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:
Cape Northumberland surfForecast / SA – East Coast / Australia
48hr Weather and Surf, issued 9 am Thursday 01 Jan 2026 ACDTForecast update in hr min s Forecast update imminent
Cape Northumberland surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cape Northumberland sea temperature is
17.1° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Cape Northumberland today?
The current surf forecast for Cape Northumberland at 3PM is: 1.6m 12s primary swell from a Southwest direction (forecast issued at 09:30am January 01). An open ocean swell of 1.3m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ACDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Jan) | 6ft (1.8m) | 12s |
| Afternoon (01 Jan) | 5ft (1.6m) | 12s |
| Evening (01 Jan) | 5ft (1.6m) | 12s |
Table - waves today at Cape Northumberland. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 01 | Friday 02 | Saturday 03 | Sun 04 | |||||||||||||||||||||
| 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 | 4 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 19 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 952 | 997 | 706 | 694 | 683 | 671 | 626 | 544 | 534 | 686 | 1149 | 1615 | 1869 | 2187 | 2107 | 2868 | 2796 | 2772 | 2027 | 1704 | 1680 | 1558 | 1398 | 1162 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | ||||||||||||||||||||||||
Low Tide / height (m) | ||||||||||||||||||||||||
Thursday 01 | Friday 02 | Saturday 03 | Sun 04 | |||||||||||||||||||||
| Sunrise | 5:47 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 8:32 | - | - | - | - | - | - | - | 8:32 | - | - | - | - | - | - | - | 8:32 | - | - | - |
 | |  | | |  |  | | | | | | | | |  |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 16 | 16 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 |
| Feels °C (?) | 7 | 6 | 7 | 6 | 7 | 7 | 7 | 8 | 7 | 11 | 10 | 9 | 8 | 11 | 11 | 12 | 12 | 12 | 11 | 11 | 10 | 9 | 10 | 10 |
- 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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