Backdoor 4 surfForecast / NSW – Newcastle / Australia

information circle16 Day Weather and Surf, issued 9 am Saturday 18 Apr 2026 AEST
Forecast update in hr  min  s Forecast update imminent
Backdoor 4 surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Backdoor 4 sea temperature is
22.1° C
(Which is normal for this time of year)

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 Saturday (Apr 18) at 7PM. The primary swell is predicted to be 3.0m and 12s period. 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 3.0m 13s and forecast to arrive on Monday (Apr 20) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Sat 18th Apr)10ft (3.0m) 12s
Best Surf 7PM (Sat 18th Apr)10ft (3.0m) 12s
Most Powerful 1AM (Mon 20th Apr)10ft (3.0m) 13s

Table - best surf conditions forecast for Backdoor 4 over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 19°C on Mon afternoon, min 13°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Tue night. Very mild (max 19°C on Tue morning, min 16°C on Tue night). Wind will be generally light.

Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
!
!
!
!
!
!
!
!
!
!
4
!
!
!
!
!
!
!
3
3
2
Swell
Height Map
Wave Height (m) & direction (?)
2.4
S
2.5
S
3
S
3
S
3
S
3
S
3
SSE
2.5
SSE
2.5
SSE
2.3
SSE
1.7
S
2.3
SSE
2.3
SE
2.4
SE
2.3
SE
2.4
SE
2.4
SE
2.2
SE
1.8
SE
1.6
SE
1.4
SE
Period(s) (?)101212121213121211101010101111121212111010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)11771631255922812165291424712047157411286321001101913221235147015211323743540356
Wind
(km/h)
10
SW
25
SSE
15
WSW
15
SSW
20
SSE
15
SW
20
SW
25
S
20
S
20
S
25
S
20
SSW
15
SSW
20
S
15
SSW
15
SW
20
S
15
SSW
15
SW
15
SE
5
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offcross-
off
cross-
off
offcross-
off
cross-
off
offoffoffoffoffcross-
off
offoffcross-
off
offoffcross-
off
cross-
off
off
High Tide
/ height (m)
8:51PM
1.73
9:23AM
1.29
9:35PM
1.74
10:17AM
1.20
10:24PM
1.71
11:15AM
1.10
11:18PM
1.64
12:22PM
1.02
12:20AM
1.55
1:39PM
0.99
1:29AM
1.47
2:58PM
1.02
2:43AM
1.41
Low Tide
/ height (m)
2:27PM
0.12
3:23AM
0.02
3:08PM
0.19
4:17AM
0.03
3:53PM
0.27
5:14AM
0.08
4:42PM
0.36
6:18AM
0.14
5:40PM
0.45
7:28AM
0.20
6:51PM
0.52
8:40AM
0.23
8:15PM
0.55
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Sunrise6:16--6:16--6:18--6:18--6:20--6:20--6:20--
Sunset-5:28--5:27--5:25--5:24--5:23--5:22--5:21-
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
rain showers
part cloud
part cloud
cloud
part cloud
part cloud
rain showers
clear
clear
clear
Rain (mm)
-----------1-----2---
Temp. °C181717181818181919191918191918191919212019
Feels °C (?)141214151515141515151514151515151517191818
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Quick surf report for Backdoor 4:

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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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