Triangles surfForecast / NSW – Newcastle / Australia

information circle12 Day Weather and Surf, issued 4 pm Sunday 21 Dec 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
23.2° 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 Sunday (Dec 21) at 11PM. The primary swell is predicted to be 1.6m and 7s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Triangles in the next 12 days are 1.4m 9s and forecast to arrive on Saturday (Dec 27) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 10s period and expected on Thursday (Dec 25) at 11PM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sun 21st Dec)5ft (1.6m) 7s
Best Surf11PM (Sun 21st Dec)5ft (1.6m) 7s
Most Powerful11PM (Sat 27th Dec)4.5ft (1.4m) 9s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 6mm), mostly falling on Mon afternoon. Warm (max 28°C on Sun night, min 19°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Thu night. Warm (max 22°C on Wed afternoon, min 17°C on Thu night). Winds decreasing (fresh winds from the NE on Wed afternoon, light winds from the S by Fri night).

Sun
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
2
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
Swell
Height Map
Wave Height (m) & direction (?)
1.6
NE
1.5
ENE
1.2
NE
0.9
NE
1.1
E
0.7
E
0.7
E
0.4
NE
0.4
ENE
1
ENE
0.9
ENE
0.4
NE
0.3
NE
0.2
ENE
0.2
E
0.2
E
0.1
NE
0.1
NE
0.1
NE
1.4
SSE
1.3
SSE
Period(s) (?)5899665764661399913131399
Wave
Graph
(?)Metric surfscale
Energy kJ (?)13331524710780302511163449828877766333286
Wind
(km/h)
15
E
10
N
10
WSW
20
E
15
S
15
E
20
ESE
15
SE
10
ENE
30
NE
25
SSW
20
SSE
30
SSE
25
SSE
15
SSE
15
SSE
10
SE
15
SE
15
ESE
5
ESE
10
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncrossoffoncross-
off
cross-
on
cross-
on
crossononcross-
off
crosscrosscrosscrosscrosscrosscrosscross-
on
glasscross-
on
High Tide
/ height (m)
10:22PM
1.03
10:16AM
1.60
11:02PM
1.03
10:53AM
1.58
11:45PM
1.05
11:31AM
1.54
12:30AM
1.07
12:11PM
1.48
1:20AM
1.11
12:57PM
1.40
2:14AM
1.17
1:50PM
1.31
3:11AM
1.26
Low Tide
/ height (m)
4:31PM
0.18
3:42AM
0.39
5:08PM
0.18
4:21AM
0.41
5:46PM
0.18
5:03AM
0.44
6:24PM
0.18
5:50AM
0.48
7:04PM
0.18
6:45AM
0.52
7:46PM
0.18
7:50AM
0.55
8:33PM
0.20
9:06AM
0.53
Sun
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunrise--5:41--5:41--5:41--5:41--5:43--5:43--5:43
Sunset8:01--8:01--8:02--8:02--8:02--8:04--8:04--
part cloud
cloud
part cloud
rain showers
light rain
part cloud
clear
rain showers
part cloud
clear
part cloud
part cloud
part cloud
rain showers
cloud
clear
part cloud
clear
clear
clear
part cloud
Rain (mm)
---32--1-----1-------
Temp. °C262828232122222221222220191818181918191920
Feels °C (?)252729242022212022202018151214151616171719
  • 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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