Long Reef Surf Break

Lat Long: 33.74° S 151.32° E

Long Reef Surf Forecast and Surf Report

Issued: 3 pm 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Long Reef sea temperature is
17.9°C
0.1° 

Long Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Long Reef surf forecast from 8 Sep 2026:

  • Best quality surf: Thursday 10 Sep, 10PM (local time) - 8ft (2.5m), 10s period, S swell with cross-offshore winds.
  • Most powerful swell: Thursday 10 Sep, 1AM (local time) - 13ft (4.0m), 10s period, S swell with 2,920 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 1AM (local time) - 5.5ft (1.7m), 9s period with SSE 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 (Sep 09) at 1AM. The primary swell is predicted to be 1.7m and 9s period with a secondary swell of 0.2m and 10s. 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 4.0m 10s and forecast to arrive on Thursday (Sep 10) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 2s period and expected on Wednesday (Sep 09) at 7AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Wed 9th Sep)5.5ft (1.7m) 9s
Best Surf10PM (Thu 10th Sep)8ft (2.5m) 10s
Most Powerful 1AM (Thu 10th Sep)13ft (4.0m) 10s

Table - best surf conditions forecast for Long Reef over the next 16 days.


The Lowdown

Alright crew, Rusty here. Let’s break down the goods for Long Reef. This spot is gonna see some ups and downs over the next couple weeks, but there are a few real gems hidden in there.

The main event, the one you want to circle on the calendar, is Saturday morning, September 12th at Long Reef. The swell is running a solid 4ft from the south, and the wind is going glassy – that’s the holy grail for a reef break. The wave energy is moderate at 460, so it’s got some push but won’t be a washing machine. For an advanced spot like this, a glassy morning with that size is a gift.

Tuesday afternoon, September 8th gets things going with a 7ft SSE swell. The wind is a light cross-on from the SE at 6 mph, which is okay, but the energy is moderate (544). The water temp is 64°, which is about average for this time of year. Not a standout, but ridable.

Wednesday, September 9th is a blowout. Strong southerly winds up to 25 mph and a 10ft cross-shore mess – that’s kite-surf territory, not paddle.

Thursday, September 10th has a bigger 8ft south swell, but the wind is cross or cross-off, and the conditions are marginal. The energy is strong (1634 ft-lbs Thursday afternoon), but it’s hard to call it clean.

Friday morning, September 11th is better: a 7ft south swell with a clean cross-off breeze from the SW at 9 mph, and energy at 777. A solid session, but not the best.

After the peak Saturday, the surf drops off a cliff. Sunday, September 13th through Monday, September 14th sees the swell fade to 3ft. The period is long (11-12 seconds), which is classic groundswell for the reef, but it’s just too small to get excited about.

Tuesday, September 15th brings a pulse back to 7ft, but the wind is cross and messy, leaving it marginal.

We get a run of cleaner conditions starting Wednesday morning, September 16th. The morning is glassy with a 3ft south swell, 11-second period, and clean conditions. Energy is 377. The afternoon turns onshore and poor. Friday, September 18th is a beauty: a 3ft south swell, clean with a light NW cross-off, and glassy in the afternoon. That’s a real nice, relaxed session.

Saturday, September 19th is tiny (2ft) but has a 17-second period and offshore wind in the morning. Fun for the loggers, but inconsistent.

Sunday, September 20th is another clean day: a 4ft south swell, gentle offshore winds, and moderate energy at 362.

Monday, September 21st is the late-period highlight. The morning session has a 5ft south swell, 9-second period, a light offshore from the WSW at 6 mph, and strong energy at 506. Expect very good, clean surf. The afternoon gets a gusty 19 mph SW wind, so get out early.

Then it’s all over. Tuesday, September 22nd drops to 1.0ft, and the rest of the window is flat or tiny with poor winds. The Wednesday, September 23rd has a 0.7ft, 18-second groundswell that’s not going to break for a paddle surfer.

Bottom line: Saturday morning, September 12th is your glassy, clean winner, and Monday morning, September 21st is your pick for a bit more size and power. Everything else is either a small clean window or blown out.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Wed night. Very mild (max 16°C on Wed morning, min 11°C on Tue night). Winds increasing (light winds from the ENE on Tue afternoon, strong winds from the S by Wed afternoon).

Days 5-7 Weather Summary

Mostly dry. Warm (max 24°C on Mon morning, min 13°C on Sat night). Wind will be generally light.

Tue
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
0
0
2
3
2
4
3
1
2
2
0
2
1
0
2
2
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
SSE
8
1.7
SSE
9
1
S
8
3
S
8
4
S
10
2.5
S
9
2.5
S
10
2.4
S
10
2
S
10
1.8
S
10
1.4
SSE
10
1.3
S
10
1.1
S
11
0.5
S
19
0.8
S
11
0.8
S
11
0.7
S
10
0.8
S
12
0.8
S
11
0.6
S
10
Wave Graph
Metric surfscale
Energy kJ
536
427
133
906
2920
1112
1387
1147
739
602
386
332
279
171
143
149
102
172
151
78
Wind (km/h)
10
SE
10
NNW
15
SSW
40
S
30
S
20
SSW
25
S
15
SW
15
SW
15
SSE
10
W
5
NNW
20
ENE
10
NNW
10
NNE
25
NE
10
WNW
5
NW
20
NE
10
W
Wind State
cross-on
cross-off
cross-off
cross
cross-off
cross-off
cross
cross-off
cross-off
cross-on
off
glassy
cross-on
cross-off
cross-on
cross-on
cross-off
cross-off
cross-on
off
High Tide
5:56PM1.61m
6:45AM1.20m
6:46PM1.64m
7:28AM1.29m
7:32PM1.63m
8:07AM1.37m
8:15PM1.57m
8:45AM1.43m
8:56PM1.48m
9:22AM1.46m
9:36PM1.36m
9:58AM1.46m
10:16PM1.23m
Low Tide
00:41AM0.08m
12:24PM0.28m
1:23AM0.04m
1:14PM0.21m
2:01AM0.04m
2:02PM0.18m
2:36AM0.07m
2:47PM0.17m
3:09AM0.12m
3:32PM0.19m
3:41AM0.20m
4:17PM0.24m
clear
clear
part cloud
cloud
light rain
part cloud
clear
part cloud
cloud
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:01
6:00
5:58
5:58
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:39
5:40
5:42
5:43
5:43
5:44
5:45
 mm
1
Temp °C
15
14
16
15
14
13
15
14
15
16
15
18
17
15
19
18
17
24
22
22
Feels °C
12
11
12
7
5
8
11
11
13
14
15
14
13
13
15
14
16
21
18
20
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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