Surf Forecasts:
Backdoor 4 surf forecast from 19 Jul 2026:
- Best quality surf: Sunday 19 Jul, 10PM (local time) - 6.5ft (2.0m), 11s period, E swell with cross-offshore winds.
- Most powerful swell: Monday 20 Jul, 1AM (local time) - 6.5ft (2.0m), 11s period, E swell with 934 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 10PM (local time) - 6.5ft (2.0m), 11s 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 Sunday (Jul 19) at 10PM. The primary swell is predicted to be 2.0m and 11s period with a secondary swell of 0.7m and 13s. 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 2.0m 11s and forecast to arrive on Monday (Jul 20) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Thursday (Jul 23) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 19th Jul) | 6.5ft (2.0m) 11s |
| Best Surf | 10PM (Sun 19th Jul) | 6.5ft (2.0m) 11s |
| Most Powerful | 1AM (Mon 20th Jul) | 6.5ft (2.0m) 11s |
Table - best surf conditions forecast for Backdoor 4 over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the table for the next couple of weeks.
The first decent surf shows up on Sunday the 19th. We've got a solid 7ft swell rolling in from the east, with a 10-second period. The water temp is sitting at 66°, which is about what you'd expect for this time of year. The energy is moderate, coming in at 955. Conditions are looking clean with a cross-off wind, so it's a good start.
Monday morning the 20th is the standout. The swell drops a touch to 6ft from the ENE, but the period stretches to 11 seconds, giving it some real punch. The combined energy jumps to 1052, and the wind goes glassy – totally off. This is the pick of the first week. The waves will be clean and well-shaped, but at this size, it's one for the experienced crew. It's a very consistent break, so you won't be waiting long, and you can expect some company.
Monday afternoon gets a bit messy with a cross-on wind, so that glassy window is the one to hit.
Tuesday the 21st is a write-off, and conditions stay poor through Wednesday and Thursday as the swell drops right off. There's a four-day lull until Friday the 24th afternoon. The wind swings offshore and the swell builds to 5ft from the south. The energy is moderate at 572, and it'll be clean. Not a classic, but a solid session.
Looking further out, Sunday the 26th afternoon is a real highlight. The swell is back up to 6ft from the south, with a 10-second period. The energy is strong at 665, and we get clean offshore winds. This one is promising.
Now, for the last few days of July and into August, things get interesting but a bit wild. The first of August sees a massive 10ft south swell, with combined energy readings over 1500. That's some serious power. The winds are good, but the honest truth is, at this size, this break is only for the experts. It's too big for most, with a cross-off wind on Saturday afternoon and clean conditions. The same goes for the 2nd and 3rd of August – big, powerful south swells, but the size is intimidating. The risk is high, but if you're a seasoned charger, it's a monster on the cards.
To sum it up: the best windows are Monday morning the 20th for the glassy, clean conditions, and Sunday afternoon the 26th for the solid, clean south swell. The early August stuff is big and powerful, but only for the brave.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Wed morning, min 12°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Wed afternoon, min 7°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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 10 | E 11 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | S 8 | S 10 | S 10 | S 11 | S 12 | S 13 | S 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 818 | 934 | 862 | 763 | 501 | 416 | 356 | 201 | 226 | 193 | 121 | 96 | 71 | 354 | 455 | 543 | 466 | 411 | 563 | 615 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | cross-on | on | on | cross-on | on | cross | cross-off | cross | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross-off | cross-off |
High Tide | 00:01AM1.34m | 12:59PM1.28m | 00:51AM1.17m | 1:51PM1.29m | 1:47AM1.03m | 2:45PM1.31m | 2:53AM0.93m | 3:42PM1.32m | 4:06AM0.89m | 4:36PM1.36m | 5:13AM0.89m | 5:27PM1.40m | ||||||||
Low Tide | 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 | 9:37AM0.49m | 11:38PM0.44m | 10:34AM0.49m | 00:26AM0.38m | |||||||
 |  | | |  | | | | |  | | | | | | | | | | | |
 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — |
 | 5:06 | — | — | 5:06 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:08 | — | — | 5:09 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 14 | 15 | 15 | 15 | 16 | 15 | 19 | 18 | 17 | 18 | 17 | 10 | 13 | 14 | 10 | 18 | 17 | 14 |
Feels °C | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 16 | 14 | 13 | 12 | 10 | 3 | 8 | 11 | 4 | 13 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 11 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | S 8 | S 10 | S 10 | S 11 | S 12 | S 13 | S 12 |
| kJ | 818 | 934 | 862 | 763 | 501 | 416 | 356 | 201 | 226 | 193 | 121 | 96 | 71 | 354 | 455 | 543 | 466 | 411 | 563 | 615 |
Swell 2 Height (m) Direction Period (s) | 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 | ENE 8 | ENE 8 | S 18 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 125 | 162 | 181 | 178 | 84 | 56 | 53 | 31 | 17 | 19 | 20 | 8 | 8 | 45 | 28 | 28 | 163 | 13 | 13 | 6 |
Swell 3 Height (m) Direction Period (s) | S 8 | SE 16 | SE 15 | SE 15 | S 15 | S 16 | S 15 | S 14 | S 12 | NNW 3 | — | E 9 | SE 8 | SE 8 | SE 7 | E 7 | NE 8 | SSE 19 | — | — |
| kJ | 12 | 10 | 9 | 9 | 17 | 19 | 17 | 4 | 12 | 1 | — | 2 | 3 | 2 | 2 | 1 | 18 | 68 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NE 3 | NE 5 | NW 3 | — | WSW 3 | SSW 5 | S 6 | — | W 3 | — | — | W 4 | — | — |
| kJ | — | — | — | — | — | — | 3 | 26 | 6 | — | 2 | 19 | 82 | — | 3 | — | — | 6 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 46 | 2 | 2 | 112 | 2 | 0 | 0 | 2 | 2 | 15 | 0 | 0 | 0 | 2 | 2 | 46 | 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.
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