Surf Forecasts:
Long Reef surf forecast from 11 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 1AM (local time) - 5ft (1.6m), 11s period, S swell with offshore winds.
- Most powerful swell: Tuesday 11 Aug, 7PM (local time) - 6ft (1.8m), 11s period, S swell with 723 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 1AM (local time) - 5ft (1.6m), 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 Wednesday (Aug 12) at 1AM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 0.5m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Long Reef in the next 16 days are 1.8m 11s and forecast to arrive on Tuesday (Aug 11) at 7PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 3s period and expected on Tuesday (Aug 11) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 12th Aug) | 5ft (1.6m) 11s |
| Best Surf | 1AM (Wed 12th Aug) | 5ft (1.6m) 11s |
| Most Powerful | 7PM (Tue 11th Aug) | 6ft (1.8m) 11s |
Table - best surf conditions forecast for Long Reef over the next 16 days.
The Lowdown
Alright, Rusty here again, same spot, different numbers. Let’s talk feet and miles.
The week starts Tuesday morning, August 11th, with a clean 4ft swell out of the SSW and a light offshore breeze. Water temp is about 63°F, a little cooler than normal for this time of year – not a big shock, just a bit of a chill. The wave energy is moderate (201), but the setup is clean and surfable. Tuesday afternoon is the real standout early on: the swell bumps to 6ft from the south with a longer 11-second period, a cross-offshore breeze, and strong energy (801). That’s a prime afternoon session with proper power.
Wednesday the 12th is still good. Morning brings 4ft south swell with clean offshore wind, and the afternoon drops to 3ft but stays clean with a moderate offshore breeze. Both have decent energy (370 and 216). Thursday morning the 13th is clean but small at 3ft, and conditions are just okay. Thursday afternoon gets sketchy with onshore wind and a jumpy 7ft south swell – messy.
Friday morning the 14th is back in the groove: 4ft south swell with a light offshore, clean and fun (244 energy). Afternoon goes south with cross-onshore wind.
Saturday the 15th and Sunday the 16th are no-go – strong cross and cross-onshore winds, lumpy, choppy, and the swell is all over the place. Same bad story runs through Monday the 17th, Tuesday the 18th, and Wednesday the 19th – lots of onshore wind, rain, and poor surf. That’s nearly a week of flat to messy.
Thursday the 20th is weak with a 3ft E swell and just so-so conditions, but Friday the 21st morning has a clean 3ft east swell with a 10-second period (213 energy) and light offshore wind – a nice little window. Saturday the 22nd morning also looks good: 4ft from the ENE with a clean offshore breeze and 10-second period.
Then the big stuff shows. Sunday the 23rd morning brings a chunky 6ft NE swell with 10-second period and strong energy (1283), plus clean cross-offshore wind – that’s a standout for bigger wave hunters, but at 6ft it’s for intermediates and above. Tuesday the 25th morning has a big 10ft south swell with massive energy (2111) – expert-only territory, too big for most, but clean with cross-off wind. The long-range looks promising but less certain, so don’t book time off just yet.
Best on offer: Tuesday afternoon the 11th, with that 6ft south groundswell and clean conditions, and Sunday morning the 23rd, with the 6ft NE swell and clean wind. Those are the ones to chase.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Tue afternoon, min 11°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Fri night. Very mild (max 16°C on Fri morning, min 13°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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) | SSW 7 | S 11 | S 11 | S 10 | S 9 | S 8 | S 8 | S 9 | S 8 | S 9 | S 8 | S 7 | S 7 | S 7 | S 7 | SSE 6 | SSE 7 | SE 7 | ESE 8 | ESE 8 | ESE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 120 | 723 | 584 | 314 | 160 | 86 | 117 | 623 | 159 | 184 | 157 | 150 | 311 | 422 | 187 | 227 | 277 | 407 | 464 | 372 | 491 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | off | off | cross-off | on | cross-off | off | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:01PM1.75m | 7:49AM1.18m | 7:50PM1.77m | 8:35AM1.25m | 8:36PM1.74m | 9:18AM1.30m | 9:20PM1.65m | 10:00AM1.34m | 10:03PM1.52m | 10:41AM1.35m | 10:45PM1.37m | 11:22AM1.35m | 11:29PM1.21m | ||||||||
Low Tide | 12:29PM0.28m | 1:50AM-0.00m | 1:22PM0.23m | 2:33AM-0.03m | 2:13PM0.20m | 3:14AM-0.02m | 3:02PM0.20m | 3:52AM0.03m | 3:51PM0.23m | 4:28AM0.11m | 4:40PM0.29m | 5:02AM0.20m | 5:32PM0.36m | ||||||||
 | |  | |  | | | | | | |  |  | | | | | | | | | |
 | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — |
 | — | 5:21 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | — | 4 | 2 | — | 4 | 3 | 4 | 5 |
Temp °C | 19 | 20 | 14 | 18 | 19 | 14 | 16 | 16 | 15 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 |
Feels °C | 16 | 17 | 7 | 13 | 13 | 10 | 13 | 13 | 13 | 13 | 11 | 12 | 9 | 10 | 12 | 10 | 10 | 11 | 11 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | ENE 9 | S 11 | S 11 | S 10 | S 9 | S 8 | ENE 10 | S 9 | S 8 | S 9 | S 8 | S 7 | ENE 9 | ENE 10 | S 7 | ENE 10 | ENE 10 | ENE 10 | S 10 | S 9 | SSW 9 |
| kJ | 78 | 723 | 584 | 314 | 160 | 86 | 54 | 399 | 159 | 184 | 157 | 150 | 29 | 18 | 187 | 19 | 20 | 19 | 46 | 40 | 15 |
Swell 2 Height (m) Direction Period (s) | S 12 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | S 11 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | S 15 | S 20 | S 11 | S 16 | S 15 | ENE 10 | ENE 10 | SSW 11 | S 11 |
| kJ | 3 | 78 | 48 | 52 | 52 | 50 | 20 | 35 | 29 | 31 | 30 | 29 | 18 | 8 | 37 | 46 | 39 | 10 | 18 | 24 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 15 | S 14 | S 13 | S 16 | S 19 | S 13 | S 19 | S 19 | S 16 | S 15 | — | ENE 10 | — | — | S 16 | ENE 9 | — | — |
| kJ | — | — | — | 4 | 4 | 3 | 5 | 7 | 13 | 29 | 29 | 20 | 4 | — | 18 | — | — | 19 | 17 | — | — |
Wind waves Height (m) Direction Period (s) | SSW 7 | — | W 4 | WNW 3 | — | W 3 | S 8 | S 9 | — | W 3 | — | — | S 7 | S 7 | — | SSE 6 | SSE 7 | SE 7 | ESE 8 | ESE 8 | ESE 8 |
| kJ | 120 | — | 9 | 4 | — | 8 | 117 | 623 | — | 2 | — | — | 311 | 422 | — | 227 | 277 | 407 | 464 | 372 | 491 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 22 | 0 | 0 | 6 | 1 | 57 | 6 | 184 | 191 | 191 | 170 | 158 | 120 | 6 |
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.
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