Surf Forecasts:
Backdoor 4 surf forecast from 14 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 1AM (local time) - 8ft (2.5m), 8s period, S swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 4PM (local time) - 11ft (3.5m), 10s period, S swell with 2,684 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 1AM (local time) - 8ft (2.5m), 8s period with S swell.
Best Forecast Surf Conditions for Backdoor 4 this week:
The surf forecast for Backdoor 4 over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 16) at 1AM. The primary swell is predicted to be 2.5m and 8s period with a secondary swell of 0.3m and 6s. Another secondary swell of 0.2m and 14s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Backdoor 4 in the next 16 days are 3.5m 10s and forecast to arrive on Wednesday (Sep 16) at 4PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Monday (Sep 21) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 16th Sep) | 8ft (2.5m) 8s |
| Best Surf | 1AM (Wed 16th Sep) | 8ft (2.5m) 8s |
| Most Powerful | 4PM (Wed 16th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Backdoor 4 over the next 16 days.
The Lowdown
Alright, let’s be real here. The next couple of days are a total dud. Tiny, weak, short-period slop – nothing but 0.5m to 0.7m of mush with hardly any energy. Not worth suiting up for.
Then Wednesday afternoon, the ocean wakes up. A big south swell hits, pushing 3.5m faces with a 9-10 second period. The energy is massive, 2045 and climbing. The wind is fresh offshore, but this is way too big. This is a heavy, expert-only situation. You’d be putting yourself in danger.
Thursday is still oversized and powerful, with 3.0m and 2.2m waves and energy readings up to 3193. It’s clean but still way too big for most. Keep your feet on the sand.
Friday drops a bit but the wind turns onshore and messes it up. It’s marginal, and the afternoon gets choppy. Not your day.
Then we get a gem. Saturday morning is small, 0.9m, but it’s absolutely glassy. A clean, playful little wave. The energy is low, but it’s smooth. Perfect for a longboard. This is one of the rare user-friendly windows.
Sunday and Monday morning are flat and messy. But Monday afternoon, the south swell starts to pulse again, pushing back up to 2.2m with some punch.
And then we get the real standout: Tuesday the 22nd. That’s the day. The swell is still solid at 2.0m, the period stretches out to 11 seconds, and the direction is prime from the SSE. The wind is light offshore, and the energy is a strong 1276. This is the one. For experienced surfers, this will be the best, most powerful and cleanest session of the whole forecast. The break is going to be handling a lot of water.
After that, it’s all downhill. From the 23rd onwards, the onshore winds just destroy it. Everything is cross-onshore, lumpy, and messy. The 27th and 28th have some size, 1.9m to 2.1m, but it’s all short-period and blown out. With that kind of fresh onshore wind and chop, the lineup is going to be a battle. Honestly, this looks more like a kitesurfing forecast than a surfing one.
So, to sum it up: Saturday the 19th for the clean small stuff, Tuesday the 22nd is the big one for the experienced crew. Everything after that is best left alone.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon night, min 9°C on Wed night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Sun morning, min 11°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | NE 6 | NE 6 | NE 6 | S 8 | S 9 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | S 9 | S 9 | S 8 | S 19 |
Wave Graph  | |||||||||||||||||||
 kJ | 126 | 40 | 18 | 949 | 2005 | 2684 | 2471 | 1765 | 854 | 463 | 364 | 334 | 210 | 149 | 146 | 80 | 52 | 22 | 29 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | off | cross-off | off | off | off | off | cross-off | cross-off | cross | cross-on | cross-on | cross | glassy | cross-off | cross-on | on | cross-on | cross-on |
High Tide | 10:13PM1.25m | 10:34AM1.46m | 10:54PM1.12m | 11:13AM1.40m | 11:39PM1.01m | 11:59AM1.34m | 00:34AM0.92m | 12:54PM1.27m | 1:48AM0.86m | 2:04PM1.24m | 3:16AM0.87m | 3:16PM1.25m | |||||||
Low Tide | 4:10AM0.28m | 5:01PM0.31m | 4:42AM0.37m | 5:51PM0.39m | 5:18AM0.46m | 6:50PM0.46m | 6:02AM0.53m | 8:02PM0.50m | 7:03AM0.59m | 9:21PM0.50m | 8:23AM0.62m | 10:27PM0.45m | |||||||
 |  |  |  | | | | | | | | | | | | | | | | |
 | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | 5:47 | — | — |
 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 17 | 14 | 13 | 14 | 14 | 14 | 14 | 13 | 19 | 17 | 17 | 23 | 21 | 20 | 28 | 28 | 26 |
Feels °C | 18 | 20 | 14 | 6 | 4 | 5 | 5 | 9 | 10 | 12 | 14 | 13 | 16 | 18 | 17 | 17 | 22 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | NE 6 | NE 6 | ENE 14 | ENE 13 | E 13 | S 10 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | S 9 | S 9 | S 8 | S 10 |
| kJ | 75 | 40 | 18 | 6 | 20 | 16 | 3 | 1418 | 854 | 463 | 364 | 334 | 210 | 149 | 146 | 80 | 52 | 22 | 18 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 9 | E 14 | ENE 14 | — | — | S 19 | S 19 | E 13 | SSE 18 | S 18 | NE 4 | S 15 | S 17 | NE 4 | NE 4 | S 11 | NE 5 |
| kJ | 50 | 30 | 15 | 15 | 20 | — | — | 7 | 28 | 3 | 66 | 158 | 15 | 113 | 142 | 7 | 1 | 9 | 4 |
Swell 3 Height (m) Direction Period (s) | E 12 | — | E 13 | S 16 | — | — | — | E 13 | E 13 | S 19 | E 12 | E 12 | S 16 | NNE 4 | E 12 | S 15 | S 17 | NE 5 | S 19 |
| kJ | 12 | — | 14 | 5 | — | — | — | 3 | 3 | 7 | 3 | 3 | 129 | 2 | 3 | 41 | 6 | 1 | 29 |
Wind waves Height (m) Direction Period (s) | NE 6 | WNW 3 | SSE 4 | S 8 | S 9 | S 10 | S 10 | S 10 | — | — | — | ENE 3 | — | — | E 3 | — | — | NNE 2 | W 3 |
| kJ | 126 | 2 | 7 | 949 | 2005 | 2684 | 2471 | 1765 | — | — | — | 3 | — | — | 2 | — | — | 1 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 11 | 1358 | 168 | 781 | 787 | 168 | 0 | 91 | 0 | 3 | 37 | 0 | 0 | 0 | 2 | 3 | 123 | 2 |
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.
Information about the Backdoor 4 Surf forecast
The above surf forecast table for Backdoor 4 provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Backdoor 4 can be found by selecting the local surf guide option on the grey menu. Our Backdoor 4 surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Backdoor 4) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Backdoor 4 may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Backdoor 4 is 14 km (9 miles) from the city of Catherine Hill Bay. If you plan a holiday in Newcastle, look for hotels and other accommodation in Catherine Hill Bay. Catherine Hill Bay has rooms for a wide range of budgets as well as car hire and transport links.
Nearest