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Backdoor 4 Surf Forecast
/ NSW – Newcastle (55 breaks) / New South Wales (297 breaks) /
Surf Forecasts:
Backdoor 4 surfForecast / NSW – Newcastle / Australia
48hr Weather and Surf, issued 9 am Thursday 18 Sep 2025 AEST
How big are the waves at Backdoor 4 today?
The current surf forecast for Backdoor 4 at 4PM is: 1.1m 9s primary swell from a South direction and 0.1m 11s secondary swell from a East direction, 0.6m 7s secondary swell from a East-northeast direction (forecast issued at 09:00am September 18). The wind direction is predicted to be cross-onshore.
| Time (AEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 3ft (0.9m) | 11s |
| Afternoon (18 Sep) | 3.5ft (1.1m) | 9s |
| Evening (18 Sep) | 2.5ft (0.8m) | 8s |
Table - waves today at Backdoor 4. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| 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) (?) | 11 | 11 | 10 | 9 | 8 | 8 | 6 | 6 | 6 | 10 | 10 | 6 | 6 | 6 | 6 | 6 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 89 | 202 | 273 | 181 | 107 | 82 | 167 | 77 | 60 | 90 | 64 | 80 | 83 | 53 | 41 | 46 | 37 | 51 | 49 | 31 | 30 | 17 | 106 | 392 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | glass | cross | cross- on | cross- on | on | on | cross | cross- on | on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross |
High Tide / height (m) | 5:54AM 1.09 | 5:49PM 1.51 | 6:36AM 1.18 | 6:34PM 1.52 | 7:12AM 1.26 | 7:14PM 1.51 | ||||||||||||||||||
Low Tide / height (m) | 11:24AM 0.42 | 12:31AM 0.18 | 12:16PM 0.35 | 1:07AM 0.15 | 1:00PM 0.30 | 1:38AM 0.14 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| Sunrise | 5:50 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 5:45 | - | - | - | - | - | - | - | 5:46 | - | - | - | - | - | - | - | 5:47 | - | - | - | - |
 | | | |  | | | | | | |  |  |  | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 15 | 16 | 17 | 17 | 16 | 15 | 14 | 14 | 17 | 22 | 21 | 20 | 17 | 16 | 16 | 17 | 21 | 22 | 21 | 17 | 14 | 12 | 11 |
| Feels °C (?) | 10 | 14 | 12 | 13 | 12 | 12 | 14 | 12 | 11 | 14 | 17 | 17 | 19 | 14 | 13 | 13 | 13 | 16 | 16 | 16 | 12 | 9 | 8 | 7 |
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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 NSW - Newcastle
Cross-shore wind has turned cross-on at Backdoor 4 (light winds from the ENE at Norah Head Automatic Weather Station 2 km from Backdoor 4). 0.5m 7s swell from the ENE with a 0.2m 10s swell from the E. 2 swells combining to make bigger set waves.
1 h 3 min ago
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