Surf Forecasts:
Long Reef surf forecast from 21 Aug 2026:
- Best quality surf: Sunday 23 Aug, 7AM (local time) - 5ft (1.5m), 11s period, S swell with glassy winds.
- Most powerful swell: Sunday 23 Aug, 7AM (local time) - 5ft (1.5m), 11s period, S swell with 496 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 4AM (local time) - 3ft (0.9m), 11s period with S swell.
Best Forecast Surf Conditions for Long Reef this week:
The surf forecast for Long Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 4AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.7m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Long Reef in the next 16 days are 1.5m 11s and forecast to arrive on Sunday (Aug 23) at 7AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Wednesday (Aug 26) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 23rd Aug) | 3ft (0.9m) 11s |
| Best Surf | 7AM (Sun 23rd Aug) | 5ft (1.5m) 11s |
| Most Powerful | 7AM (Sun 23rd Aug) | 5ft (1.5m) 11s |
Table - best surf conditions forecast for Long Reef over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s check the outlook for Long Reef. It’s a slow start, but there’s a couple of days that’ll get your blood pumping if you can hold out.
Right now, we’re in a flat spell. Saturday the 22nd and Sunday morning have nothing worth dragging your board out for—tiny, chopped, or just plain rubbish. But Sunday morning the 23rd is where it starts to look up. We’ve got 5ft of swell from the south, with a 9-second period, and the wind is glassy—dead calm. The water’s about average for this time of year. That’s a clean, fun morning, and the energy is moderate (391). It’s a reef, so it’ll handle the south swell well, and it’s fairly consistent. There might be a few others around as crowds are sometimes a thing here.
Then we hit a dry patch. Monday through to Thursday morning are all marginal with poor conditions and onshore or cross-chop killing the vibe. Don’t bother.
Come Wednesday morning the 26th, though, it gets interesting. 6ft of northeast swell, 8-second period, and a clean offshore breeze from the west. The energy is strong (722). That’s a solid wave, but at that size it’s more for experienced surfers—beginners will be in over their heads. It’s a short-period swell, so it’ll be a bit crumbly, but at a reef that’s not a big deal. The morning is the only window; the arvo turns into a cross-shore mess.
After that, Thursday and Friday mornings offer small, clean waves—3ft to 4ft from the east-northeast, glassy or light offshore winds. Nice for a mellow session, nothing to get excited about.
Now, the real standout is sitting way out there on Friday the 4th of September. Both morning and afternoon are pumping—10ft of south swell, 8-second period, with light offshore breezes. The combined energy is massive (1393 and 1261). That’s a big, powerful swell, and it’s only for the experts. At that size, the reef will be going off, but beginners need to stay well clear. The short period means it’ll be a bit raw, but with clean conditions and that much energy, it’s a session you’ll remember. Crowds are possible, but on a day like that, the lineup will thin out quick.
The rest of the second week is a mix of poor or average conditions—cross-shore winds, chop, and smaller, unremarkable swell. There’s a small window on Sunday the 6th of September morning with 4ft from the east, clean but ordinary.
Overall, the best bets are Sunday morning the 23rd of August for a clean, fun reef session, and Friday the 4th of September for the big, expert-only bomb. The gap between the 23rd and the 4th is full of small, messy, or blown-out days, but that Friday is worth the wait.
Stay patient, and keep your eyes on that Friday.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Sat morning, min 13°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Tue night. Warm (max 21°C on Tue morning, min 14°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
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) | NE 6 | SSW 8 | S 13 | S 9 | S 13 | S 10 | S 10 | S 10 | NE 6 | NE 6 | ENE 6 | ENE 7 | NE 8 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 |
Wave Graph | |||||||||||||||||||||
9 | 22 | 14 | 320 | 273 | 242 | 159 | 125 | 203 | 87 | 120 | 173 | 232 | 178 | 149 | 116 | 125 | 218 | 176 | 164 | 137 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | on | glassy | cross-on | cross | cross | cross-on | cross-off | cross | cross-on | cross-off | cross-off | cross | cross-off | glassy | cross-on | off | off | cross-on | cross-off |
High Tide | 4:00PM1.28m | 4:56AM0.88m | 4:57PM1.33m | 5:48AM0.93m | 5:45PM1.40m | 6:30AM1.00m | 6:27PM1.46m | 7:07AM1.07m | 7:04PM1.52m | 7:42AM1.15m | 7:40PM1.55m | 8:16AM1.22m | 8:16PM1.54m | ||||||||
Low Tide | 11:09PM0.45m | 10:09AM0.54m | 11:58PM0.38m | 11:07AM0.50m | 00:37AM0.31m | 11:55AM0.44m | 1:12AM0.24m | 12:38PM0.38m | 1:44AM0.18m | 1:19PM0.32m | 2:14AM0.14m | 1:59PM0.28m | 2:44AM0.11m | ||||||||
6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | |
— | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 5 | 2 | — | 1 | — | — | — | — | — | — |
Temp °C | 20 | 17 | 16 | 16 | 16 | 16 | 19 | 17 | 17 | 21 | 21 | 16 | 17 | 17 | 16 | 18 | 16 | 16 | 22 | 20 | 17 |
Feels °C | 17 | 14 | 15 | 13 | 12 | 13 | 16 | 13 | 14 | 18 | 19 | 15 | 16 | 16 | 15 | 17 | 14 | 15 | 21 | 18 | 14 |
Swell 1 Height (m) Direction Period (s) | NE 6 | SSW 8 | NE 6 | S 9 | S 8 | S 10 | S 10 | S 10 | NE 6 | ENE 6 | S 9 | ENE 7 | NE 8 | S 11 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | S 7 | ENE 8 |
9 | 22 | 9 | 320 | 127 | 242 | 159 | 125 | 124 | 63 | 41 | 173 | 232 | 9 | 149 | 116 | 125 | 218 | 176 | 26 | 137 | |
Swell 2 Height (m) Direction Period (s) | SSW 6 | NE 6 | S 4 | NE 6 | S 13 | NE 8 | NE 5 | E 13 | S 10 | S 9 | S 16 | S 9 | S 15 | S 14 | S 11 | S 5 | S 6 | S 7 | S 7 | S 11 | S 7 |
4 | 9 | 1 | 9 | 273 | 18 | 28 | 3 | 69 | 43 | 19 | 13 | 71 | 16 | 20 | 10 | 37 | 46 | 37 | 21 | 14 | |
Swell 3 Height (m) Direction Period (s) | S 9 | E 9 | S 13 | S 17 | E 14 | E 14 | NE 8 | E 13 | ENE 10 | ENE 9 | SSW 16 | S 17 | — | S 14 | — | S 10 | S 10 | S 13 | S 12 | S 9 | S 10 |
6 | 2 | 14 | 51 | 4 | 4 | 10 | 3 | 9 | 32 | 48 | 50 | — | 15 | — | 31 | 17 | 31 | 25 | 2 | 28 | |
Wind waves Height (m) Direction Period (s) | WNW 2 | — | ESE 4 | — | NE 9 | NE 4 | NNE 5 | NE 5 | NE 6 | NE 6 | ENE 6 | WNW 3 | — | NE 8 | SSW 2 | — | — | NNE 3 | — | ENE 8 | — |
1 | — | 9 | — | 38 | 22 | 46 | 49 | 203 | 87 | 120 | 8 | — | 178 | 1 | — | — | 4 | — | 164 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 189 | 342 | 55 | 0 | 22 | 0 | 0 | 175 | 0 | 0 | 0 | 11 | 0 | 1 | 0 | 0 | 11 | 0 | 0 | 11 | 1 |
Best forecast wave conditions in Sydney North Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Long Reef Surf forecast
The above surf forecast table for Long Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Long Reef can be found by selecting the local surf guide option on the grey menu. Our Long 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 (Long 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 Long 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.
Long Reef is 2 km (1 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.











