- Forecast
- Maps
- Live
- Weather State
- Spot Information
Backdoors Surf Forecast
/ SA – Nullarbor (9 breaks) / South Australia (91 breaks) /
Backdoors surfForecast / SA – Nullarbor / Australia
12 Day Weather and Surf, issued 8 pm Monday 19 May 2025 ACST
Best Forecast Surf Conditions for Backdoors this week:
The surf forecast for Backdoors over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (May 20) at 3AM. The primary swell is predicted to be 2ft and 12s period with a secondary swell of 0ft and 20s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Backdoors in the next 12 days are 7ft 19s and forecast to arrive on Thursday (May 22) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3ft 4s period and expected on Saturday (May 24) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 20th May) | 2ft (0.6m) 12s |
| Best Surf | 9PM (Thu 22nd May) | 7ft (2.1m) 19s |
| Most Powerful | 9PM (Thu 22nd May) | 7ft (2.1m) 19s |
Table - best surf conditions forecast for Backdoors over the next 12 days.
Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Sat 31 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | 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 (ft) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 17 | 16 | 14 | 14 | 24 | 21 | 19 | 18 | 17 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 11 | 10 | 15 | 14 | 14 | 15 | 14 | 14 | 14 | 13 | 12 | 11 | 12 | 15 | 15 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 114 | 71 | 50 | 53 | 803 | 1187 | 1063 | 793 | 2153 | 3219 | 2042 | 1484 | 1001 | 606 | 1024 | 2031 | 1941 | 2168 | 1468 | 1278 | 534 | 296 | 784 | 661 | 1034 | 1396 | 1220 | 852 | 532 | 394 | 220 | 130 | 94 | 50 | 109 | 102 |
Wind (mph) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- on | glass | cross- on | cross- on | cross- on | cross- off | cross- on | cross- off | cross- off | cross | off | cross- off | cross- off | cross | cross | cross- on | on | on | on | cross- on | glass | cross- on | cross | cross | cross | cross | cross- off | cross | cross | cross- off | cross | cross- off | cross- off | cross |
High Tide / height (ft) | 4:38PM 2.89 | 12:54PM 2.13 | 8:52PM 2.76 | 10:48AM 2.59 | 10:05PM 2.85 | 10:54AM 3.18 | 10:50PM 2.85 | 11:14AM 3.77 | 11:24PM 2.72 | 11:38AM 4.27 | 11:50PM 2.49 | 12:03PM 4.59 | 12:08AM 2.26 | 12:28PM 4.72 | 12:17AM 2.13 | 12:51PM 4.69 | 12:23AM 2.1 | 1:13PM 4.49 | 12:29AM 2.2 | 1:34PM 4.23 | 12:41AM 2.3 | 1:53PM 3.94 | ||||||||||||||
Low Tide / height (ft) | 7:13AM 1.18 | 4:30AM 1.21 | 2:10PM 2.13 | 4:15AM 1.02 | 4:17PM 1.54 | 4:28AM 0.82 | 5:04PM 1.02 | 4:44AM 0.72 | 5:44PM 0.62 | 5:00AM 0.59 | 6:21PM 0.43 | 5:15AM 0.46 | 6:53PM 0.46 | 5:30AM 0.3 | 7:21PM 0.62 | 5:45AM 0.16 | 7:42PM 0.89 | 6:02AM 0.07 | 7:57PM 1.15 | 6:22AM 0.07 | 8:09PM 1.35 | 6:43AM 0.2 | ||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Sat 31 | |||||||||||||||||||||||||
| Sunrise | - | 7:22 | - | - | 7:22 | - | - | 7:22 | - | - | 7:24 | - | - | 7:24 | - | - | 7:24 | - | - | 7:26 | - | - | 7:26 | - | - | 7:26 | - | - | 7:28 | - | - | 7:28 | - | - | 7:28 | - |
| Sunset | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | - | - | 5:44 | - | - | 5:44 | - | - | 5:43 | - | - | 5:43 | - | - | 5:43 | - | - | 5:42 | - | - | 5:42 | - | - | 5:42 | - | - | 5:40 |
 |  | | |  | |  | | | | | | | |  |  |  | | | | | | | | | | | | | |  | | | | | | |
Rain (in) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.0 | 0.2 | 0.1 | 0.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °F | 61 | 61 | 64 | 61 | 59 | 61 | 61 | 59 | 59 | 57 | 64 | 66 | 63 | 70 | 73 | 63 | 59 | 61 | 61 | 63 | 61 | 61 | 59 | 61 | 59 | 57 | 59 | 61 | 59 | 61 | 61 | 61 | 61 | 61 | 61 | 61 |
| Feels °F (?) | 52 | 50 | 55 | 55 | 55 | 55 | 54 | 55 | 54 | 52 | 55 | 59 | 57 | 55 | 61 | 50 | 41 | 45 | 46 | 54 | 52 | 57 | 57 | 55 | 54 | 50 | 52 | 54 | 52 | 54 | 54 | 54 | 54 | 54 | 55 | 52 |
Short Range Forecast: Mostly dry. Very mild (max 64°F on Tue afternoon, min 54°F on Mon night). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 0.3in), mostly falling on Sun morning. Warm (max 73°F on Sat afternoon, min 55°F on Thu night). Winds increasing (light winds from the SSW on Fri afternoon, strong winds from the WSW by Sun afternoon). | Days 6-9 Weather Summary Some drizzle, heaviest during Sun night. Very mild (max 63°F on Mon morning, min 55°F on Wed morning). Winds decreasing (fresh winds from the SW on Sun night, calm by Mon night). | Long Range Forecast: Mostly dry. Very mild (max 61°F on Wed night, min 55°F on Sat morning). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Join to view 12 day and hourly surf forecasts
- Map Icons:
Break
Live Wave Height (ft)
Live Wind Speed (mph)
Surf Rating (10 Max)
Ocean Swells (ft)- Wind Speed (mph)
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 Backdoors 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 Backdoors Surf forecast
The above surf forecast table for Backdoors provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Backdoors can be found by selecting the local surf guide option on the grey menu. Our Backdoors 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 (Backdoors) 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 Backdoors 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.
Are you planning a holiday in Nullarbor? If you are looking for accommodation near Backdoors, camping, hotels and holiday cottages in Nullarbor, consider staying in Thevenard which is 64 km (40 miles) away.
Nearest