Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Sumner Bar surfForecast / Canterbury / New Zealand
48hr Weather and Surf, issued 6 am Tuesday 30 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
17.5° C
(Which is 3.7°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: 1.0m 5s primary swell from a East-southeast direction and 0.2m 10s secondary swell from a East direction, 0.2m 8s secondary swell from a East direction (forecast issued at 06:00am December 30). The wind direction is predicted to be cross-shore.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Dec) | 3.5ft (1.0m) | 4s |
| Afternoon (30 Dec) | 3.5ft (1.0m) | 5s |
| Evening (30 Dec) | 5.5ft (1.7m) | 9s |
Table - waves today at Sumner Bar. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 30 | Wednesday 31 | Thursday 01 | Fri 02 | |||||||||||||||||||||
| 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) (?) | 9 | 10 | 4 | 5 | 5 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 40 | 34 | 35 | 51 | 71 | 264 | 513 | 382 | 2270 | 557 | 484 | 423 | 339 | 656 | 270 | 189 | 185 | 146 | 197 | 206 | 210 | 177 | 115 | 65 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross- off | off | cross- off | off | off | cross- on | on | cross- on | cross- on | cross- off | off | off | off | off | off | off |
High Tide / height (m) | 1:21PM 2.26 | 1:51AM 2.35 | 2:19PM 2.30 | 2:49AM 2.45 | 3:18PM 2.34 | |||||||||||||||||||
Low Tide / height (m) | 7:07AM 0.55 | 7:37PM 0.44 | 8:09AM 0.52 | 8:30PM 0.40 | 9:10AM 0.46 | 9:25PM 0.36 | ||||||||||||||||||
Tuesday 30 | Wednesday 31 | Thursday 01 | Fri 02 | |||||||||||||||||||||
| Sunrise | - | 5:48 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 9:12 | - | - | - | - | - | - | - | 9:12 | - | - | - | - | - | - | - | 9:13 | - | - |
 |  | | |  |  |  | | | |  | | | |  | | |  | | |  | | | | |
Rain (mm) | - | - | - | - | 1 | 6 | 1 | - | 1 | 1 | - | - | - | - | - | - | - | 1 | - | 1 | - | - | 1 | - |
| Temp. °C | 12 | 13 | 13 | 14 | 13 | 12 | 12 | 12 | 12 | 11 | 13 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 17 | 20 | 19 | 16 | 15 |
| Feels °C (?) | 10 | 12 | 8 | 9 | 9 | 8 | 8 | 9 | 10 | 9 | 11 | 16 | 16 | 14 | 13 | 14 | 14 | 14 | 15 | 15 | 20 | 18 | 15 | 13 |
- 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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