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Surf Forecasts:
Sumner Bar surfForecast / Canterbury / New Zealand
48hr Weather and Surf, issued 6 am Thursday 11 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
16.6° C
(Which is 3.8°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 2PM is: 0.6m 11s primary swell from a East direction and 0.1m 9s secondary swell from a Southeast direction, 0.4m 6s secondary swell from a East-northeast direction (forecast issued at 06:00am December 11). The wind direction is predicted to be cross-onshore.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 1.5ft (0.4m) | 12s |
| Afternoon (11 Dec) | 2ft (0.6m) | 11s |
| Evening (11 Dec) | 2.5ft (0.7m) | 11s |
Table - waves today at Sumner Bar. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| 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 | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 8 | 10 | 8 | 8 | 3 | 4 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 45 | 44 | 44 | 92 | 114 | 116 | 23 | 22 | 19 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 16 | 15 | 14 | 27 | 35 | 34 | 7 | 11 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | on | on | cross- on | glass | glass | on | cross- on | cross- on | on | on | on |
High Tide / height (m) | 10:41AM 2.34 | 11:08PM 2.26 | 11:36AM 2.26 | 12:00AM 2.20 | 12:29PM 2.20 | 12:54AM 2.16 | ||||||||||||||||||
Low Tide / height (m) | 4:20AM 0.39 | 4:57PM 0.45 | 5:15AM 0.48 | 5:52PM 0.51 | 6:10AM 0.59 | 6:46PM 0.57 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| Sunrise | - | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 9:01 | - | - | - | - | - | - | - | 9:02 | - | - | - | - | - | - | - | 9:04 | - | - |
 |  | | |  | |  |  | | |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 14 | 13 | 14 | 14 | 14 | 14 | 13 | 11 | 11 | 12 | 13 | 13 | 14 | 14 | 12 | 12 | 12 | 11 | 14 | 15 | 14 | 13 | 13 | 13 |
| Feels °C (?) | 12 | 10 | 10 | 10 | 10 | 10 | 11 | 8 | 8 | 9 | 9 | 9 | 11 | 11 | 9 | 10 | 11 | 10 | 12 | 12 | 10 | 9 | 9 | 9 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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