The Reef Surf Break

Lat Long: 38.93° N 9.42° W

The Reef Surf Forecast and Surf Report

Issued: 6 am 04 Aug 2026 (local time)

Forecast update in  hr  min

Today's The Reef sea temperature is
19.4° C
0.8° 

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


The Reef surf forecast from 4 Aug 2026:

  • Most powerful swell: Friday 7 Aug, 7AM (local time) - 6ft (1.8m), 8s period, NNW swell with 368 kJ wave energy.

Best Forecast Surf Conditions for The Reef this week:

The most powerful waves expected at The Reef in the next 16 days are 1.8m 8s and forecast to arrive on Friday (Aug 07) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 12s period and expected on Thursday (Aug 06) at 1PM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 7AM (Fri 7th Aug)6ft (1.8m) 8s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s in store for the next couple of weeks.

Well, I gotta be straight with you – this is a tough run. The whole 16-day window looks pretty grim for a proper surf. The wind is just never our friend, hammering that NNW direction almost constantly, and it’s always cross or cross-on. The swell is there on and off, but the conditions just ruin it. We’re looking at a long stretch of poor surf, with a glimmer of something rideable right at the very end.

The first real pulse of size comes through on Thursday, the 6th of August, with a 6ft swell from the NNW, but it’s a short-period 7 seconds and the wind is a fresh 22 mph cross-breeze. That’s lumpy, choppy mess. The combined energy is moderate at 375, but it’s not one to paddle out for. That kind of blown-out, short-period chop is more for the kites. The swell sticks around for a couple of days, but the wind never lets up.

We go through a flat spell from the 8th through the 14th. The swell drops right off, barely a ripple, with the combined energy sinking as low as 72 (weak). The wind is still blowing, so it’s just a skunked-out period. Nothing to even look at.

Onto the 15th of August, Saturday, we get a real spike. The swell jumps to 8ft from the NNW, but it’s a short 8-second period and the wind is a cross-on 16 to 19 mph. The combined energy is strong at 952, but it’s just a raw, onshore mess. The Reef is exposed, so it’s taking the full brunt. This is definitely expert-only if anyone’s crazy enough, and honestly, it looks more like a washing machine than a wave. The 16th, Sunday, is the same story with 8ft to 10ft swell – same wind, same mess.

Now, the only thing that gets my heart beating a little is the morning of Monday, the 18th of August. The guidance says The Reef is a 4/5 star spot, which is rare. The swell is a solid 6ft from the NNW with a 9-second period, and the wind is a manageable 12 mph cross-shore. The combined energy is moderate at 635. It’s still a cross-shore chop, but the wind is lighter, and the swell has a bit more shape. The water temp is about average for the time of year, which is par for the course. The crowds are listed as "often," so it’s likely to be busy for a spot that’s still only marginal. But for this whole forecast, that’s the standout. It’s not perfect, but it’s the only window where the numbers don’t scream “stay home.”

Then the 19th of August, Wednesday, shows another 8ft, 9-second swell with a 16 mph cross-wind. The combined energy is very strong at 1192. Again, it’s a raw, powerful, and messy wave. Expert-only territory, and not all that clean.

So, to sum it up: the good news is there’s a lot of swell energy. The bad news is the wind is relentless. The only one I’d even consider a paddle for is the morning of the 18th, and even then, keep your expectations low. The rest of the run, you’re better off waxing the kiteboard.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Tue morning, min 18°C on Wed night). Winds increasing (light winds from the WNW on Tue morning, fresh winds from the NNW by Thu afternoon).

Days 4-6 Weather Summary

Mostly dry. Warm (max 21°C on Fri morning, min 18°C on Fri night). Mainly fresh winds.

Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
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
0
0
0
0
0
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)
0.9
WNW
9
0.9
WNW
8
0.8
WNW
8
0.8
WNW
8
0.8
NNW
10
1.4
NNW
9
1.7
NNW
7
1.7
NNW
7
1.7
NNW
7
1.8
NNW
8
1.6
NNW
8
1.2
NNW
6
0.9
NNW
8
0.7
NNW
7
0.5
W
8
0.7
WNW
7
0.6
W
7
0.6
W
7
0.8
NNW
5
1
NNW
6
0.7
NNW
13
Wave Graph
Metric surfscale
Energy kJ
129
118
90
75
117
301
281
273
281
365
276
127
94
57
33
48
42
37
24
58
140
Wind (km/h)
10
WNW
15
WNW
15
NNW
20
N
30
NNW
30
NNW
30
N
35
NNW
30
NNW
25
NNW
30
NNW
20
N
15
NNW
20
NW
10
N
20
NNW
25
NNW
20
NNW
25
NNW
30
NNW
25
NNW
Wind State
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross
High Tide
7:11PM2.61m
7:40AM2.43m
8:02PM2.45m
8:38AM2.33m
9:08PM2.30m
9:51AM2.28m
10:33PM2.23m
11:16AM2.33m
00:00AM2.29m
12:33PM2.50m
1:13AM2.45m
1:37PM2.74m
2:11AM2.63m
Low Tide
12:54PM0.52m
1:25AM0.50m
1:43PM0.64m
2:17AM0.64m
2:47PM0.76m
3:24AM0.77m
4:09PM0.82m
4:48AM0.82m
5:40PM0.74m
6:12AM0.73m
6:58PM0.54m
7:19AM0.55m
7:59PM0.31m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
6:41
6:41
6:43
6:43
6:45
6:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:45
8:45
8:44
8:43
8:40
8:39
8:38
 mm
Temp °C
22
22
21
21
21
19
21
21
19
21
21
19
21
21
20
21
21
20
21
21
19
Feels °C
23
21
22
19
18
16
17
17
16
19
18
17
20
20
21
21
19
19
18
18
17
  • Map Icons:
  • Break
  • 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 The Reef Surf forecast

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

The Reef is 15 km (9 miles) from the city of Sintra. If you plan a holiday in Ericeira, look for hotels and other accommodation in Sintra. Sintra has rooms for a wide range of budgets as well as car hire and transport links.

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