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Cape Northumberland Surf Forecast
/ SA – East Coast (28 breaks) / South Australia (91 breaks) /
Surf Forecasts:
Cape Northumberland surfForecast / SA – East Coast / Australia
48hr Weather and Surf, issued 8 pm Thursday 02 Oct 2025 ACST
How big are the waves at Cape Northumberland today?
The current surf forecast for Cape Northumberland at 10PM is: 3.0m 18s primary swell from a Southwest direction and 0.7m 15s secondary swell from a Southwest direction, 4.0m 12s secondary swell from a West-southwest direction (forecast issued at 08:30pm October 02). The wind direction is predicted to be cross-onshore.
| Time (ACST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (02 Oct) | - | - |
| Afternoon (02 Oct) | - | - |
| Evening (02 Oct) | 13ft (4.0m) | 12s |
Table - waves today at Cape Northumberland. (Swell directed towards the surf break)
Thu 02 | Friday 03 | Saturday 04 | Sunday 05 | |||||||||||||||||||||
| 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 5968 | 5256 | 6293 | 16818 | 12541 | 10993 | 8804 | 7710 | 7329 | 7500 | 8157 | 7881 | 7615 | 6797 | 5720 | 4738 | 3962 | 3237 | 2516 | 2169 | 2457 | 2643 | 1804 | 1572 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross- on |
High Tide / height (m) | 2:33AM 0.59 | 11:18AM 0.96 | 12:24AM 0.62 | 11:37AM 0.99 | 11:58PM 0.71 | 11:57AM 0.97 | ||||||||||||||||||
Low Tide / height (m) | 7:27PM 0.36 | 3:10AM 0.59 | 6:55PM 0.40 | 4:44AM 0.50 | 6:32PM 0.41 | 5:25AM 0.40 | ||||||||||||||||||
Thu 02 | Friday 03 | Saturday 04 | Sunday 05 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - | - | 5:37 | - | - | - |
| Sunset | 6:10 | - | - | - | - | - | - | - | 6:12 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - |
 |  | | |  | | | |  |  |  | | | | | | | | | | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 |
| Temp. °C | 12 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 12 | 12 | 11 | 10 | 14 | 20 | 23 | 22 | 21 | 22 | 22 | 20 | 20 | 18 | 15 |
| Feels °C (?) | 5 | 6 | 6 | 6 | 7 | 8 | 9 | 10 | 10 | 10 | 9 | 7 | 6 | 9 | 16 | 19 | 18 | 15 | 14 | 15 | 14 | 14 | 13 | 10 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for SA - East Coast
Offshore wind reported 15 km from Bullies (moderate winds from the W at HindmarshIslandAws 15 km from Bullies). 2.6m 12s groundswell from the SW with a 1.4m 18s long period groundswell from the SSW. 2 swells combining so expect closeout sets.
36 km away, 1 h 35 min ago
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