Triangles surfForecast / NSW – Newcastle / Australia

information circle12 Day Weather and Surf, issued 10 pm Wednesday 19 Nov 2025 AEDT
Forecast update in hr  min  s Forecast update imminent
Triangles surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Triangles sea temperature is
21.3° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Triangles this week:

The surf forecast for Triangles over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Nov 20) at 5AM. The primary swell is predicted to be 1.5m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Triangles in the next 12 days are 2.5m 8s and forecast to arrive on Tuesday (Nov 25) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Friday (Nov 21) at 5AM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 20th Nov)5ft (1.5m) 8s
Best Surf11PM (Tue 25th Nov)7.5ft (2.3m) 8s
Most Powerful 8PM (Tue 25th Nov)8ft (2.5m) 8s

Table - best surf conditions forecast for Triangles over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 10mm), heaviest on Thu night. Warm (max 21°C on Wed night, min 18°C on Thu night). Mainly fresh winds.

Days 3-6 Weather Summary Heavy rain (total 20mm), heaviest during Sun morning. Warm (max 22°C on Tue afternoon, min 18°C on Sun night). Winds increasing (calm on Sun morning, fresh winds from the NE by Tue afternoon).

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wed
26
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
!
0
0
0
0
1
0
0
0
1
2
1
1
0
0
3
0
0
!
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2.3
NE
1.1
ENE
0.9
ENE
0.9
ENE
0.5
E
1.9
SSE
1.7
SE
1.1
E
1
E
0.9
E
0.8
E
0.8
E
1.6
E
1.3
ENE
1.2
ENE
2
ENE
1.8
ENE
2.5
ENE
2.1
ENE
1.6
ENE
2.3
NE
Period(s) (?)787712771111111010788887887
Wave
Graph
(?)Metric surfscale
Energy kJ (?)585138848672330263287233182128125275223155527414726575338471
Wind
(km/h)
15
NNW
15
SE
25
S
30
S
20
S
25
SSE
20
SE
20
SE
25
SE
5
ESE
0
NE
10
SE
20
SSW
15
SSE
20
SE
5
SSW
15
ENE
30
NE
15
NW
20
NNW
15
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
off
cross-
off
cross-
off
crosscrosscrosscross-
on
cross-
on
glasscross-
on
cross-
off
crosscross-
on
glassononcross-
off
crosscross-
on
High Tide
/ height (m)
8:40PM
1.10
8:44AM
1.57
9:19PM
1.08
9:18AM
1.58
9:57PM
1.05
9:54AM
1.56
10:36PM
1.02
10:31AM
1.54
11:18PM
0.99
11:10AM
1.50
12:04AM
0.97
11:51AM
1.45
12:56AM
0.96
12:37PM
1.40
Low Tide
/ height (m)
2:14AM
0.34
3:27PM
0.20
2:47AM
0.36
4:05PM
0.20
3:21AM
0.39
4:44PM
0.22
3:57AM
0.42
5:25PM
0.24
4:34AM
0.46
6:08PM
0.27
5:15AM
0.50
6:53PM
0.28
6:04AM
0.55
7:42PM
0.28
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wed
26
Sunrise-5:41--5:39--5:39--5:39--5:39--5:39--5:37-
Sunset--7:37--7:37--7:38--7:39--7:40--7:42--7:43
clear
cloud
cloud
light rain
light rain
light rain
light rain
rain showers
part cloud
light rain
heavy rain
rain showers
part cloud
clear
part cloud
part cloud
clear
clear
rain showers
cloud
cloud
Rain (mm)
---42211-5123------2--
Temp. °C212121191919192020201920202021202122232727
Feels °C (?)172119191716161817192121201920202020232525
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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Information about the Triangles Surf forecast

The above surf forecast table for Triangles provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Triangles can be found by selecting the local surf guide option on the grey menu. Our Triangles 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 (Triangles) 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 Triangles 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.

Triangles is 12 km (7 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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