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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 3 pm 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
21.1° C
(Which is slightly warmer than usual)How big are the waves at Backdoor 4 today?
The current surf forecast for Backdoor 4 at 10PM is: 2.4m 8s primary swell from a South-southeast direction and 1.0m 10s secondary swell from a East direction, 0.1m 16s secondary swell from a South direction (forecast issued at 03:00pm May 21). The wind direction is predicted to be offshore and the swell rating is 11.
| Time (AEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | - | - |
| 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 11mm), heaviest on Sat morning. Warm (max 20°C on Sat morning, min 17°C on Thu afternoon). Winds decreasing (fresh winds from the S on Thu afternoon, light winds from the ESE by Sun morning). | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 7 AM | 10 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 9 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | ESE 11 | ESE 11 | ESE 12 | ESE 12 | ESE 12 | E 12 | E 12 | E 12 | E 12 | |
1373 | 1288 | 924 | 725 | 671 | 671 | 674 | 645 | 612 | 1370 | 1583 | 1489 | 1450 | 1446 | 1669 | 1807 | 2015 | 2389 | 2354 | 2314 | 2134 | 2111 | 2147 | 2165 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | off | off | off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | |
High Tide | 12:17PM1.06m | 00:05AM1.59m | 1:24PM1.06m | 1:07AM1.47m | 2:31PM1.11m | 2:12AM1.35m | ||||||||||||||||||
Low Tide | 5:33PM0.45m | 7:09AM0.13m | 6:42PM0.51m | 8:07AM0.18m | 7:59PM0.54m | 9:01AM0.22m | ||||||||||||||||||
 |  |  |  |  | | | |  |  | | |  | | | | | | | | | | | | |
 | — | — | — | — | — | 6:41 | — | — | — | — | — | — | — | 6:41 | — | — | — | — | — | — | — | 6:43 | — | — |
 | — | 4:59 | — | — | — | — | — | — | — | 4:58 | — | — | — | — | — | — | — | 4:58 | — | — | — | — | — | 4:57 |
— | — | 1 | 1 | — | — | — | — | 1 | 1 | — | 1 | — | — | — | 2 | 2 | 1 | 1 | — | — | — | — | — | |
Temp °C | 18 | 17 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 17 | 18 | 17 | 17 | 18 | 19 | 20 | 20 | 20 | 20 | 19 | 19 | 20 | 19 |
12 | 11 | 12 | 13 | 12 | 12 | 12 | 12 | 13 | 12 | 12 | 13 | 12 | 13 | 14 | 16 | 18 | 18 | 17 | 17 | 16 | 16 | 17 | 18 | |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | ESE 10 | S 13 | S 13 | SSW 12 | SE 10 | SE 10 | — | ESE 11 | ESE 11 | ESE 12 | ESE 12 | ESE 12 | E 12 | E 12 | E 12 | E 12 |
 kJ | 245 | 245 | 194 | 190 | 151 | 148 | 143 | 190 | 294 | 31 | 28 | 47 | 1450 | 1446 | — | 1807 | 2015 | 2389 | 2354 | 2314 | 2134 | 2111 | 2147 | 2165 |
Swell 2 Height (m) Direction Period (s) | — | — | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 14 | — | — | — | — | — | — | — | S 14 | S 21 | S 20 | S 19 | S 18 | S 16 | S 15 | S 15 |
| kJ | — | — | 5 | 5 | 5 | 5 | 5 | 17 | 35 | — | — | — | — | — | — | — | 4 | 8 | 8 | 27 | 24 | 21 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 22 | S 14 | S 14 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 | 4 | 4 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 9 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 10 | SE 10 | SE 10 | — | — | ESE 10 | — | — | — | — | — | — | — | — | — |
| kJ | 1373 | 1288 | 924 | 725 | 671 | 671 | 674 | 645 | 612 | 1370 | 1583 | 1489 | — | — | 1669 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 151 | 176 | 135 | 52 | 141 | 129 | 52 | 141 | 141 | 141 | 168 | 168 | 68 | 141 | 141 | 68 | 68 | 68 | 176 | 176 | 68 | 68 | 68 | 36 |
Best forecast wave conditions in Newcastle | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
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