Table - waves today at Sumner Bar. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 19°C on Thu afternoon, min 10°C on Thu night). Winds decreasing (fresh winds from the N on Thu morning, calm by Sat morning). | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NNE 4 | NE 8 | NE 8 | NE 8 | NE 8 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 3 | ENE 4 | NE 4 | NE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | E 11 | NE 11 | SSE 16 | SSE 16 | SSE 16 | SSE 16 | |
17 | 17 | 11 | 10 | 10 | 6 | 7 | 3 | 6 | 3 | 8 | 12 | 22 | 7 | 7 | 4 | 4 | 2 | 2 | 5 | 26 | 25 | 48 | 25 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross-on | cross-off | glassy | on | on | cross-on | on | on | on | cross-on | cross | off | off | off | glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 8:16AM2.43m | 8:39PM2.55m | 9:12AM2.39m | 9:36PM2.45m | 10:05AM2.34m | 10:34PM2.35m | ||||||||||||||||||
Low Tide | 2:20PM0.29m | 2:59AM0.34m | 3:17PM0.32m | 3:55AM0.39m | 4:13PM0.38m | 4:50AM0.44m | ||||||||||||||||||
 |  | |  | | | |  |  | | |  | | | | | | | | | | | | | |
 | 7:41 | — | — | — | — | — | — | 7:41 | — | — | — | — | — | — | — | 7:43 | — | — | — | — | — | — | — | 7:43 |
 | — | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | 5:06 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 18 | 19 | 11 | 11 | 10 | 10 | 10 | 10 | 11 | 11 | 10 | 11 | 12 | 11 | 10 | 11 | 13 | 13 | 12 | 12 | 11 | 10 | 10 |
10 | 12 | 16 | 9 | 10 | 7 | 8 | 7 | 6 | 7 | 7 | 7 | 10 | 10 | 9 | 8 | 10 | 11 | 10 | 9 | 10 | 9 | 7 | 8 | |
Swell 1 Height (m) Direction Period (s) | ENE 6 | NE 8 | NE 8 | NE 4 | ENE 5 | ENE 6 | ENE 6 | ENE 6 | — | S 9 | S 13 | S 13 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 5 | ENE 5 | SSE 16 | SSE 16 | SSE 16 | SSE 16 |
 kJ | 3 | 17 | 9 | 5 | 5 | 6 | 7 | 3 | — | 2 | 3 | 3 | 12 | 7 | 7 | 4 | 4 | 2 | 2 | 2 | 26 | 25 | 48 | 25 |
Swell 2 Height (m) Direction Period (s) | E 13 | E 6 | ENE 6 | NE 8 | NE 8 | NE 7 | SE 4 | ESE 4 | S 10 | E 11 | E 11 | E 11 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | E 11 | S 15 | NE 12 | ENE 12 | ESE 3 | ENE 11 |
| kJ | 3 | 3 | 8 | 10 | 10 | 2 | 3 | 1 | 2 | 3 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 17 | 5 | 13 | 1 | 11 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 12 | E 12 | NW 3 | — | — | E 8 | E 8 | E 8 | — | S 9 | — | E 11 | E 11 | E 11 | E 9 | — | — | S 14 | NE 11 | NE 5 | E 5 | ENE 11 | — |
| kJ | 1 | 3 | 3 | 1 | — | — | 1 | 1 | 1 | — | 2 | — | 2 | 2 | 2 | 2 | — | — | 4 | 5 | 1 | 1 | 12 | — |
Wind waves Height (m) Direction Period (s) | NNE 4 | N 4 | N 3 | — | SE 4 | SE 4 | — | — | ENE 6 | ENE 3 | ENE 4 | NE 4 | NE 4 | — | — | — | — | — | — | — | — | ESE 3 | — | E 3 |
| kJ | 17 | 12 | 11 | — | 4 | 3 | — | — | 6 | 3 | 8 | 12 | 22 | — | — | — | — | — | — | — | — | 1 | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 243 | 258 | 40 | 149 | 25 | 25 | 40 | 33 | 33 | 33 | 33 | 33 | 25 | 25 | 25 | 25 | 25 | 33 | 33 | 25 | 25 | 25 | 30 | 30 |
Best forecast wave conditions in Canterbury | ||||||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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