Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
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Backsides Surf Forecast
/ NSW – North Coast (46 breaks) / New South Wales (297 breaks) /
Surf Forecasts:
Backsides surfForecast / NSW – North Coast / Australia
12 Day Weather and Surf, issued 10 pm Saturday 13 Dec 2025 AEDTForecast update in hr min s Forecast update imminent
Backsides surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Backsides sea temperature is
23.7° C
(Which is slightly cooler than normal)Best Forecast Surf Conditions for Backsides this week:
The surf forecast for Backsides over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 14) at 11AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.9m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Backsides in the next 12 days are 2.1m 7s and forecast to arrive on Wednesday (Dec 17) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Monday (Dec 15) at 5AM.
| Wave Type | Time (AEDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sun 14th Dec) | 3ft (0.9m) 9s |
| Best Surf | 5AM (Mon 15th Dec) | 4.5ft (1.3m) 6s |
| Most Powerful | 5AM (Wed 17th Dec) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for Backsides over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 5mm), mostly falling on Mon night. Warm (max 27°C on Sun afternoon, min 21°C on Sat night). Mainly fresh winds. | Days 3-6 Weather Summary Light rain (total 8mm), mostly falling on Tue night. Warm (max 24°C on Fri afternoon, min 19°C on Thu night). Winds decreasing (fresh winds from the SE on Wed morning, calm by Fri morning). | |||||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 10 | 9 | 9 | 8 | 8 | 6 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 131 | 149 | 106 | 85 | 80 | 62 | 233 | 400 | 417 | 428 | 384 | 345 | 265 | 227 | 223 | 202 | 144 | 146 | 142 | 127 | 78 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- on | cross- off | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross | cross | cross- on | |
High Tide / height (m) | 5:22AM 1.07 | 4:48PM 1.00 | 6:11AM 1.18 | 5:40PM 0.96 | 6:54AM 1.30 | 6:30PM 0.95 | 7:33AM 1.41 | 7:18PM 0.95 | 8:11AM 1.50 | 8:04PM 0.95 | 8:48AM 1.57 | 8:48PM 0.95 | 9:24AM 1.62 | |||||||||
Low Tide / height (m) | 10:33PM 0.24 | 11:09AM 0.52 | 11:12PM 0.24 | 12:17PM 0.52 | 11:51PM 0.24 | 1:15PM 0.51 | 12:29AM 0.24 | 2:05PM 0.48 | 1:08AM 0.25 | 2:50PM 0.44 | 1:47AM 0.25 | 3:32PM 0.40 | 2:26AM 0.26 | 4:13PM 0.35 | ||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | ||||||||||||||||
| Sunrise | - | 5:39 | - | - | 5:41 | - | - | 5:41 | - | - | 5:41 | - | - | 5:41 | - | - | 5:41 | - | - | 5:43 | - | |
| Sunset | - | - | 7:37 | - | - | 7:38 | - | - | 7:39 | - | - | 7:39 | - | - | 7:40 | - | - | 7:40 | - | - | 7:42 | |
 |  |  |  | | |  |  | |  |  | |  |  | | |  | | | | | ||
Rain (mm) | - | - | - | - | - | - | 2 | 1 | 2 | 4 | 1 | - | 1 | 2 | - | - | - | - | - | - | - | |
| Temp. °C | 24 | 24 | 27 | 25 | 24 | 24 | 23 | 23 | 22 | 22 | 21 | 22 | 22 | 23 | 23 | 22 | 23 | 24 | 23 | 26 | 26 | |
| Feels °C (?) | 23 | 24 | 27 | 24 | 27 | 23 | 23 | 23 | 20 | 20 | 18 | 19 | 20 | 22 | 22 | 22 | 23 | 22 | 21 | 24 | 23 | |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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 Backsides 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.
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Information about the Backsides Surf forecast
The above surf forecast table for Backsides provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Backsides can be found by selecting the local surf guide option on the grey menu. Our Backsides 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 (Backsides) 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 Backsides 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.
Backsides is 5 km (3 miles) from Ballina. If you plan a holiday in North Coast - New South Wales, look for hotels and other accommodation in Ballina. Ballina has rooms for a wide range of budgets as well as car hire and transport links.
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