Surf Forecasts:
Otherside of the Moon surf forecast from 5 Aug 2026:
- Best quality surf: Saturday 8 Aug, 5PM (local time) - 18ft (5.5m), 17s period, WSW swell with cross-onshore winds.
- Most powerful swell: Tuesday 11 Aug, 2AM (local time) - 20ft (6.0m), 17s period, WSW swell with 21,273 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 5PM (local time) - 18ft (5.5m), 17s period with WSW swell.
Best Forecast Surf Conditions for Otherside of the Moon this week:
The surf forecast for Otherside of the Moon over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 08) at 5PM. The primary swell is predicted to be 5.5m and 17s period with a secondary swell of 4.0m and 16s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Otherside of the Moon in the next 16 days are 6.0m 17s and forecast to arrive on Tuesday (Aug 11) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sat 8th Aug) | 18ft (5.5m) 17s |
| Best Surf | 5PM (Sat 8th Aug) | 18ft (5.5m) 17s |
| Most Powerful | 2AM (Tue 11th Aug) | 20ft (6.0m) 17s |
Table - best surf conditions forecast for Otherside of the Moon over the next 16 days.
The Lowdown
Alright, Rusty here, and I’ve got the lowdown for the coming weeks. The main player is a spot called Otherside of the Moon, a reef break that really only works when the swell direction is from the WSW. Don't get too excited yet, because the first week or so is a write-off.
The pattern right now is stubborn onshore and cross-shore wind, smashing up an otherwise solid, long-period groundswell. This break is exposed and it's catching heaps of swell, but until that wind swings around, it’s just a messy, blown-out mess in the water. For most of the first week, the wind is a hammer, so don't bother paddling out.
The first real glimmer of hope comes on Wednesday, August 12. The wind finally plays ball in the morning with a gentle cross-off breeze from the NNE. You're looking at clean 10 ft surf with a very long 15-second period. The energy is still moderate (4334), but the conditions are finally clean. It is a bit sizey at 10 ft though, so this is one for experienced surfers only on a wave that size at this break.
Then we get another good window on Thursday, August 13. Morning session is the pick with NNE winds keeping it clean, and the swell is still a solid 10 ft. The period is even longer, hitting 20 seconds, which brings super juicy energy (6815). It’s a groundswell of the highest order, so those set waves will have real push, but the wait between them will be longer.
The absolute standout, the one to circle on the calendar, comes later on Thursday, August 20. This is a cracker. The morning has a moderate offshore breeze from the ENE at 12 mph keeping the 12 ft swell clean. But the real magic is the afternoon session. Glassy conditions from the west with a slight air. The swell is still 12 ft from the WSW with a 16-second period and moderate wave energy (6841). For a reef break with offshore wind and near-glassy conditions, this is as good as it gets. The water temperature is 67°, which is a touch warmer than usual for this time of year, making the wait in the lineup that much more comfortable.
Bottom line: The first 10 days are a washout with brutal winds. Then we get a few clean windows for experienced surfers in the middle of the second week, but the true gold is waiting on the afternoon of Thursday, August 20 when everything lines up.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Thu afternoon. Very mild (max 18°C on Thu morning, min 10°C on Sat morning). Winds increasing (light winds from the WNW on Wed afternoon, near gales from the WSW by Fri night). | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Sat afternoon. Very mild (max 16°C on Sun afternoon, min 12°C on Sat afternoon). Winds increasing (moderate winds from the WSW on Sun morning, near gales from the SW by Mon afternoon). | |||||||||||||||||||
Wed 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 11 | WSW 15 | WSW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 11 | WSW 14 | WSW 17 | WSW 17 | WSW 16 | WSW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 6702 | 6345 | 4986 | 5326 | 5163 | 4919 | 4495 | 5581 | 11789 | 15064 | 12642 | 7009 | 4736 | 4619 | 4470 | 7511 | 21273 | 12796 | 8828 | 5747 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:21AM0.59m | 4:32AM0.65m | 5:41AM0.71m | 6:43AM0.76m | 7:39AM0.80m | 8:30AM0.81m | ||||||||||||||
Low Tide | 3:32PM0.23m | 2:52PM0.14m | 3:11PM0.05m | 3:43PM-0.02m | 4:20PM-0.06m | 4:58PM-0.07m | 5:36PM-0.04m | |||||||||||||
 |  |  | |  |  | |  | |  | | | |  | | | |  | | | |
 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — |
 | 5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — |
mm | 2 | — | — | 5 | — | — | — | 7 | 4 | 1 | — | — | — | 3 | 1 | 2 | 1 | — | — | — |
Temp °C | 17 | 17 | 18 | 17 | 16 | 15 | 15 | 15 | 12 | 12 | 15 | 15 | 16 | 16 | 14 | 13 | 15 | 14 | 15 | 15 |
Feels °C | 13 | 12 | 12 | 10 | 10 | 6 | 6 | 5 | 0 | 1 | 9 | 10 | 11 | 9 | 3 | 1 | 6 | 7 | 9 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 16 | — | WSW 16 | WSW 15 | — | — | — | W 16 | WSW 17 | WSW 16 | WSW 16 | — | WSW 18 | — | — | WSW 17 | WSW 16 | WSW 16 |
| kJ | 6702 | 6345 | 4986 | — | 5163 | 4919 | — | — | — | 8381 | 12642 | 7009 | 4736 | — | 61 | — | — | 6305 | 8828 | 5747 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NW 12 | WSW 22 | NW 12 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 6 | 408 | 5 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NW 12 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 5 | WSW 16 | — | W 15 | WSW 15 | WSW 11 | WSW 15 | WSW 17 | — | — | — | WSW 15 | WSW 11 | WSW 14 | WSW 17 | WSW 17 | — | — |
| kJ | — | — | 80 | 5326 | — | 2790 | 4495 | 5581 | 11789 | 15064 | — | — | — | 4619 | 4470 | 7511 | 21273 | 12796 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 240 | 63 | 244 | 367 | 11 | 227 | 367 | 1912 | 2011 | 2011 | 650 | 62 | 1096 | 367 | 1096 | 2445 | 2445 | 2634 | 1 | 1 |
Best forecast wave conditions in Margaret River | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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Information about the Otherside of the Moon Surf forecast
The above surf forecast table for Otherside of the Moon provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Otherside of the Moon can be found by selecting the local surf guide option on the grey menu. Our Otherside of the Moon 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 (Otherside of the Moon) 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 Otherside of the Moon 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.
Otherside of the Moon is 63 km (39 miles) from the city of Bunbury. If you plan a holiday in Margaret River, look for hotels and other accommodation in Bunbury. Bunbury has rooms for a wide range of budgets as well as car hire and transport links.
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