Surf Forecasts:
Manly surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 4AM (local time) - 3ft (0.9m), 8s period, ESE swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 3.5ft (1.1m), 10s period, ESE swell with 235 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 4AM (local time) - 3ft (0.9m), 8s period with ESE swell.
Best Forecast Surf Conditions for Manly this week:
The surf forecast for Manly over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 4AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.6m and 11s. Another secondary swell of 0.7m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Manly in the next 16 days are 1.1m 10s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Tuesday (Aug 25) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 19th Aug) | 3ft (0.9m) 8s |
| Best Surf | 4AM (Wed 19th Aug) | 3ft (0.9m) 8s |
| Most Powerful | 4PM (Wed 19th Aug) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Manly over the next 16 days.
The Lowdown
Alright folks, it’s Rusty here. Let’s get into it. The next week and a half is a bit of a low point for Manly, but hang in there because the final few days of the month and the start of September look like they’ll deliver the goods.
The first good surf we'll see after a long, quiet stretch is on the morning of Wednesday the 19th of August. We’ve got a weak 3ft swell from the ESE, but the magic is in the wind – it’s glassy, dead calm. The water is a bit colder than usual for this time of year at 62°, so you’ll need a decent wetsuit. The combined energy is weak (189), so don’t expect a lot of power, but it’ll be clean enough for a longboard.
After that, it’s a real slog. From the 20th through to the 30th of August, the surf is pretty much flat or tiny and messy. There are a couple of mornings with offshore winds, like the 22nd and 25th, but the swell is just too small – only 1ft to 3ft. It’s not worth rushing out for. The 23rd of August has a glassy morning, but the swell is only 1.0ft with a very long 18-second period, making it a real non-event.
The big change comes on Monday the 31st of August. A solid 8ft to 8ft S swell starts to show, with the combined energy jumping to a strong 1086 (2487 by the afternoon). The wind is clean, cross-off from the WNW, so the lines will be tidy. It’s decent, but the tide might be a factor.
* * * * *
Now, the real standout is Tuesday the 1st of September. This is the one to circle on the calendar. We’re looking at 12ft of S swell – that’s big, powerful stuff, only for experienced surfers. The combined energy is a massive 2194. The wind is a clean offshore from the SW, so the waves will be holding up well. Manly is a point break, so it can handle a big S groundswell, but it’s going to be a serious session. Though it will be clean, the sheer size means it’s not for the faint of heart.
Wednesday the 2nd of September holds plenty of energy too. 7ft to 8ft of S-SSE swell, with clean conditions in the morning and a light cross-shore in the afternoon. Combined energy is still very strong, hitting 1492 to 2498. This is another solid day, but the Tuesday morning is the absolute pick of the entire 16-day window.
So, batten down the hatches for a quiet week, but get ready for a big, powerful finish.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue night. Warm (max 20°C on Thu morning, min 14°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Fri morning, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
AM | 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) | ESE 7 | ESE 7 | ESE 8 | ESE 7 | ESE 10 | SE 9 | ESE 7 | NE 4 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | NE 6 | S 18 | S 15 | S 10 | S 10 | S 10 | ENE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 114 | 96 | 104 | 86 | 235 | 81 | 38 | 31 | 82 | 52 | 34 | 13 | 8 | 13 | 8 | 55 | 69 | 77 | 69 | 69 | 47 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | glassy | on | cross-on | cross-on | on | cross-off | cross | cross | cross | off | cross | glassy | glassy | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 12:07PM1.32m | 00:16AM1.05m | 12:55PM1.29m | 1:12AM0.93m | 1:51PM1.26m | 2:24AM0.86m | 2:55PM1.25m | 3:46AM0.84m | 4:00PM1.27m | 4:56AM0.87m | 4:57PM1.32m | 5:49AM0.92m | 5:45PM1.39m | ||||||||
Low Tide | 6:29PM0.42m | 6:14AM0.38m | 7:34PM0.47m | 6:57AM0.47m | 8:49PM0.50m | 7:52AM0.53m | 10:06PM0.48m | 9:01AM0.55m | 11:10PM0.43m | 10:09AM0.53m | 11:58PM0.37m | 11:07AM0.49m | 00:38AM0.30m | ||||||||
 |  |  |  | |  | | | | | | | | |  | | | | | |  | |
 | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 |
Temp °C | 16 | 16 | 16 | 16 | 16 | 16 | 20 | 20 | 19 | 20 | 17 | 16 | 18 | 16 | 16 | 16 | 16 | 16 | 23 | 23 | 16 |
Feels °C | 13 | 13 | 14 | 13 | 12 | 14 | 16 | 18 | 18 | 18 | 14 | 13 | 15 | 13 | 16 | 16 | 13 | 14 | 20 | 21 | 15 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | ESE 8 | ESE 7 | ESE 10 | SE 9 | NE 5 | ESE 6 | ENE 6 | ENE 6 | ESE 7 | ENE 6 | NE 6 | NE 6 | NE 6 | S 5 | S 8 | NE 5 | S 10 | S 10 | ENE 6 |
| kJ | 82 | 56 | 104 | 86 | 235 | 81 | 30 | 31 | 82 | 52 | 5 | 13 | 8 | 9 | 8 | 4 | 35 | 25 | 69 | 69 | 47 |
Swell 2 Height (m) Direction Period (s) | E 9 | ESE 14 | ESE 11 | ESE 10 | S 8 | E 12 | ESE 7 | E 10 | S 12 | SE 7 | S 11 | SE 7 | S 5 | S 8 | S 4 | S 9 | S 15 | S 10 | NE 5 | ENE 7 | S 9 |
| kJ | 6 | 61 | 100 | 80 | 10 | 3 | 38 | 2 | 3 | 7 | 2 | 2 | 2 | 13 | 3 | 14 | 69 | 77 | 5 | 34 | 41 |
Swell 3 Height (m) Direction Period (s) | SE 15 | E 9 | S 10 | S 9 | E 9 | — | E 11 | S 13 | — | S 11 | — | S 10 | S 9 | S 4 | S 6 | S 18 | E 7 | NE 8 | ENE 8 | S 16 | ENE 9 |
| kJ | 9 | 7 | 46 | 23 | 6 | — | 2 | 4 | — | 2 | — | 2 | 6 | 1 | 3 | 55 | 1 | 17 | 23 | 21 | 9 |
Wind waves Height (m) Direction Period (s) | ESE 7 | ESE 7 | — | — | — | NE 5 | — | NE 4 | — | — | ENE 6 | — | SSW 2 | — | — | — | NE 9 | NNE 5 | — | NE 3 | NNW 3 |
| kJ | 114 | 96 | — | — | — | 62 | — | 26 | — | — | 34 | — | 1 | — | — | — | 37 | 40 | — | 5 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 29 | 29 | 2 | 0 | 401 | 2 | 3 | 30 | 0 | 1 | 3 | 270 | 242 | 747 | 178 | 0 | 314 | 3 | 3 | 4 | 10 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Manly Surf forecast
The above surf forecast table for Manly provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Manly can be found by selecting the local surf guide option on the grey menu. Our Manly 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 (Manly) 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 Manly 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.
Manly is 6 km (4 miles) from Dee Why. If you plan a holiday in Sydney North Coast, look for hotels and other accommodation in Dee Why. Dee Why has rooms for a wide range of budgets as well as car hire and transport links.
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