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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 pm Wednesday 20 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 5AM is: 3.0m 10s primary swell from a South direction and 1.1m 10s secondary swell from a East direction (forecast issued at 09:00pm May 20). 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 18mm), heaviest on Sat morning. Warm (max 20°C on Sat afternoon, min 14°C on Wed night). Winds decreasing (fresh winds from the SSW on Thu morning, light winds from the E by Sat morning). | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Saturday 23 | |||||||||||||||||||||
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 | 7 AM | 10 AM | 1 PM | 4 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
S 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 11 | SE 11 | SE 11 | SE 10 | ESE 11 | ESE 10 | ESE 10 | ESE 11 | |
958 | 1065 | 1553 | 1238 | 1610 | 1677 | 1404 | 1197 | 903 | 709 | 636 | 570 | 602 | 589 | 627 | 833 | 1509 | 1547 | 1445 | 1601 | 1628 | 1631 | 1497 | 1658 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross | cross | |
High Tide | 11:06PM1.70m | 12:17PM1.06m | 00:05AM1.59m | 1:24PM1.06m | 1:07AM1.47m | 2:31PM1.11m | ||||||||||||||||||
Low Tide | 4:32PM0.37m | 6:09AM0.07m | 5:33PM0.45m | 7:09AM0.13m | 6:42PM0.51m | 8:07AM0.18m | ||||||||||||||||||
 | | |  |  | | |  |  | | | |  | | |  | | | |  | | | | | |
 | — | — | — | 6:41 | — | — | — | — | — | — | — | 6:41 | — | — | — | — | — | — | — | 6:41 | — | — | — | — |
 | — | — | — | — | — | — | — | 4:59 | — | — | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:58 |
— | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | 1 | 1 | — | — | 1 | 1 | 1 | 3 | 4 | 2 | |
Temp °C | 17 | 16 | 14 | 14 | 14 | 16 | 16 | 17 | 18 | 17 | 16 | 16 | 16 | 17 | 17 | 18 | 17 | 17 | 17 | 18 | 18 | 19 | 19 | 20 |
12 | 12 | 9 | 9 | 9 | 10 | 10 | 11 | 13 | 12 | 12 | 11 | 11 | 12 | 11 | 12 | 12 | 13 | 13 | 15 | 16 | 17 | 18 | 18 | |
Swell 1 Height (m) Direction Period (s) | ENE 10 | E 10 | S 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | S 13 | S 13 | SE 11 | SE 11 | SE 10 | ESE 11 | ESE 10 | ESE 10 | ESE 11 |
 kJ | 363 | 353 | 1115 | 250 | 255 | 250 | 250 | 245 | 194 | 194 | 151 | 148 | 115 | 149 | 200 | 31 | 28 | 1547 | 1445 | 1359 | 1628 | 1631 | 1497 | 1658 |
Swell 2 Height (m) Direction Period (s) | — | — | E 10 | — | — | — | — | — | S 16 | — | S 16 | S 16 | S 15 | S 15 | S 14 | SSW 13 | — | S 14 | SSW 11 | — | SE 10 | — | S 14 | S 21 |
| kJ | — | — | 296 | — | — | — | — | — | 5 | — | 5 | 5 | 5 | 17 | 35 | 57 | — | 4 | 24 | — | 49 | — | 4 | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 |
Wind waves Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 11 | — | — | SE 10 | — | — | — | — |
| kJ | 958 | 1065 | 1553 | 1238 | 1610 | 1677 | 1404 | 1197 | 903 | 709 | 636 | 570 | 602 | 589 | 627 | 833 | 1509 | — | — | 1601 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 45 | 135 | 151 | 141 | 135 | 52 | 52 | 0 | 0 | 135 | 141 | 141 | 141 | 168 | 156 | 141 | 45 | 141 | 52 | 68 |
Best forecast wave conditions in Newcastle | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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