
Surf Forecasts:
Backdoor 4 surf forecast from 17 Jul 2026:
- Best quality surf: Sunday 19 Jul, 1AM (local time) - 7ft (2.1m), 12s period, E swell with cross-offshore winds.
- Most powerful swell: Sunday 19 Jul, 4AM (local time) - 8ft (2.4m), 11s period, E swell with 1,388 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 7PM (local time) - 3.5ft (1.0m), 6s period with E 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 Friday (Jul 17) at 7PM. The primary swell is predicted to be 1.0m and 6s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Backdoor 4 in the next 16 days are 2.4m 11s and forecast to arrive on Sunday (Jul 19) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Thursday (Jul 23) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Fri 17th Jul) | 3.5ft (1.0m) 6s |
| Best Surf | 1AM (Sun 19th Jul) | 7ft (2.1m) 12s |
| Most Powerful | 4AM (Sun 19th Jul) | 8ft (2.4m) 11s |
Table - best surf conditions forecast for Backdoor 4 over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin’ for Backdoor 4 over the next couple weeks.
Right off the bat, we’ve got a bit of a slow start. The first real window of surf that’s worth paddling out for doesn’t show up until the morning of Sunday, July 19th, but that’s a tricky one. The swell is coming in at 7ft from the east, with a period of 10 seconds, and the combined energy is a serious 1083 – that’s a lot of water moving. Thing is, the forecast says it’s actually too big for this break, so unless you’re a seasoned charger looking for a real handful, I’d give it a miss. The wind is a moderate cross-off, so it won’t be a total mess, but it’s not the call.
Now, *Monday, July 20th* morning – that’s where it gets interesting. The swell drops to a more manageable 5ft, still from the east-northeast, with a solid 10-second period. The combined energy is still strong at 726. But the real kicker? The wind is glassy – a light 5 km/h from the north-northeast. That’s as clean as it gets. The water temp is sitting at 65°, which is pretty much spot on for this time of year, so no surprises there. If you can get out that Monday morning, that’s the standout of the whole forecast. The afternoon turns choppy with a cross-on breeze, so make it a morning mission.
After that, things get ordinary again. The rest of the week into the weekend is a mix of poor conditions and marginal surf. We get a little bump on Thursday, July 23rd afternoon – a 5ft south swell at 7 seconds, period is a bit short, but with a light cross-off breeze it’ll be clean. It’s a decent option, but nothing to write home about.
Saturday, July 25th morning looks promising again for a brief moment – 4ft south swell, 10-second period, and glassy winds from the north-northwest. That’s another clean window, but it’s small. The energy is moderate at 373. The afternoon gets ruined by a cross-on breeze, so again, go early.
Then we hit a real dead zone. From Sunday, July 26th right through to Tuesday, July 28th, the surf is tiny – under 3ft – and the winds are all over the place. Not worth your time.
Wednesday, July 29th morning throws a 8ft south swell our way, combined energy of 1078, but the wind is a moderate cross-on from the northwest, and the forecast says poor conditions. That’s a messy, blown-out lump. Hard pass.
The same story continues for the end of July and into August 1st – we see some size (8ft on the 31st morning – that’s big, expert-only stuff) but the wind is onshore and strong, up to 30 km/h. It’s just not going to be a fun paddle. The final session on Saturday, August 1st afternoon has a 4ft south swell with a clean cross-off breeze, but it’s marginal and the energy is weak.
So, bottom line: the one true standout is Monday morning, July 20th – glassy conditions, solid east-northeast swell, and clean lines. After that, Saturday morning the 25th is a good backup. The rest is a lot of waiting and watching.
Stay frothy,
Rusty
Short Range ForecastSome drizzle, heaviest during Fri night. Very mild (max 17°C on Fri night, min 14°C on Mon morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Wed morning, min 11°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
PM | 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) | E 6 | S 11 | ESE 6 | ESE 7 | E 12 | E 11 | E 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | S 8 |
Wave Graph | ||||||||||||||||||||
84 | 110 | 140 | 222 | 1166 | 1086 | 900 | 784 | 555 | 482 | 416 | 363 | 356 | 253 | 149 | 121 | 94 | 94 | 64 | 185 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | on | glassy | cross | cross-on | cross | cross | cross-off | cross-off | cross-off | cross |
High Tide | 10:29PM1.67m | 11:20AM1.25m | 11:15PM1.51m | 12:09PM1.27m | 00:01AM1.34m | 12:59PM1.28m | 00:51AM1.17m | 1:51PM1.29m | 1:47AM1.03m | 2:45PM1.31m | 2:53AM0.93m | 3:42PM1.32m | ||||||||
Low Tide | 4:07PM0.28m | 5:10AM0.04m | 5:01PM0.35m | 5:51AM0.13m | 5:58PM0.42m | 6:30AM0.22m | 7:01PM0.48m | 7:10AM0.31m | 8:11PM0.53m | 7:53AM0.39m | 9:26PM0.53m | 8:42AM0.45m | 10:38PM0.50m | |||||||
— | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | |
5:05 | — | — | 5:05 | — | — | 5:06 | — | — | 5:06 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 16 | 16 | 18 | 18 | 16 | 15 | 15 | 15 |
Feels °C | 14 | 13 | 12 | 12 | 12 | 13 | 13 | 14 | 13 | 12 | 13 | 13 | 14 | 14 | 16 | 15 | 13 | 13 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | E 6 | E 6 | S 10 | S 10 | E 12 | E 11 | E 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | S 8 |
84 | 86 | 49 | 46 | 1166 | 1086 | 900 | 784 | 555 | 482 | 416 | 363 | 356 | 253 | 149 | 121 | 94 | 94 | 64 | 185 | |
Swell 2 Height (m) Direction Period (s) | S 6 | S 11 | S 21 | S 20 | S 9 | S 17 | S 16 | S 13 | S 12 | S 12 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 11 | S 10 | S 10 | ENE 9 |
27 | 110 | 35 | 32 | 25 | 95 | 125 | 162 | 181 | 178 | 114 | 81 | 52 | 31 | 30 | 31 | 20 | 8 | 8 | 62 | |
Swell 3 Height (m) Direction Period (s) | S 8 | S 21 | — | S 15 | SSE 19 | S 8 | S 8 | SE 16 | SE 15 | SE 15 | SE 14 | S 16 | S 15 | S 14 | S 12 | S 13 | — | E 5 | — | S 14 |
21 | 9 | — | 5 | 69 | 12 | 12 | 10 | 9 | 9 | 8 | 20 | 17 | 4 | 3 | 3 | — | 1 | — | 4 | |
Wind waves Height (m) Direction Period (s) | — | — | ESE 6 | ESE 7 | — | — | — | — | — | — | — | — | — | NNE 4 | — | — | SSW 4 | SSW 4 | S 4 | — |
— | — | 140 | 222 | — | — | — | — | — | — | — | — | — | 10 | — | — | 5 | 6 | 20 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 123 | 135 | 52 | 52 | 0 | 0 | 0 | 91 | 2 | 2 | 136 | 0 | 0 | 37 | 0 | 0 | 0 |
Best forecast wave conditions in Newcastle | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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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.










