Surf Forecasts:
Seaford Reef surf forecast from 15 Aug 2026:
- Most powerful swell: Friday 21 Aug, 6PM (local time) - 4.5ft (1.3m), 5s period, WSW swell with 103 kJ wave energy.
Best Forecast Surf Conditions for Seaford Reef this week:
The most powerful waves expected at Seaford Reef in the next 16 days are 1.3m 5s and forecast to arrive on Friday (Aug 21) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Aug 19) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6PM (Fri 21st Aug) | 4.5ft (1.3m) 5s |
Table - best surf conditions forecast for Seaford Reef over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve gotta be straight with you – the next two weeks are a tough watch for this part of the coast. The energy just isn’t coming together for any decent waves, and we’re looking at a long stretch of frustrating conditions.
Seaford Reef is a sheltered beginner reef that’s inconsistent at the best of times, and unfortunately, the models are showing a whole lot of nothing. The best we can see is a weak pulse of long-period groundswell sneaking in from the SW on Monday the 17th of August – but that’s only 0.3 feet, which is barely a ripple. The energy is weak (7 to 9 combined energy), and while the wind stays offshore or glassy, there just isn’t enough swell to push any surf through. You’d be looking for a bump in the lake.
There’s a bit more activity around Thursday the 27th, when a clean 5 foot swell from the NNW rolls in. The combined energy jumps to 115 (moderate), which is the most meaningful push we see all period. The wind is offshore from the NNE, so it’ll be clean. But that swell is short period (5 seconds) – a real windswell – and with the reef being sheltered, it’s likely to be crumbly and soft. That wave height is right on the edge of being too big for beginners, but it’s still a small wave by most standards.
The only other blip is Friday the 28th afternoon, when a 6 foot swell from the WNW shows up with a big energy reading of 266 (strong). That’s a solid push, but the period is only 6 seconds, so it’s messy. The wind is light cross-onshore, so it won’t be clean. For a reef, that’s a lot of bumpy, short-period chop – more of a kite-surf session than a paddle-friendly wave.
On the whole, the water temperature is about average for this time of year, nothing wild. But the surf story is bleak. There’s a gap of over a week between the tiny swell on the 17th and the 5 foot bump on the 27th, so don’t hold your breath. If you’re desperate, the 27th morning is the best bet, but keep expectations low.
Stay patient, and remember – this stretch of flatness is more normal for the area than a run of good luck. Forecasts can change, but right now, there’s nothing to get excited about.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Tue afternoon. Very mild (max 17°C on Mon morning, min 11°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Tue night. Very mild (max 15°C on Tue night, min 9°C on Thu night). Winds decreasing (fresh winds from the N on Tue night, calm by Thu afternoon). | ||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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) | SW 14 | W 8 | W 8 | W 8 | SW 13 | SW 13 | SW 14 | SW 13 | W 10 | SW 10 | NW 5 | WNW 4 | W 5 | WSW 8 | WSW 8 | WSW 8 | W 5 | W 5 | WSW 5 |
Wave Graph  | |||||||||||||||||||
 kJ | 8 | 1 | 1 | 1 | 7 | 7 | 8 | 7 | 2 | 4 | 30 | 16 | 15 | 22 | 13 | 6 | 52 | 66 | 78 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | on | on | on | glassy | cross-on | cross-on | cross |
High Tide | 6:04AM1.83m | 6:04PM1.97m | 6:18AM1.97m | 6:18PM1.89m | 6:37AM2.06m | 6:33PM1.80m | 7:02AM2.08m | 6:51PM1.66m | 7:31AM2.02m | 7:07PM1.49m | 8:04AM1.87m | 7:12PM1.28m | |||||||
Low Tide | 00:04AM0.41m | 11:57AM0.46m | 00:10AM0.41m | 12:20PM0.47m | 00:20AM0.38m | 12:45PM0.52m | 00:35AM0.35m | 1:13PM0.60m | 00:53AM0.35m | 1:45PM0.73m | 1:12AM0.42m | 2:24PM0.89m | 1:23AM0.54m | ||||||
 |  | | | | |  |  | |  |  | |  | | |  |  | | | |
 | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — |
 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — |
mm | — | — | — | — | — | — | 3 | 1 | 5 | 1 | — | 1 | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 14 | 13 | 17 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 13 | 14 | 14 | 12 | 13 | 12 | 12 |
Feels °C | 9 | 9 | 10 | 9 | 13 | 12 | 10 | 12 | 12 | 10 | 9 | 9 | 9 | 11 | 12 | 11 | 9 | 7 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 8 | W 8 | W 8 | W 8 | SW 13 | SW 13 | SW 14 | W 10 | W 10 | SW 10 | N 5 | SW 14 | W 5 | WSW 8 | WSW 8 | WSW 8 | SW 10 | SW 10 | — |
| kJ | 3 | 1 | 1 | 1 | 7 | 7 | 8 | 2 | 2 | 4 | 11 | 8 | 15 | 22 | 13 | 6 | 4 | 4 | — |
Swell 2 Height (m) Direction Period (s) | SW 14 | S 14 | S 14 | S 14 | — | — | W 10 | SW 13 | S 13 | — | W 10 | — | SW 13 | — | — | — | SW 14 | SW 14 | — |
| kJ | 8 | 4 | 4 | 4 | — | — | 2 | 7 | 3 | — | 2 | — | 7 | — | — | — | 8 | 7 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | ESE 2 | SE 2 | — | E 3 | — | NE 3 | NNE 3 | NNE 4 | NNE 4 | NW 5 | WNW 4 | — | — | — | W 4 | W 5 | W 5 | WSW 5 |
| kJ | 2 | 1 | 1 | — | 1 | — | 4 | 5 | 4 | 10 | 30 | 16 | — | — | — | 5 | 52 | 66 | 78 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 44 | 135 | 135 | 43 | 135 | 44 | 43 | 44 | 44 | 43 | 43 | 559 | 43 | 43 | 43 | 43 | 44 | 617 | 128 |
Best forecast wave conditions in Adelaide | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Seaford Reef Surf forecast
The above surf forecast table for Seaford Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Seaford Reef can be found by selecting the local surf guide option on the grey menu. Our Seaford Reef 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 (Seaford Reef) 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 Seaford Reef 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.
Seaford Reef is 7 km (4 miles) from the very large city of Morphett Vale. If you plan a holiday in Adelaide, look for hotels and other accommodation in Morphett Vale. Morphett Vale has rooms for a wide range of budgets as well as cheap car hire and transport links.
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