Backdoor 4 surfForecast / NSW – Newcastle / Australia

information circle16 Day Weather and Surf, issued 9 am Thursday 21 May 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
20.8° 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 Thursday (May 21) at 4PM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 1.0m and 10s. 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 12s and forecast to arrive on Sunday (May 24) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (May 28) at 10AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Thu 21st May)10ft (3.0m) 9s
Best Surf 4PM (Thu 21st May)10ft (3.0m) 9s
Most Powerful 1PM (Sun 24th May)10ft (3.0m) 12s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 11mm), heaviest on Sat morning. Warm (max 20°C on Sat afternoon, min 16°C on Thu night). Winds decreasing (fresh winds from the SSW on Thu morning, light winds from the E by Sat night).

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Sun night. Warm (max 20°C on Sun morning, min 15°C on Tue night). Wind will be generally light.

Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
3
3
2
2
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
S
9
3
S
9
2.3
SSE
8
2.3
SSE
8
2.5
SE
10
2.5
SE
10
3
ESE
11
3
ESE
11
2.5
E
11
3
E
12
3
E
12
2.5
E
11
2.4
E
11
2.3
E
11
2.1
E
11
1.9
E
11
1.9
E
11
1.8
E
12
1.6
E
11
1.5
E
11
1.4
E
11
Wave Graph
Metric surfscale
Energy kJ
1533
1233
654
623
1370
1478
1908
1847
1672
2277
2239
1587
1388
1300
1095
882
898
880
628
526
451
Wind (km/h)
35
SSW
35
SSW
25
S
30
S
30
SSE
25
SSE
20
SSE
15
ESE
15
ESE
15
E
10
SE
15
SW
15
WSW
15
S
15
SW
10
WSW
0
SE
5
NW
5
NW
15
N
10
WNW
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
off
cross-off
cross-off
glassy
cross-on
cross-on
on
cross
High Tide
12:17PM1.06m
00:05AM1.59m
1:24PM1.06m
1:07AM1.47m
2:31PM1.11m
2:12AM1.35m
3:32PM1.18m
3:15AM1.25m
4:23PM1.27m
4:15AM1.18m
5:08PM1.36m
5:10AM1.12m
5:47PM1.43m
Low Tide
5:33PM0.45m
7:09AM0.13m
6:42PM0.51m
8:07AM0.18m
7:59PM0.54m
9:01AM0.22m
9:17PM0.53m
9:49AM0.25m
10:27PM0.49m
10:32AM0.28m
11:27PM0.43m
11:10AM0.31m
00:17AM0.37m
part cloud
rain showers
light rain
rain showers
rain showers
cloud
rain showers
rain showers
cloud
clear
part cloud
rain showers
part cloud
part cloud
rain showers
thunderstorm
part cloud
rain showers
light rain
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:41
6:41
6:43
6:43
6:43
6:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
4:59
4:58
4:58
4:57
4:57
4:55
4:55
1
1
2
1
5
1
2
2
1
1
1
2
1
Temp °C
17
18
17
18
18
18
19
20
20
20
19
18
19
19
18
17
18
17
18
19
16
11
12
13
13
13
14
17
18
17
18
18
18
19
18
18
18
19
18
17
17
14
Swell 1
Height (m)
Direction
Period (s)
1.1
E
10
1
E
10
0.9
E
10
1
E
10
0.3
S
13
2.5
SE
10
3
ESE
11
3
ESE
11
2.5
E
11
3
E
12
3
E
12
2.5
E
11
2.4
E
11
2.3
E
11
2.1
E
11
1.9
E
11
1.9
E
11
1.8
E
12
1.6
E
11
1.5
E
11
1.4
E
11
Energy kJ
250
198
151
186
31
1478
1908
1847
1672
2277
2239
1587
1388
1300
1095
882
898
880
628
526
451
Swell 2
Height (m)
Direction
Period (s)
0.1
S
16
0.2
S
15
0.1
S
21
0.2
S
17
0.1
S
15
0.1
S
13
0.2
S
12
0.2
S
11
0.3
S
16
0.5
S
14
0.5
S
12
0.5
S
12
0.4
S
11
0.3
S
16
0.3
S
10
0.2
S
13
Energy kJ
5
17
9
24
4
4
11
9
44
97
73
66
38
48
18
14
Swell 3
Height (m)
Direction
Period (s)
0.1
S
14
0.1
S
17
0.2
S
10
0.2
S
19
0.3
S
11
0.3
S
15
0.2
S
10
Energy kJ
4
6
8
29
20
40
8
Wind waves
Height (m)
Direction
Period (s)
3
S
9
3
S
9
2.3
SSE
8
2.3
SSE
8
2.5
SE
10
0.5
SSW
8
Energy kJ
1533
1233
654
623
1370
38
Nearest Offshore or Glassy
Rating
(10 max)
2
1
3
1
3
3
2
2
2
2
4
4
4
4
3
3
3
3
3
3
2
Distance (km)
141
141
135
141
141
176
68
68
68
68
0
0
0
0
0
0
0
2
2
3
0
Best forecast wave conditions in Newcastle
Rating
(10 max)
4
4
4
4
4
3
3
3
3
3
3
Best forecast wave conditions in Australia
Rating
(10 max)
4
4
4
4
7
5
4
4
7
7
4
4
4
4
4
4
4
3
3
3
3
Header Global
Rating
(10 max)
5
5
5
4
7
6
6
7
8
7
5
5
4
4
4
5
5
5
5
5
5
  • 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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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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