Praia das Macas Surf Break

Lat Long: 38.81° N 9.48° W

Praia das Macas Surf Forecast and Surf Report

Issued: 12 pm 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Praia das Macas sea temperature is
21.4° C
0.9° 

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


Praia das Macas surf forecast from 12 Aug 2026:

  • Best quality surf: Monday 17 Aug, 10AM (local time) - 7.5ft (2.3m), 9s period, NNW swell with glassy winds.
  • Most powerful swell: Sunday 16 Aug, 7AM (local time) - 10ft (3.0m), 9s period, NNW swell with 1,418 kJ wave energy.
  • Next surfable swell (1★+): Monday 17 Aug, 10AM (local time) - 7.5ft (2.3m), 9s period with NNW swell.

Best Forecast Surf Conditions for Praia das Macas this week:

The surf forecast for Praia das Macas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 10AM. The primary swell is predicted to be 2.3m and 9s period with a secondary swell of 0.1m and 15s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Praia das Macas in the next 16 days are 3.0m 9s and forecast to arrive on Sunday (Aug 16) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 16s period and expected on Monday (Aug 17) at 10PM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Mon 17th Aug)7.5ft (2.3m) 9s
Best Surf10AM (Mon 17th Aug)7.5ft (2.3m) 9s
Most Powerful 7AM (Sun 16th Aug)10ft (3.0m) 9s

Table - best surf conditions forecast for Praia das Macas over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s get straight into it. The next 16 days at Praia das Macas are a real mixed bag. We’ve got a persistent run of cross-onshore winds that’s going to mess up a lot of the surf, but there’s a very narrow window where conditions line up just right. The water temperature is 71°, which is about average for this time of year, so no surprise there.

The first few days are a write-off. Wednesday the 12th through to Saturday the 15th of August, the wind is cross-onshore and building, with swell height climbing from 3 ft up to 8 ft. The combined energy starts at 173 and rockets to 985, but the wind makes it messy and poor. Definitely not worth paddling out.

Sunday the 16th, the swell sticks around 8 ft to 8 ft, with a strong 1117 energy reading on the morning, but the wind is still cross-onshore and choppy. The morning is a “marginal” call, but it’s not clean enough.

Now, here’s the standout. On Monday the 17th of August, we get a clear winner. The morning is glassy – ENE wind at 3 mph, dead offshore. The swell is a solid 8 ft from the NNW with a 9-second period, and the combined energy is 879. This is the best window in the whole outlook. The break is a consistent, exposed beach, so that 8 ft swell will be powerful. It’s a bit on the bigger side for beginners, but for intermediate and above, it’s going to be a great session. Keep in mind this spot is exposed to the NW, and the swell direction is NNW, which is a good match. The afternoon starts to get onshore and messy, so get in early.

After that, the wind turns cross-onshore again from Tuesday the 18th through to the end of the outlook. The swell drops to 5 ft to 6 ft, then builds back up to well over 8 ft by the 22nd and 23rd, with energy readings hitting 1707. But the cross-onshore wind and choppy conditions are a consistent theme. From the 20th of August onwards, the wind is fresh to strong, and the surf is all cross-onshore and messy. The last few days, the 24th to the 27th, are more of the same – poor with onshore wind and lumpy conditions. There’s a long gap of poor surf from the 18th until the end of the forecast period. Honestly, from the 20th onward, the swell is big but the wind is so cross-onshore at a beach break that it might be more interesting for kite surfing than paddle surfing.

The only real standout is Monday morning, the 17th of August. That’s the one to circle. For the rest of the 16 days, it’s a tough run.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Wed morning, min 19°C on Wed night). Winds increasing (light winds from the N on Wed morning, strong winds from the N by Fri night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Mon afternoon, min 20°C on Sat morning). Winds decreasing (strong winds from the NNW on Sat afternoon, calm by Mon morning).

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
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
3
0
2
3
1
0
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
WNW
10
0.9
WNW
10
0.9
WNW
10
0.9
WNW
10
1
WNW
10
0.9
WNW
10
0.9
WNW
9
1.7
NNW
9
2
NNW
7
2.4
NNW
8
2.5
NNW
8
3
NNW
9
2.5
NNW
9
2.3
NNW
9
2.5
NNW
9
2.3
NNW
9
2
NNW
9
1.6
NNW
8
1.7
NNW
8
1.6
NNW
8
1.3
NNW
8
Wave Graph
Metric surfscale
Energy kJ
120
158
150
154
218
163
130
475
400
751
973
1168
1107
840
1032
859
589
336
414
361
217
Wind (km/h)
20
N
25
NNW
30
N
20
N
25
NNW
30
N
30
N
35
NNW
40
NNW
40
N
40
NNW
40
N
10
N
20
NNW
25
N
5
ENE
10
WNW
20
N
10
N
10
WSW
10
NNW
Wind State
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross
glassy
on
cross-on
cross
cross-on
cross-on
High Tide
3:10PM3.11m
3:38AM2.85m
3:53PM3.20m
4:19AM2.88m
4:35PM3.20m
4:59AM2.85m
5:14PM3.09m
5:38AM2.76m
5:53PM2.90m
6:15AM2.62m
6:32PM2.65m
6:54AM2.45m
7:13PM2.39m
Low Tide
9:29PM-0.05m
9:37AM0.07m
10:11PM-0.10m
10:18AM0.04m
10:50PM-0.07m
10:57AM0.08m
11:28PM0.05m
11:36AM0.20m
00:04AM0.23m
12:15PM0.37m
00:40AM0.45m
12:56PM0.58m
1:18AM0.68m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:48
6:50
6:50
6:52
6:52
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:37
8:35
8:34
8:32
8:31
8:30
8:29
 mm
Temp °C
21
21
20
21
21
20
21
21
20
21
20
20
22
22
21
23
24
23
24
23
23
Feels °C
20
19
17
20
20
17
19
17
16
17
15
15
22
21
19
25
23
23
25
24
24
  • 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 Praia das Macas Surf forecast

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

Praia das Macas is 9 km (6 miles) from Sintra. If you plan a holiday in Lisboa, 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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