Surf Forecasts:
Backdoor 4 surf forecast from 5 Jul 2026:
- Best quality surf: Sunday 5 Jul, 1PM (local time) - 11ft (3.5m), 11s period, S swell with offshore winds.
- Most powerful swell: Sunday 5 Jul, 7PM (local time) - 11ft (3.5m), 13s period, S swell with 4,051 kJ wave energy.
- Next surfable swell (1★+): Sunday 5 Jul, 1PM (local time) - 11ft (3.5m), 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 Sunday (Jul 05) at 1PM. The primary swell is predicted to be 3.5m and 11s period with a secondary swell of 0.3m and 8s. Another secondary swell of 0.3m and 8s 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 13s and forecast to arrive on Sunday (Jul 05) at 7PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Jul 11) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Sun 5th Jul) | 11ft (3.5m) 11s |
| Best Surf | 1PM (Sun 5th Jul) | 11ft (3.5m) 11s |
| Most Powerful | 7PM (Sun 5th Jul) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Backdoor 4 over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here with the lowdown on Backdoor 4.
We’ve got a massive swell train rolling in, and for the first few days, it’s all about size. Starting Sunday the 5th through Tuesday the 8th, we’re seeing solid 8ft to 12ft southerly and south-southeast swell. The wave energy is through the roof, over 3000 for most of it. But here’s the thing—it’s just too big for this reef. This is elite-level stuff only. The winds are offshore and clean, which would be perfect if it wasn’t a washing machine. If you’re not an expert, skip it.
Things ease up on Thursday the 9th. The swell drops to a much friendlier 6ft from the southeast, with a clean 10-second period. The water is sitting at 67°F, which is average for this time of year. Thursday afternoon, with a gentle offshore breeze and energy around 700, is your first real window.
Friday the 10th is the highlight of the first week. You’ve got 5ft to 6ft southeast swell, clean conditions with gentle offshore winds, and the energy is around 500. It’s not too big, the direction is right, and the wind is perfect. Expect company in the water because this is the one to be on.
From Saturday the 11th through Monday the 13th, the swell dies. We’re down to 4ft and smaller, with onshore north and northwest winds. It gets messy and weak. That’s a dry spell.
Then, around Wednesday the 15th, another massive pulse arrives. Wednesday morning gives us 7ft from the south, but with a short 8-second period, it’s lumpy. Thursday the 16th and Friday the 17th are the real monsters: 15ft to 18ft southerly groundswell, with energy numbers skyrocketing past 5000 and up to 10000. The period is 12 seconds, which is very long, so it’s heavy and powerful. That’s expert territory. Winds are light, but the size makes it dangerous and unpredictable. A week out, this is a big if.
After that, by Sunday the 19th, it settles into a beautiful 7ft to 6ft southeast groundswell with clean offshore winds. That’s your standout for the second week. Clean, punchy, and rideable.
For most of us, the call is Thursday the 9th afternoon and Friday the 10th. For the chargers, Sunday the 19th looks prime. The middle of next week is a write-off.
Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Sun morning. Very mild (max 16°C on Mon afternoon, min 13°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Wed morning. Very mild (max 16°C on Thu afternoon, min 11°C on Fri night). Winds decreasing (fresh winds from the SSW on Wed morning, calm by Thu night). | ||||||||||||||||||||
Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | |||||||||||||||
AM | 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) | S 12 | S 11 | S 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 11 | SE 11 | SE 11 | SSE 9 | SSE 11 | SE 9 | SE 9 | SE 10 | SE 9 | SE 10 | SE 9 | SE 9 | ESE 11 | ESE 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2884 | 1873 | 2541 | 1730 | 1658 | 1724 | 2000 | 2677 | 2058 | 1467 | 1138 | 954 | 678 | 693 | 612 | 599 | 634 | 433 | 238 | 280 | 250 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | off | off | off | off | off | cross-off | off | cross-off | off | off | cross | cross-off | off | cross-off | cross | cross | cross-on |
High Tide | 11:55AM1.14m | 11:35PM1.39m | 12:42PM1.19m | 00:21AM1.30m | 1:34PM1.25m | 1:18AM1.20m | 2:29PM1.33m | 2:25AM1.12m | 3:27PM1.43m | 3:41AM1.07m | 4:26PM1.53m | 4:57AM1.05m | 5:24PM1.64m | ||||||||
Low Tide | 5:25PM0.50m | 6:18AM0.20m | 6:22PM0.52m | 6:59AM0.22m | 7:29PM0.53m | 7:46AM0.24m | 8:44PM0.49m | 8:39AM0.27m | 10:00PM0.41m | 9:38AM0.29m | 11:12PM0.30m | 10:39AM0.30m | 00:15AM0.17m | ||||||||
 |  |  | | |  | | | | |  | | | | | |  |  | | | | |
 | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | 4:58 | — | — | 4:59 | — | — | 4:59 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — |
mm | 1 | 2 | 3 | 2 | 2 | 4 | 2 | 1 | 3 | 1 | — | 2 | 2 | 2 | 4 | 1 | — | — | — | — | — |
Temp °C | 14 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 14 | 15 | 16 | 14 | 14 | 15 | 13 | 14 | 15 | 15 |
Feels °C | 8 | 8 | 8 | 9 | 10 | 10 | 10 | 10 | 12 | 9 | 11 | 10 | 12 | 12 | 13 | 13 | 14 | 12 | 13 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | E 8 | S 14 | E 13 | E 14 | E 14 | E 12 | SE 14 | — | SE 11 | SE 11 | ESE 12 | SSE 11 | SE 9 | SE 9 | SE 10 | SE 9 | SE 10 | SE 9 | SE 9 | ESE 11 | ESE 10 |
| kJ | 11 | 1243 | 14 | 16 | 14 | 12 | 357 | — | 2058 | 1467 | 525 | 954 | 678 | 693 | 612 | 599 | 634 | 433 | 238 | 280 | 250 |
Swell 2 Height (m) Direction Period (s) | — | E 8 | — | E 14 | E 14 | — | — | — | S 16 | ESE 14 | — | ESE 11 | ESE 10 | ESE 10 | S 20 | S 15 | S 19 | ESE 14 | ESE 12 | SSE 9 | SSE 8 |
| kJ | — | 11 | — | 15 | 15 | — | — | — | 20 | 352 | — | 275 | 157 | 39 | 8 | 5 | 7 | 68 | 172 | 119 | 38 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | S 14 | S 18 | S 17 | S 20 | — | — | S 18 | S 16 | S 19 | S 15 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 4 | 6 | 6 | 8 | — | — | 6 | 5 | 7 | 4 |
Wind waves Height (m) Direction Period (s) | S 12 | S 11 | S 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 11 | — | — | SSE 9 | SSE 11 | — | — | — | — | — | — | — | — | — |
| kJ | 2884 | 1873 | 2541 | 1730 | 1658 | 1724 | 2000 | 2677 | — | — | 1138 | 846 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 135 | 285 | 285 | 248 | 176 | 1 | 0 | 52 | 1 | 0 | 45 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 |
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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