Surf Forecasts:
Long Reef surf forecast from 17 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 1AM (local time) - 3ft (0.9m), 8s period, ESE swell with glassy winds.
- Most powerful swell: Monday 24 Aug, 10PM (local time) - 4.5ft (1.4m), 9s period, S swell with 313 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 1AM (local time) - 3ft (0.9m), 8s period with ESE 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 19) at 1AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.6m and 11s. 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 1.4m 9s and forecast to arrive on Monday (Aug 24) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Saturday (Aug 22) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 19th Aug) | 3ft (0.9m) 8s |
| Best Surf | 1AM (Wed 19th Aug) | 3ft (0.9m) 8s |
| Most Powerful | 10PM (Mon 24th Aug) | 4.5ft (1.4m) 9s |
Table - best surf conditions forecast for Long Reef over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's coming our way for Long Reef.
Right now, we're in a bit of a dry spell. Don't bother paddling out just yet. The good news? This stretch of quiet water isn't going to last forever. We've got a few windows of opportunity if you're patient and picky.
Starting off, Monday the 17th into Tuesday is a write-off – onshore winds and poor surf. You'll be fighting the chop for nothing. Wednesday morning the 19th is the first sign of life. It won't be much, just 2ft from the ESE, but the wind goes dead calm. Glassy as a mirror. It's a tiny, weak wave with a combined energy of (170) – barely enough to get your fins wet. Still, it's a surfable and clean start if you're desperate.
Thursday morning the 20th sees a tiny 3ft from the NE with a short 5-second period, but the wind is cross-off and clean. The energy is weak (114). Same story for Friday and Saturday – small, clean, but incredibly weak. Not worth a special trip.
Now, here's where it gets interesting for the patient surfer. We skip a few days of nothing special until Wednesday morning the 26th. Expect a glassy morning with a 2.3ft southerly swell. The combined energy jumps to (201), and that's when we see our first real positive note: the forecast calls for "good surf conditions". It's a reef break, so that long period of 11 seconds will wrap in nicely, but be warned – it's not a beginner's wave. Crowds are always a possibility here.
But the true standout is the last week of the month. Skip ahead to Friday the 28th afternoon. We've got a solid 2.3ft from the south with a 14-second period, and the wind is howling offshore at 15 mph from the west. That wind will keep it clean as a whistle. The combined energy is pumping at (315). That's your best bet for a clean, fun session in this first week and a half.
Then things get more serious. By Sunday the 30th, the swell is pumping in at 7.5ft to 8.2ft from the south. That's big for a reef. The combined energy is massive (1070), but the wind is cross or cross-off. This is advanced territory only. Not for the faint-hearted. That trend continues into the first of September with a 5.9ft south groundswell (13-second period) and moderate energy (1092). It's still good, but the cross-onshore wind will be a factor.
So to sum it up: Wednesday morning the 26th for the first glassy, clean session. But the real standout for the full 16-day window is Friday afternoon the 28th – clean offshore, long-period south swell, and a reef that loves that direction. It's the best combination of quality and decent size without being a washing machine. Get on it, because the following days are big and heavy.
Short Range ForecastMostly dry. Warm (max 20°C on Thu morning, min 14°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Fri night. Very mild (max 18°C on Thu night, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 7 | ESE 8 | ESE 7 | ESE 10 | NNE 5 | ESE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | NE 6 | S 18 | S 9 | S 11 |
Wave Graph | |||||||||||||||||||
96 | 96 | 96 | 107 | 89 | 210 | 90 | 42 | 38 | 61 | 45 | 24 | 13 | 9 | 12 | 9 | 57 | 76 | 63 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | glassy | glassy | cross-on | cross | cross | cross | cross-off | glassy | cross-on | cross-off | cross-off | cross | cross | cross-off | cross-on | cross-off |
High Tide | 11:29PM1.21m | 12:06PM1.33m | 00:16AM1.06m | 12:54PM1.30m | 1:11AM0.94m | 1:50PM1.27m | 2:23AM0.87m | 2:55PM1.26m | 3:45AM0.85m | 4:00PM1.28m | 4:56AM0.88m | 4:57PM1.33m | |||||||
Low Tide | 5:37AM0.30m | 6:28PM0.43m | 6:14AM0.39m | 7:33PM0.49m | 6:56AM0.47m | 8:49PM0.51m | 7:52AM0.53m | 10:06PM0.50m | 9:00AM0.56m | 11:09PM0.45m | 10:09AM0.54m | 11:58PM0.38m | |||||||
— | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | |
— | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 8 | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 16 | 17 | 16 | 16 | 20 | 19 | 18 | 18 | 17 | 14 | 18 | 16 | 16 | 17 | 17 | 15 |
Feels °C | 13 | 13 | 13 | 15 | 15 | 12 | 14 | 17 | 16 | 16 | 15 | 14 | 12 | 14 | 12 | 14 | 14 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | S 8 | ESE 7 | S 11 | ESE 8 | ESE 7 | ESE 10 | NE 5 | ESE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | NE 6 | NE 6 | NE 6 | ENE 9 | S 9 | S 7 |
49 | 96 | 56 | 107 | 89 | 210 | 62 | 42 | 38 | 61 | 45 | 24 | 13 | 9 | 12 | 9 | 30 | 76 | 34 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 11 | ESE 14 | ESE 11 | ESE 10 | S 8 | SE 9 | ENE 5 | E 10 | E 10 | S 11 | ESE 7 | S 5 | S 4 | S 4 | S 8 | SSW 8 | NE 9 | S 11 |
24 | 57 | 61 | 100 | 80 | 11 | 81 | 19 | 2 | 2 | 2 | 5 | 4 | 2 | 1 | 5 | 24 | 38 | 63 | |
Swell 3 Height (m) Direction Period (s) | SE 10 | E 9 | E 9 | S 10 | S 9 | E 9 | E 12 | E 11 | S 13 | S 12 | S 11 | S 11 | SE 7 | SE 7 | SE 7 | NE 9 | S 18 | S 15 | NE 8 |
16 | 6 | 7 | 46 | 24 | 6 | 3 | 2 | 4 | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 57 | 74 | 31 | |
Wind waves Height (m) Direction Period (s) | ESE 7 | — | ESE 7 | — | — | NE 3 | NNE 5 | — | NE 4 | — | — | — | — | — | — | S 5 | SSE 5 | ESE 4 | E 4 |
96 | — | 96 | — | — | 5 | 90 | — | 19 | — | — | — | — | — | — | 4 | 28 | 13 | 7 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 17 | 35 | 123 | 0 | 0 | 35 | 0 | 0 | 1 | 0 | 1 | 264 | 274 | 264 | 342 | 206 | 0 | 125 | 0 |
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.











