Reef Surf Break

Lat Long: 38.98° N 9.42° W

Reef Surf Forecast and Surf Report

Issued: 6 am 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Reef sea temperature is
18.0°C
2.6° 

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


Reef surf forecast from 11 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 10PM (local time) - 4.5ft (1.4m), 12s period, NW swell with cross-offshore winds.
  • Most powerful swell: Thursday 17 Sep, 1AM (local time) - 5ft (1.5m), 12s period, NW swell with 593 kJ wave energy.
  • Next surfable swell (1★+): Saturday 12 Sep, 10PM (local time) - 2ft (0.6m), 9s period with WNW swell.

Best Forecast Surf Conditions for Reef this week:

The surf forecast for Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 12) at 10PM. The primary swell is predicted to be 0.6m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Reef in the next 16 days are 1.5m 12s and forecast to arrive on Thursday (Sep 17) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Wednesday (Sep 16) at 7AM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sat 12th Sep)2ft (0.6m) 9s
Best Surf10PM (Sun 13th Sep)4.5ft (1.4m) 12s
Most Powerful 1AM (Thu 17th Sep)5ft (1.5m) 12s

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


The Lowdown

Alright, let’s get into it.

The next couple of days are looking pretty average, if we’re being honest. The swell is small and wonky, and the wind is mostly cross or onshore. You might see a few lines in the water on Friday morning, but it’s going to be weak and period-short, around 3ft at 6 seconds from the NNW with a cross-off breeze. The water is a chilly 64°, which is 5° colder than it should be this time of year. That’s a big deal – it’s much colder than normal, so if you’re paddling out, bring the thick rubber.

Saturday looks pretty flat, with the swell dropping to 2ft. Not worth the effort.

Now, here’s where things start to get interesting. Sunday morning, September 13th, is the first real standout. It’s glassy, with the wind completely calm. The swell jumps to 3ft from the NW with a period of 13 seconds. That’s a proper groundswell, pushing the combined energy to 330 (moderate). The direction is right in the sweet spot for Reef. This is the kind of morning you’ll want to be out early, before it gets bigger. The period is long, so the sets will have some push, and the glassy conditions will have it looking like a mirror. This one is a go.

By Sunday afternoon, the swell builds to 4ft, but the wind turns onshore from the west. It’ll be lumpy and less appealing. Monday and Tuesday look poor, with small, short-period leftovers and cross-shore winds.

The next real window opens up on Saturday morning, September 19th. After a few days of junk, we get a light cross-off breeze from the SSE and a clean 4ft swell from the NW at 10 seconds. Combined energy is 235 (moderate). It won’t be as powerful as Sunday’s swell, but the conditions will be clean. If you can’t make that one, Sunday morning, September 20th looks very similar – clean, cross-off breeze, 4ft from the NW. And then on Monday morning, September 21st, we get those glassy conditions again with a 4ft NW swell. These mornings are all solid options for a clean, uncrowded session.

Now, looking further out to the last week, there’s some serious size on the cards, but it comes with problems. From Tuesday, September 22nd, the swell really fills in – 6ft from the NW with a 12-second period. The energy is strong, hitting 918. But the wind is cross and fresh, making it a mess. By Friday morning, September 25th, it’s a big one: 6ft at 15 seconds, with the energy cranking to a strong 1261. This is a proper long-period groundswell. The problem is the wind remains a strong cross-shore from the north. It’s going to be powerful and challenging. This one is for the experts only. At this size and with that long period, Reef is going to be heavy and unpredictable. If you’re a beginner, stay well away.

After that, things drop out again. The long-range stuff is promising in size, but the wind hasn’t looked good.

So, in short: Sunday morning, September 13th is your best bet for the cleanest, most classic conditions with that long-period groundswell. The following weekend and Monday mornings (19th, 20th, and 21st) are also fun, just a little smaller and less powerful. Don’t bother with the middle of this week, and if you’re looking at the 25th, make sure you’re no one’s liability.

Rusty out.

Short Range Forecast

Mostly dry. Warm (max 28°C on Sun morning, min 19°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 27°C on Mon morning, min 17°C on Tue night). Winds increasing (light winds from the SSW on Mon morning, strong winds from the N by Tue night).

Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
1
2
1
2
1
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
NNW
6
0.9
NNW
6
0.3
WNW
9
0.5
WNW
10
0.6
WNW
9
0.4
NW
15
0.9
NW
13
1.3
NW
12
1.3
NW
12
1
NW
11
0.9
NW
11
0.5
WNW
8
0.3
NW
12
0.5
NW
12
0.7
NW
11
0.9
WNW
11
0.1
SW
13
1.5
NW
12
0.1
S
18
0.1
S
16
0.1
SW
16
Wave Graph
Metric surfscale
Energy kJ
74
55
16
55
68
80
290
465
427
242
172
40
23
65
117
161
6
593
6
5
10
Wind (km/h)
20
NNE
25
NNW
15
N
10
NNE
15
NW
10
NNE
0
WSW
10
W
5
NNE
5
S
15
WNW
10
N
20
N
30
NNW
40
N
40
N
40
N
25
N
20
NNE
30
N
20
NNE
Wind State
cross-off
cross
cross
cross-off
cross-on
cross-off
glassy
on
cross-off
cross
on
cross
cross
cross
cross
cross
cross
cross
cross-off
cross
cross-off
High Tide
3:38PM3.21m
4:01AM2.96m
4:15PM3.17m
4:36AM2.94m
4:51PM3.04m
5:10AM2.86m
5:26PM2.85m
5:44AM2.73m
6:02PM2.62m
6:18AM2.55m
6:39PM2.37m
6:56AM2.36m
7:22PM2.13m
Low Tide
9:53PM-0.07m
10:02AM0.03m
10:27PM-0.02m
10:38AM0.08m
11:00PM0.11m
11:13AM0.19m
11:32PM0.29m
11:48AM0.36m
00:04AM0.50m
12:25PM0.57m
00:38AM0.73m
1:07PM0.80m
1:19AM0.95m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
7:15
7:16
7:16
7:18
7:18
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:51
7:50
7:47
7:46
7:45
7:43
 mm
Temp °C
22
22
20
26
25
25
28
27
26
27
24
21
22
21
18
19
19
20
24
23
21
Feels °C
19
19
21
25
24
23
27
25
24
25
22
21
20
19
14
13
13
17
19
18
18
  • 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 Reef Surf forecast

The above surf forecast table for Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Reef can be found by selecting the local surf guide option on the grey menu. Our 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 (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 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.

Are you planning a holiday in Ericeira? If you are looking for accommodation near Reef, camping, hotels and holiday cottages in Ericeira, consider staying in Torres Vedras which is 19 km (12 miles) away. Other places in and around Ericeira where you can find information about places to rent, and car hire include Sintra which is 21 km (13 miles) away, Rio de Mouro, Cacem and Loures.

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