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Triangles Surf Forecast
/ NSW – Newcastle (55 breaks) / New South Wales (297 breaks) /
Surf Forecasts:
Triangles surfForecast / NSW – Newcastle / Australia
12 Day Weather and Surf, issued 9 am Monday 15 Sep 2025 AEST
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 Wednesday (Sep 17) at 7AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.1m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Triangles in the next 12 days are 1.1m 8s and forecast to arrive on Wednesday (Sep 17) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Thursday (Sep 18) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 17th Sep) | 3ft (0.9m) 8s |
| Best Surf | 7AM (Wed 17th Sep) | 3ft (0.9m) 8s |
| Most Powerful | 1AM (Wed 17th Sep) | 3.5ft (1.1m) 8s |
Table - best surf conditions forecast for Triangles over the next 12 days.
Short Range Forecast Mostly dry. Warm (max 25°C on Mon afternoon, min 13°C on Wed night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 21°C on Fri morning, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 6 | 10 | 5 | 7 | 7 | 8 | 8 | 7 | 7 | 7 | 7 | 4 | 7 | 3 | 5 | 6 | 6 | 8 | 7 | 7 | 7 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 9 | 8 | 22 | 37 | 37 | 140 | 57 | 37 | 20 | 13 | 12 | 33 | 22 | 5 | 16 | 26 | 28 | 15 | 20 | 13 | 14 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross | cross | cross | cross | cross- off | cross- on | off | glass | cross- on | cross- off | cross- on | cross- on | cross- off | off | cross | cross- off | cross- off | cross | off |
High Tide / height (m) | 2:33PM 1.43 | 3:49AM 0.94 | 3:49PM 1.44 | 5:00AM 1.00 | 4:55PM 1.47 | 5:54AM 1.09 | 5:49PM 1.51 | 6:36AM 1.18 | 6:34PM 1.52 | 7:12AM 1.26 | 7:14PM 1.51 | 7:46AM 1.34 | 7:50PM 1.47 | ||||||||
Low Tide / height (m) | 9:45PM 0.32 | 9:05AM 0.52 | 10:55PM 0.27 | 10:22AM 0.49 | 11:49PM 0.22 | 11:24AM 0.42 | 12:31AM 0.18 | 12:16PM 0.35 | 1:07AM 0.15 | 1:00PM 0.30 | 1:38AM 0.14 | 1:41PM 0.26 | 2:07AM 0.15 | ||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||
| Sunrise | 5:54 | - | - | 5:52 | - | - | 5:50 | - | - | 5:50 | - | - | 5:48 | - | - | 5:47 | - | - | 5:46 | - | - |
| Sunset | - | 5:44 | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | - | - | 5:46 | - | - | 5:47 | - | - | 5:47 | - |
 | |  |  | | |  | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 25 | 21 | 24 | 24 | 22 | 22 | 21 | 17 | 17 | 17 | 15 | 21 | 21 | 19 | 21 | 20 | 15 | 21 | 19 | 14 |
| Feels °C (?) | 20 | 21 | 18 | 19 | 19 | 19 | 21 | 18 | 14 | 13 | 13 | 11 | 17 | 16 | 16 | 17 | 17 | 11 | 17 | 15 | 9 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for NSW - Newcastle
The wind is still cross-on at Triangles (light winds from the NE at Norah Head Automatic Weather Station 1 km from Triangles). 0.4m 5s windswell from the ENE with a 0.2m 10s swell from the E. 2 swells combining to make bigger set waves.
1 h 14 min ago
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Triangles surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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