Surf Forecasts:
Long Reef surf forecast from 12 Aug 2026:
- Best quality surf: Thursday 13 Aug, 4AM (local time) - 4.5ft (1.3m), 8s period, SSW swell with offshore winds.
- Most powerful swell: Thursday 13 Aug, 7PM (local time) - 5ft (1.6m), 9s period, S swell with 417 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 4AM (local time) - 4.5ft (1.3m), 8s period with SSW 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 Thursday (Aug 13) at 4AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.5m and 10s. Another secondary swell of 0.1m and 16s is also forecast. 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 1.6m 9s and forecast to arrive on Thursday (Aug 13) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Aug 14) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Thu 13th Aug) | 4.5ft (1.3m) 8s |
| Best Surf | 4AM (Thu 13th Aug) | 4.5ft (1.3m) 8s |
| Most Powerful | 7PM (Thu 13th Aug) | 5ft (1.6m) 9s |
Table - best surf conditions forecast for Long Reef over the next 16 days.
The Lowdown
Alright mate, Rusty here. Let’s break down what’s on the menu for the next couple of weeks.
The surf pattern is a slow starter. The first few days are a total write-off with onshore chop and weak, small waves. Things pick up a little toward the end of the first week, and the second week brings a serious pulse of energy, but it’s for the experienced crew only. The standout window is definitely around the 24th and then that big pulse on the 26th.
Long Reef is the only spot on the cards. The water temp is about average for this time of year, nothing unusual.
Right now, starting Thursday the 13th, it’s a mess. A weak 4 ft S swell with a short 8-second period and a cross-off wind is making for choppy, marginal surf. The energy is low (223). That afternoon, a 5 ft S swell with 9 seconds shows up, but it’s cross-on and choppy, so just forget it. Friday the 14th morning is the first little flicker – a clean 4 ft S swell with 9 seconds and a light offshore wind from the west. The energy is moderate (276). It’s not a bomb, but it’s the first clean wave. Friday afternoon goes back to poor.
Saturday the 15th and Sunday the 16th are a write-off with rain showers, strong cross-shore winds, and short-period windswell. The energy is moderate (337 and 344) but the quality is junk. Monday through Wednesday the 19th are all poor, with tiny waves and onshore winds, though Wednesday morning the 19th gets a tiny 4 ft E swell with a 6-second period and glassy conditions, but the energy is weak (143) and it’s really just a pond.
Then there’s a real gap. From Thursday the 20th through to Sunday the 23rd, it’s tiny and poor – swells under 3 ft, mostly weak energy (under 200), and only a few periods of clean conditions. This is a long stretch of nothing special.
Now, the first real standout is Monday the 24th afternoon. The swell is 4 ft from the ENE with a 10-second period, and the wind is a light cross-off from the southwest. The energy is moderate (266) and the conditions are clean. It’s a proper, fun little reef wave. This is the best of the bunch for the first week.
Tuesday the 25th stays clean with offshore winds, but the swell drops to 3 ft to 3 ft from the ENE, energy is low (189 to 131), so it’s more of a longboarder’s session.
And then, hold onto your hat. Wednesday the 26th morning brings a solid 8 ft S swell with a 10-second period, and the energy is strong (1041). The wind is a clean cross-off from the SSW. This is a big, powerful groundswell. For a reef like Long Reef, that’s a proper expert session. The swell is big, the period is good, and it’s clean. The afternoon pushes up to 10 ft S with 11 seconds and even stronger energy (1993), but the wind swings cross-shore and creates a chop, so it’s a bit more of a handful. This is expert territory only. Thursday the 27th and Friday the 28th hold onto decent S swell (6 ft to 4 ft) with moderate energy (757 to 361), but the winds are cross-shore or cross-off, so it’s not as clean as that Wednesday morning.
So, bottom line: the 24th afternoon is your pick for clean, fun, manageable waves. The 26th morning is the big dog for the advanced crew, but it’s powerful and heavy. The rest of the window is mostly small or poor. Keep an eye on those forecasts for the later part, as it’s a bit further out.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sat morning. Very mild (max 17°C on Thu morning, min 11°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Sat night. Very mild (max 16°C on Mon morning, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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) | S 8 | S 8 | S 9 | S 8 | S 9 | S 8 | S 9 | S 9 | S 8 | S 7 | SSE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 6 | ESE 7 | S 11 | E 6 |
Wave Graph | |||||||||||||||||||
108 | 161 | 408 | 217 | 219 | 114 | 180 | 290 | 401 | 192 | 232 | 116 | 175 | 176 | 145 | 75 | 99 | 55 | 49 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-on | off | off | cross-on | cross-off | cross | cross | cross-off | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on |
High Tide | 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 | 12:06PM1.33m | 00:16AM1.06m | |||||||
Low Tide | 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 | 5:37AM0.30m | 6:28PM0.43m | |||||||
— | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | |
— | — | 5:22 | — | — | 5:22 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | |
mm | — | — | — | — | — | — | 1 | 4 | 1 | 4 | — | 1 | 1 | — | 1 | 4 | 1 | — | 6 |
Temp °C | 14 | 17 | 16 | 15 | 16 | 15 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 16 | 15 | 16 | 16 | 15 | 16 |
Feels °C | 9 | 13 | 13 | 13 | 13 | 11 | 15 | 11 | 10 | 10 | 11 | 12 | 11 | 12 | 11 | 13 | 12 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | S 8 | ENE 10 | S 9 | S 8 | S 9 | S 8 | S 9 | S 9 | S 18 | S 7 | S 17 | S 7 | S 11 | S 10 | S 9 | E 6 | ESE 7 | E 6 | E 6 |
108 | 54 | 408 | 217 | 219 | 114 | 180 | 290 | 104 | 192 | 89 | 107 | 146 | 116 | 76 | 75 | 99 | 49 | 49 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | S 16 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 10 | S 17 | ENE 10 | S 12 | S 17 | S 15 | SSW 13 | SE 7 | S 11 | SE 7 | SE 7 |
49 | 5 | 35 | 29 | 31 | 30 | 29 | 17 | 18 | 94 | 20 | 66 | 22 | 40 | 31 | 47 | 57 | 38 | 25 | |
Swell 3 Height (m) Direction Period (s) | S 13 | S 12 | S 19 | S 16 | S 18 | S 15 | S 15 | S 19 | — | ENE 10 | S 13 | ENE 10 | ENE 10 | SSW 15 | — | S 8 | ENE 9 | S 11 | S 10 |
3 | 3 | 7 | 5 | 26 | 39 | 17 | 30 | — | 19 | 3 | 20 | 11 | 45 | — | 33 | 16 | 55 | 29 | |
Wind waves Height (m) Direction Period (s) | W 4 | S 8 | — | — | W 3 | — | — | — | S 8 | — | SSE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | — | — | — | — |
9 | 161 | — | — | 1 | — | — | — | 401 | — | 232 | 116 | 175 | 176 | 145 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 1 | 6 | 0 | 0 | 57 | 0 | 1 | 57 | 0 | 158 | 170 | 170 | 22 | 170 | 170 | 84 | 207 | 23 |
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.











