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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 Monday 18 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
13.0° C
(Which is 2.0°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 6PM is: 0.2m 10s primary swell from a East direction and 0.1m 10s secondary swell from a Southeast direction, 0.4m 3s secondary swell from a Northeast direction (forecast issued at 11:00am May 18). The wind direction is predicted to be cross-onshore.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 0.5ft (0.2m) | 10s |
| Afternoon (18 May) | 1.5ft (0.4m) | 10s |
| Evening (18 May) | 0.5ft (0.2m) | 10s |
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 14°C on Wed night, min 8°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 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 | 12 AM | 3 AM | 6 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 10 | E 10 | ENE 10 | E 10 | E 10 | NE 4 | NE 4 | E 9 | NE 4 | E 9 | E 11 | E 11 | E 10 | E 10 | E 10 | ENE 5 | ENE 5 | NE 5 | NE 5 | NE 5 | NE 5 | ENE 8 | NNW 4 | N 4 | |
8 | 8 | 38 | 7 | 7 | 7 | 9 | 7 | 7 | 7 | 9 | 9 | 8 | 8 | 8 | 9 | 10 | 7 | 7 | 7 | 6 | 6 | 24 | 23 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | cross-on | on | on | glassy | glassy | glassy | on | cross-on | cross-on | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | glassy | cross | cross | cross-on | |
High Tide | 5:47PM2.67m | 6:18AM2.45m | 6:45PM2.68m | 7:18AM2.45m | 7:42PM2.64m | |||||||||||||||||||
Low Tide | 11:28AM0.32m | 00:07AM0.33m | 12:26PM0.29m | 1:06AM0.31m | 1:23PM0.28m | 2:03AM0.32m | ||||||||||||||||||
 |  | |  | | | | | | | | |  | | | | | | | | | | | | |
 | 7:37 | — | — | — | — | — | — | 7:39 | — | — | — | — | — | — | — | 7:39 | — | — | — | — | — | — | — | 7:41 |
 | — | — | 5:10 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:08 | — | — | — | — | 5:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 8 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 9 | 10 | 11 | 10 | 10 | 9 | 11 | 14 |
5 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 7 | 8 | 8 | 8 | 5 | 6 | 7 | 8 | 7 | 8 | 5 | 6 | 10 | |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | SE 10 | E 10 | E 10 | E 9 | NE 4 | NE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 4 | ENE 5 | ENE 5 | ENE 5 | NE 5 | NE 5 | E 9 | NE 5 | ENE 8 | NE 7 | E 9 |
 kJ | 8 | 8 | 4 | 7 | 7 | 7 | 3 | 3 | 3 | 3 | 1 | 1 | 2 | 4 | 4 | 9 | 10 | 7 | 7 | 7 | 6 | 6 | 9 | 1 |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 11 | ENE 10 | SE 10 | SE 10 | SE 9 | E 9 | E 9 | E 9 | E 9 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 14 | E 9 | ENE 5 | E 10 | E 13 |
| kJ | 3 | 4 | 32 | 4 | 4 | 3 | 7 | 7 | 6 | 7 | 9 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 4 | 2 | 2 | 2 | 3 |
Swell 3 Height (m) Direction Period (s) | S 11 | — | E 14 | S 17 | S 17 | S 16 | SE 9 | SE 9 | E 12 | E 11 | SE 8 | SE 8 | SE 10 | SE 10 | S 9 | S 9 | E 15 | E 15 | E 14 | E 7 | NE 7 | E 10 | E 13 | E 10 |
| kJ | 2 | — | 4 | 6 | 6 | 5 | 3 | 3 | 3 | 2 | 3 | 3 | 4 | 4 | 2 | 2 | 4 | 4 | 4 | 1 | 2 | 2 | 3 | 2 |
Wind waves Height (m) Direction Period (s) | NE 3 | NE 3 | ENE 10 | NE 3 | NE 3 | NE 4 | NE 4 | NE 4 | NE 4 | NE 4 | — | — | NE 4 | — | — | — | — | — | — | NE 5 | — | NNW 3 | NNW 4 | N 4 |
| kJ | 2 | 3 | 38 | 3 | 5 | 6 | 9 | 5 | 7 | 5 | — | — | 6 | — | — | — | — | — | — | 7 | — | 5 | 24 | 23 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 33 | 33 | 33 | 33 | 33 | 33 | 35 | 35 | 28 | 38 | 38 | 38 | 38 | 38 | 34 | 38 | 38 | 38 | 38 | 161 | 161 | 40 | 38 | 178 |
Best forecast wave conditions in Canterbury | ||||||||||||||||||||||||
Best forecast wave conditions in New Zealand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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