- Forecast
- Maps
- Live
- Weather State
- Spot Information
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 3 am Thursday 21 May 2026 AESTForecast update in hr min s Forecast update imminent
Backdoor 4 surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Backdoor 4 sea temperature is
20.8° C
(Which is normal for this time of year)How big are the waves at Backdoor 4 today?
The current surf forecast for Backdoor 4 at 6AM is: 3.0m 9s primary swell from a South direction and 1.1m 10s secondary swell from a East direction (forecast issued at 03:00am May 21). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (AEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 10ft (3.0m) | 9s |
| Afternoon (21 May) | 10ft (3.0m) | 9s |
| Evening (21 May) | 8ft (2.5m) | 8s |
Table - waves today at Backdoor 4. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 12mm), heaviest on Sat morning. Warm (max 20°C on Sat afternoon, min 16°C on Thu morning). Winds decreasing (fresh winds from the SSW on Thu morning, light winds from the E by Sat night). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | ESE 10 | ESE 10 | ESE 11 | ESE 11 | ESE 11 | E 11 | |
1553 | 1394 | 1677 | 1575 | 1465 | 1311 | 912 | 725 | 654 | 654 | 674 | 655 | 654 | 1481 | 1595 | 1536 | 1412 | 1274 | 1514 | 1450 | 1668 | 1658 | 1689 | 1694 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | off | off | off | cross-off | cross | cross-off | cross-off | cross-off | |
High Tide | 11:06PM1.70m | 12:17PM1.06m | 00:05AM1.59m | 1:24PM1.06m | 1:07AM1.47m | 2:31PM1.11m | ||||||||||||||||||
Low Tide | 6:09AM0.07m | 5:33PM0.45m | 7:09AM0.13m | 6:42PM0.51m | 8:07AM0.18m | 7:59PM0.54m | ||||||||||||||||||
 | |  |  | | |  | |  | | | |  | | |  | | | | |  | | | | |
 | — | 6:41 | — | — | — | — | — | — | — | 6:41 | — | — | — | — | — | — | — | 6:41 | — | — | — | — | — | — |
 | — | — | — | — | — | 4:59 | — | — | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:58 | — | — |
— | — | — | — | — | — | 1 | 1 | — | — | — | — | 1 | 1 | 1 | — | — | — | 1 | 2 | 3 | 1 | — | — | |
Temp °C | 14 | 15 | 15 | 17 | 16 | 17 | 17 | 17 | 16 | 16 | 16 | 17 | 18 | 18 | 17 | 18 | 17 | 17 | 18 | 18 | 19 | 20 | 20 | 20 |
8 | 9 | 9 | 11 | 9 | 11 | 11 | 12 | 11 | 11 | 11 | 11 | 13 | 12 | 12 | 13 | 13 | 13 | 16 | 16 | 18 | 18 | 17 | 17 | |
Swell 1 Height (m) Direction Period (s) | S 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | ESE 10 | S 13 | S 13 | S 12 | SE 10 | — | ESE 10 | ESE 10 | ESE 11 | ESE 11 | ESE 11 | E 11 |
 kJ | 1209 | 296 | 255 | 250 | 250 | 239 | 194 | 194 | 154 | 117 | 118 | 196 | 260 | 31 | 28 | 25 | 1412 | — | 1280 | 1450 | 1668 | 1658 | 1689 | 1694 |
Swell 2 Height (m) Direction Period (s) | E 10 | — | — | — | — | — | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 14 | — | S 14 | — | SSW 11 | — | — | — | S 22 | S 21 | S 20 | S 18 |
| kJ | 296 | — | — | — | — | — | 5 | 5 | 5 | 5 | 5 | 17 | 35 | — | 4 | — | 23 | — | — | — | 10 | 9 | 30 | 27 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 14 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — |
Wind waves Height (m) Direction Period (s) | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 10 | SE 11 | SE 11 | — | SE 10 | ESE 10 | — | — | — | — | — |
| kJ | 1553 | 1394 | 1677 | 1575 | 1465 | 1311 | 912 | 725 | 654 | 654 | 674 | 655 | 654 | 1481 | 1595 | 1536 | — | 1274 | 1514 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 45 | 45 | 141 | 141 | 141 | 135 | 52 | 135 | 0 | 45 | 141 | 141 | 141 | 156 | 168 | 168 | 0 | 135 | 141 | 68 | 68 | 135 | 68 |
Best forecast wave conditions in Newcastle | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Backdoor 4 surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest