Surf Forecasts:
Long Reef surf forecast from 12 Sep 2026:
- Best quality surf: Monday 14 Sep, 1AM (local time) - 5ft (1.6m), 6s period, NE swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 7PM (local time) - 15ft (4.5m), 10s period, S swell with 3,798 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 1AM (local time) - 5ft (1.6m), 6s period with NE 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 Monday (Sep 14) at 1AM. The primary swell is predicted to be 1.6m and 6s period with a secondary swell of 1.3m and 6s. Another secondary swell of 0.8m and 12s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Long Reef in the next 16 days are 4.5m 10s and forecast to arrive on Wednesday (Sep 16) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Tuesday (Sep 15) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 14th Sep) | 5ft (1.6m) 6s |
| Best Surf | 1AM (Mon 14th Sep) | 5ft (1.6m) 6s |
| Most Powerful | 7PM (Wed 16th Sep) | 15ft (4.5m) 10s |
Table - best surf conditions forecast for Long Reef over the next 16 days.
The Lowdown
Righto, let’s have a look at what Long Reef has in store for us over the next couple of weeks.
First up, the water temp is sitting at 63°, which is about 1° cooler than what’s normal for this time of year—nothing to write home about, just a touch on the chilly side.
Honestly, the start of this period is a bit of a dud. Sunday the 13th has a small 3ft south swell with an 11-second period, but the wind is cross and then cross-on, so it’s messy. The wave energy is weak (280). Monday’s even smaller and no good either. We’ve got a real dry spell kicking off.
Tuesday the 15th morning sees a tiny 3ft swell from the northeast, but the period is a short 6 seconds and the energy is weak (96). Not worth paddling out for.
Now, things get interesting but only for the experienced crew. Wednesday the 16th morning, a big 10ft south swell rolls in, period 9 seconds, with a clean offshore wind from the SSW at 35 km/h. The combined energy is massive (1548), so this is proper strong. This is big, powerful, and only for experts—beginners, stay well clear. The afternoon gets bigger at 13ft but the wind turns cross and it becomes a lumpy mess.
Thursday the 17th morning has an 12ft south swell (10-second period, energy 2334) with cross-off wind, so still clean and sizeable. Again, experts only. By afternoon, it’s 10ft but the wind goes cross, bringing chop.
Friday the 18th is a standout. The morning has a clean 5ft swell from the ESE with a 10-second period and a light offshore from the NW at 5 km/h. The energy is solid (649), and conditions are looking very good. This is the pick of the whole outlook—smooth, shoulder-high lines with clean faces. Afternoon gets ruined by a cross-on breeze, so hit it early.
Saturday the 19th morning is also a good call. A 3ft swell from the ESE, 11-second period, with a 15 km/h offshore from the west. Energy is 470, and it’s clean. Not huge, but fun and lined up.
After that, things fade. Sunday the 20th has a tiny 2ft swell (energy just 76), and from Monday the 21st through to the end of the period, it’s mostly poor surf with choppy winds, small waves, and no real recommendations. A couple of days in there have swell but the wind is onshore or cross, ruining any chance of quality. Even the big 8ft on Monday the 21st afternoon is wind-chopped to bits.
So, overall: the best on offer is Friday morning the 18th at Long Reef, with clean 5ft ESE swell and light offshore wind. Saturday morning the 19th is also a nice option for something a bit smaller. The big mid-week stuff is only for the brave and skilled.
Rusty
Short Range ForecastMostly dry. Warm (max 23°C on Mon morning, min 11°C on Tue night). Winds increasing (light winds from the NNW on Sun night, strong winds from the S by Tue night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Fri morning, min 9°C on Wed night). Winds decreasing (strong winds from the SSW on Wed morning, light winds from the NW by Fri morning). | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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) | S 11 | S 11 | S 12 | S 11 | S 11 | NE 6 | NE 6 | NE 7 | S 8 | S 9 | S 10 | S 10 | S 10 | S 10 | S 9 | ESE 10 | SE 11 | ESE 11 | ESE 11 | SE 10 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 181 | 181 | 207 | 123 | 81 | 177 | 61 | 46 | 1003 | 1526 | 3232 | 3461 | 2324 | 1729 | 516 | 409 | 476 | 418 | 238 | 110 | 104 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross | off | cross-off | cross-on | cross-off | off | cross-on | off |
High Tide | 9:36PM1.36m | 9:58AM1.46m | 10:16PM1.23m | 10:35AM1.43m | 10:58PM1.10m | 11:15AM1.38m | 11:44PM0.99m | 12:01PM1.32m | 00:40AM0.91m | 12:57PM1.26m | 1:54AM0.86m | 2:05PM1.23m | 3:19AM0.86m | ||||||||
Low Tide | 3:32PM0.19m | 3:41AM0.20m | 4:17PM0.24m | 4:12AM0.29m | 5:04PM0.30m | 4:45AM0.38m | 5:54PM0.38m | 5:21AM0.46m | 6:54PM0.44m | 6:05AM0.54m | 8:06PM0.49m | 7:06AM0.59m | 9:23PM0.48m | ||||||||
 |  |  |  | | | | |  | | | | | | | | | | | | | |
 | 5:58 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:50 | — | — | 5:48 | — | — |
 | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 18 | 17 | 23 | 21 | 21 | 21 | 17 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 18 | 17 | 17 | 25 | 24 | 22 |
Feels °C | 15 | 14 | 14 | 20 | 18 | 18 | 19 | 14 | 5 | 4 | 5 | 6 | 7 | 8 | 11 | 15 | 13 | 15 | 22 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | NE 6 | NE 6 | S 11 | NE 6 | NE 6 | NE 7 | NE 7 | ENE 14 | — | — | E 13 | E 13 | S 9 | ESE 10 | SE 11 | ESE 11 | ESE 11 | S 9 | S 9 |
| kJ | 181 | 181 | 145 | 54 | 81 | 128 | 61 | 46 | 15 | 20 | — | — | 3 | 3 | 516 | 409 | 476 | 418 | 238 | 110 | 104 |
Swell 2 Height (m) Direction Period (s) | NE 5 | ENE 13 | S 12 | S 11 | ENE 13 | S 10 | S 10 | S 9 | ENE 13 | NE 7 | — | — | NE 13 | S 19 | ESE 8 | S 8 | S 9 | S 9 | S 9 | SE 10 | NE 5 |
| kJ | 20 | 17 | 175 | 123 | 16 | 48 | 29 | 14 | 18 | 2 | — | — | 7 | 7 | 175 | 234 | 251 | 287 | 130 | 108 | 22 |
Swell 3 Height (m) Direction Period (s) | S 17 | ENE 13 | ENE 13 | ENE 13 | — | ENE 12 | NE 13 | ENE 13 | — | — | — | — | — | — | E 13 | S 18 | S 18 | S 16 | S 14 | S 14 | SE 8 |
| kJ | 49 | 17 | 17 | 17 | — | 15 | 6 | 17 | — | — | — | — | — | — | 3 | 6 | 24 | 132 | 102 | 103 | 35 |
Wind waves Height (m) Direction Period (s) | NE 5 | NE 5 | NE 6 | — | NE 5 | NE 6 | SSW 3 | SSE 4 | S 8 | S 9 | S 10 | S 10 | S 10 | S 10 | — | — | — | — | — | ENE 3 | — |
| kJ | 30 | 56 | 207 | — | 66 | 177 | 1 | 14 | 1003 | 1526 | 3232 | 3461 | 2324 | 1729 | — | — | — | — | — | 3 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 185 | 0 | 0 | 23 | 0 | 1 | 120 | 78 | 837 | 731 | 191 | 158 | 191 | 0 | 0 | 11 | 0 | 0 | 22 | 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.
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