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Surf Forecasts:
Sumner Bar surfForecast / Canterbury / New Zealand
48hr Weather and Surf, issued 12 pm Friday 12 Dec 2025 NZDTForecast 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
17.0° C
(Which is 4.1°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 5PM is: 0.3m 10s primary swell from a East-northeast direction and 0.2m 6s secondary swell from a East direction (forecast issued at 12:00pm December 12). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 1ft (0.3m) | 10s |
| Afternoon (12 Dec) | 1ft (0.3m) | 10s |
| Evening (12 Dec) | 1ft (0.3m) | 9s |
Table - waves today at Sumner Bar. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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 | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 4 | 4 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 19 | 19 | 18 | 17 | 17 | 16 | 16 | 16 | 15 | 34 | 23 | 45 | 17 | 32 | 47 | 57 | 55 | 65 | 99 | 170 | 155 | 464 | 102 | 85 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | glass | cross- on | cross- on | on | glass | glass | on | cross- on | cross- on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | glass | cross- on | cross- on |
High Tide / height (m) | 11:36AM 2.26 | 12:00AM 2.20 | 12:29PM 2.20 | 12:54AM 2.16 | 1:19PM 2.15 | 1:47AM 2.15 | ||||||||||||||||||
Low Tide / height (m) | 5:52PM 0.51 | 6:10AM 0.59 | 6:46PM 0.57 | 7:06AM 0.68 | 7:35PM 0.62 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:41 |
| Sunset | - | - | - | 9:02 | - | - | - | - | - | - | - | 9:04 | - | - | - | - | - | - | - | 9:04 | - | - | - | - |
 | | |  |  | | | | | | | | | |  | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 15 | 16 | 15 | 12 | 12 | 12 | 13 | 14 | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 15 | 16 | 16 | 16 | 16 | 16 |
| Feels °C (?) | 11 | 11 | 15 | 12 | 9 | 10 | 11 | 12 | 12 | 12 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 11 | 12 | 14 | 15 | 15 | 12 | 12 |
- 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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