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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 5 pm Wednesday 20 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 12AM is: 0.4m 8s primary swell from a Northeast direction and 0.1m 13s secondary swell from a East direction, 0.7m 3s secondary swell from a North direction (forecast issued at 05:00pm May 20). The wind direction is predicted to be cross-onshore.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 2.5ft (0.8m) | 4s |
| Afternoon (21 May) | 2.5ft (0.8m) | 3s |
| 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 18°C on Thu afternoon, min 10°C on Wed afternoon). Winds decreasing (fresh winds from the NNW on Wed night, calm by Sat morning). | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 9 AM | 12 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 9 | NE 5 | NE 5 | NE 8 | N 4 | N 4 | NNE 4 | NE 8 | NNE 3 | NE 8 | NE 8 | NE 7 | NE 6 | ENE 6 | NE 6 | NE 3 | NE 4 | NE 4 | NE 4 | ENE 4 | NE 4 | ENE 4 | ENE 4 | E 12 | |
7 | 7 | 7 | 16 | 30 | 31 | 16 | 17 | 13 | 10 | 10 | 9 | 10 | 7 | 8 | 4 | 10 | 12 | 7 | 6 | 4 | 3 | 3 | 3 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | glassy | glassy | on | on | on | on | cross-on | cross-on | cross | off | off | off | glassy | on | |
High Tide | 7:42PM2.64m | 8:16AM2.43m | 8:39PM2.55m | 9:12AM2.39m | 9:36PM2.45m | 10:05AM2.34m | ||||||||||||||||||
Low Tide | 1:23PM0.28m | 2:03AM0.32m | 2:20PM0.29m | 2:59AM0.34m | 3:17PM0.32m | 3:55AM0.39m | ||||||||||||||||||
 |  | | | | | |  | |  |  | | | |  | | | | | | | | | | |
 | — | — | — | — | — | 7:41 | — | — | — | — | — | — | — | 7:41 | — | — | — | — | — | — | — | 7:43 | — | — |
 | 5:08 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | 5:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 10 | 10 | 10 | 10 | 13 | 15 | 14 | 17 | 18 | 12 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 12 | 11 | 11 | 11 | 13 |
6 | 7 | 7 | 4 | 6 | 9 | 9 | 11 | 14 | 8 | 9 | 8 | 8 | 7 | 6 | 6 | 6 | 7 | 10 | 11 | 10 | 9 | 10 | 12 | |
Swell 1 Height (m) Direction Period (s) | ENE 5 | ENE 7 | NE 5 | NE 8 | E 13 | E 8 | E 10 | NE 8 | E 6 | NE 4 | NE 4 | SE 5 | NE 6 | ENE 6 | — | S 9 | E 11 | S 13 | E 6 | ENE 4 | NE 4 | ENE 4 | ENE 4 | ENE 4 |
 kJ | 5 | 4 | 7 | 16 | 3 | 1 | 2 | 17 | 3 | 9 | 7 | 3 | 10 | 7 | — | 2 | 2 | 3 | 1 | 6 | 4 | 3 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | ENE 7 | E 13 | E 13 | E 13 | E 13 | ENE 5 | — | N 3 | NE 8 | ENE 5 | SE 4 | ESE 4 | E 8 | E 11 | S 13 | E 11 | S 13 | S 13 | S 13 | E 6 | E 6 | S 12 |
| kJ | 7 | 2 | 4 | 3 | 3 | 3 | 3 | 3 | — | 2 | 10 | 3 | 3 | 1 | 1 | 3 | 3 | 2 | 3 | 3 | 3 | 1 | 1 | 3 |
Swell 3 Height (m) Direction Period (s) | E 14 | E 14 | E 9 | S 11 | S 19 | E 10 | E 8 | E 12 | E 12 | NE 8 | S 12 | NE 7 | E 8 | E 8 | S 10 | SSW 11 | S 9 | SE 11 | SE 11 | SE 11 | E 11 | S 12 | S 12 | E 12 |
| kJ | 4 | 4 | 7 | 2 | 7 | 2 | 1 | 3 | 3 | 10 | 3 | 9 | 1 | 1 | 2 | 13 | 2 | 5 | 5 | 5 | 2 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | — | NE 5 | NW 2 | N 3 | N 4 | N 4 | NNE 4 | NNE 4 | NNE 3 | NW 3 | SSE 4 | S 5 | S 5 | — | NE 6 | NE 3 | NE 4 | NE 4 | NE 4 | — | — | — | — | — |
| kJ | — | 7 | 1 | 11 | 30 | 31 | 16 | 10 | 13 | 1 | 6 | 27 | 23 | — | 8 | 4 | 10 | 12 | 7 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 38 | 42 | 38 | 40 | 149 | 178 | 243 | 149 | 149 | 161 | 25 | 25 | 25 | 25 | 33 | 33 | 33 | 33 | 25 | 25 | 25 | 25 | 25 | 33 |
Best forecast wave conditions in Canterbury | ||||||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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