Surf Forecasts:
Backdoor 4 surf forecast from 16 Aug 2026:
- Best quality surf: Monday 17 Aug, 1AM (local time) - 3ft (0.9m), 11s period, S swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 3.5ft (1.1m), 10s period, ESE swell with 210 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 1AM (local time) - 3ft (0.9m), 11s 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 Monday (Aug 17) at 1AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.9m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Backdoor 4 in the next 16 days are 1.1m 10s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 10s period and expected on Monday (Aug 24) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 17th Aug) | 3ft (0.9m) 11s |
| Best Surf | 1AM (Mon 17th Aug) | 3ft (0.9m) 11s |
| Most Powerful | 4PM (Wed 19th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Backdoor 4 over the next 16 days.
The Lowdown
Alright, mates, Rusty here. Let’s be straight with you about the surf ahead. It’s going to be a real test of patience, especially right out of the gate.
We’re looking at a long, flat spell for our stretch of coast, and there’s basically nothing rideable for the first week. There’s a gap of several days with no recommendations at all. The swell window is just shut, and the odd pulse that does show up is riddled with short-period, cross-onshore junk. You’d be fighting a losing battle if you tried to make something of it. This is one of those times where you keep the board in the car and enjoy the beach.
Things finally start to look up, but it’s a slow burn. The first real glimmer of hope shows on Monday, August 25th. It's still not perfect, but we finally get some proper south in the water, with a couple of long-period pulses. The *Tuesday morning* window on the 25th catches an inconsistent 5ft of south swell with a 9-second period. The energy is moderate (365), but it’s crossed by a light westerly, which mucks up the surface a little. The *Tuesday afternoon* gets a better bump, with a 5ft south swell and a longer 11-second period. Energy ticks up to a solid 609, but the wind swings a bit more onshore. It’s all still a bit marginal.
The, we get a punch of wind on Wednesday, August 26th and Thursday, August 27th. The swell’s still pushing through, but it’s blowing a solid 19-22 mph from the west, which is just going to destroy the surface. It’s clean-up, messy surf. The conditions are too poor to recommend; you’d be wasting your time. The energy is strong, but it’s all for nothing with that wind.
Then, it settles down. Friday, August 28th is the standout of this whole stretch. The morning still has some cross-off wind, but the *afternoon* looks choice. We’ve got a 3ft south swell, an 11-second period, gentle offshore winds from the south, and clean conditions. The energy is moderate (201). It’s a classic, clean little reef wave in the making. This is the one to circle.
The final days of the forecast get small again. Saturday, August 29th has a brief northeast pulse that’s junked by a cross-onshore wind. From Sunday on, it’s back to tiny, poor surf. Nothing to get excited about.
As for the water, the temperature is about average for this time of year, so no shock waiting for you.
Alright, get out there on Friday arvo, and otherwise enjoy the time off.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon morning. Very mild (max 16°C on Sun night, min 14°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 20°C on Thu morning, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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) | S 11 | ESE 7 | ESE 7 | ESE 7 | S 11 | ESE 7 | ESE 11 | ESE 10 | ESE 10 | E 9 | ESE 7 | ESE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 |
Wave Graph | |||||||||||||||||||
189 | 132 | 113 | 141 | 85 | 115 | 116 | 90 | 210 | 162 | 75 | 41 | 68 | 53 | 30 | 22 | 15 | 16 | 10 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-off | cross | cross | cross-off | cross-on | glassy | cross | on | on | cross-on | cross | glassy | cross | cross-on | cross-off | cross-off | glassy |
High Tide | 10:43PM1.39m | 11:21AM1.37m | 11:25PM1.23m | 12:04PM1.35m | 00:11AM1.08m | 12:52PM1.32m | 1:05AM0.96m | 1:49PM1.28m | 2:17AM0.88m | 2:54PM1.27m | 3:41AM0.86m | 4:01PM1.29m | |||||||
Low Tide | 5:00AM0.19m | 5:30PM0.36m | 5:34AM0.29m | 6:25PM0.44m | 6:11AM0.39m | 7:30PM0.50m | 6:53AM0.47m | 8:46PM0.53m | 7:49AM0.53m | 10:05PM0.51m | 8:59AM0.56m | 11:10PM0.46m | |||||||
— | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | |
— | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | |
mm | — | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | 3 | — | — | 3 |
Temp °C | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 20 | 19 | 19 | 16 | 15 | 14 | 17 | 16 | 16 |
Feels °C | 15 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 15 | 14 | 17 | 15 | 14 | 13 | 14 | 12 | 15 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | ESE 7 | ESE 7 | S 8 | SE 7 | ESE 7 | ESE 8 | ESE 6 | ESE 10 | E 9 | ESE 7 | ESE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 |
75 | 132 | 113 | 35 | 84 | 115 | 116 | 72 | 210 | 162 | 75 | 41 | 68 | 53 | 30 | 22 | 15 | 16 | 10 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | S 9 | S 12 | S 11 | S 11 | ESE 11 | ESE 10 | S 8 | S 8 | E 11 | E 10 | S 13 | S 11 | SSE 7 | S 5 | S 5 | S 5 | S 6 |
189 | 116 | 104 | 44 | 85 | 56 | 113 | 90 | 22 | 12 | 2 | 2 | 3 | 3 | 5 | 2 | 2 | 2 | 2 | |
Swell 3 Height (m) Direction Period (s) | SSE 6 | SSW 14 | SSW 13 | ESE 11 | E 9 | ESE 14 | S 10 | S 9 | S 15 | E 12 | — | S 14 | — | — | S 11 | SE 7 | SE 7 | S 9 | S 8 |
16 | 63 | 53 | 12 | 6 | 71 | 48 | 26 | 4 | 3 | — | 4 | — | — | 9 | 2 | 2 | 2 | 5 | |
Wind waves Height (m) Direction Period (s) | — | — | — | ESE 7 | E 6 | — | — | — | — | N 3 | — | ENE 4 | — | — | — | — | — | — | WNW 3 |
— | — | — | 141 | 30 | — | — | — | — | 3 | — | 23 | — | — | — | — | — | — | 3 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 37 | 36 | 37 | 73 | 0 | 1 | 0 | 72 | 2 | 2 | 46 | 0 | 0 | 3 | 218 | 135 | 218 | 208 |
Best forecast wave conditions in Newcastle | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











