Triangles surfForecast / NSW – Newcastle / Australia

information circle16 Day Weather and Surf, issued 9 am Saturday 11 Apr 2026 AEST
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
23.3° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Triangles this week:

The surf forecast for Triangles over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Apr 11) at 7PM. The primary swell is predicted to be 1.0m and 14s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Triangles in the next 16 days are 1.8m 15s and forecast to arrive on Monday (Apr 13) at 7AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 11s period and expected on Saturday (Apr 18) at 7AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Sat 11th Apr)3.5ft (1.0m) 14s
Best Surf 1AM (Mon 13th Apr)5ft (1.6m) 14s
Most Powerful 7AM (Mon 13th Apr)6ft (1.8m) 15s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 23°C on Sat morning, min 12°C on Sun night). Winds increasing (calm on Sat afternoon, fresh winds from the SW by Sun afternoon).

Days 3-6 Weather Summary Mostly dry. Warm (max 23°C on Thu morning, min 15°C on Tue night). Wind will be generally light.

Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
1
3
2
3
4
4
3
2
2
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.9
ENE
0.9
E
1.2
E
1.2
E
1.3
E
1.6
E
1.7
E
1.5
E
1.1
E
0.8
E
0.6
E
0.4
E
0.3
E
0.3
E
0.2
E
0.3
NE
0.2
E
0.1
NE
0.2
SSE
0.7
S
0.1
NE
Period(s) (?)1313141313141414131312121111105105131010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2772805454955951030119690642320910643222184811704
Wind
(km/h)
20
WSW
10
SE
20
WSW
25
WSW
25
SW
20
WSW
15
SW
5
NE
10
WNW
5
WSW
15
E
10
WNW
5
W
15
E
5
SW
10
WNW
15
E
15
W
20
WSW
25
SSE
10
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcrossoffoffoffoffoffglasscross-
off
glasscross-
on
cross-
off
glasscross-
on
offcross-
off
cross-
on
cross-
off
offcrossoff
High Tide
/ height (m)
4:00PM
0.96
3:40AM
1.28
4:52PM
1.06
4:35AM
1.33
5:35PM
1.19
5:25AM
1.38
6:14PM
1.32
6:12AM
1.42
6:51PM
1.46
6:58AM
1.44
7:30PM
1.58
7:45AM
1.42
8:09PM
1.68
Low Tide
/ height (m)
9:14PM
0.61
10:36AM
0.33
10:22PM
0.55
11:18AM
0.25
11:19PM
0.45
11:56AM
0.17
12:09AM
0.34
12:32PM
0.11
12:57AM
0.23
1:10PM
0.08
1:45AM
0.13
1:48PM
0.08
2:33AM
0.05
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Sunrise6:11--6:11--6:13--6:13--6:15--6:15--6:16--
Sunset-5:37--5:36--5:34--5:32--5:31--5:30--5:30-
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
Rain (mm)
---------------------
Temp. °C232317202215181917192019212020232221242119
Feels °C (?)20201214169141715171718191820211918201617
  • 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 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 16 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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