Praia das Macas Surf Break

Lat Long: 38.81° N 9.48° W

Praia das Macas Surf Forecast and Surf Report

Issued: 12 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Praia das Macas sea temperature is
19.8° 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 18 Aug 2026:

  • Best quality surf: Tuesday 18 Aug, 10AM (local time) - 4.5ft (1.4m), 8s period, NNW swell with cross-offshore winds.
  • Most powerful swell: Sunday 23 Aug, 7AM (local time) - 8ft (2.5m), 8s period, NNW swell with 887 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 18 Aug, 10AM (local time) - 4.5ft (1.4m), 8s 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 Tuesday (Aug 18) at 10AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.3m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Praia das Macas in the next 16 days are 2.5m 8s and forecast to arrive on Sunday (Aug 23) 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 4s period and expected on Wednesday (Aug 19) at 1PM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Tue 18th Aug)4.5ft (1.4m) 8s
Best Surf10AM (Tue 18th Aug)4.5ft (1.4m) 8s
Most Powerful 7AM (Sun 23rd Aug)8ft (2.5m) 8s

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


The Lowdown

G’day, Rusty here, and I’m gonna level with ya – this outlook for Praia das Macas is a bit of a head-scratcher. We’ve got a solid run of swell on the cards, but the wind just won’t play ball for most of it. The first real chance to wet a line comes in on Tuesday morning, the 18th of August.

Tuesday morning, the 18th, we’re looking at the pick of the whole forecast, and it’s a bittersweet one. Swell is a clean 5ft from the NNW, with a short period of 8 seconds, giving us a moderate wave energy (260). But the wind is a gentle S breeze at 15 km/h, blowing cross-offshore. That’s gonna keep the surface glassy and the lines clean. It’s a beginner-friendly spot, and with conditions like this, it’ll be a fun, uncrowded morning – though crowds are possible here. The water temp is about average for this time of year.

After that, it’s a long, grim stretch. From Tuesday afternoon all the way through to Saturday morning, the 29th of August, the wind is a mess. Mostly cross-on or onshore, building from a gentle breeze up to a strong breeze by the 23rd. The swell hangs around, hitting 8ft on Sunday morning the 23rd and again on Monday the 31st, but those NNW winds at 35-40 km/h will chop it up something shocking. That kind of size with that wind is more of a kite-surfing setup than a paddle session. The period stays short, mostly 6-10 seconds, so the energy is there but it’s ugly.

There is a tiny glimmer on Saturday morning, the 29th of August. The swell is 5ft from the NNW, period 9 seconds, and the wind drops to a light WNW at 10 km/h, coming straight onshore. It’s marginal, but it’s the only other time the wind isn’t howling. The wave energy is strong (450), but it’s a “marginal” call – maybe worth a look if you’re desperate.

Sunday, the 30th of August, the swell jumps to 8-8ft from the NNW, but with a moderate cross-shore wind, it’s still messy. By Monday, the 31st, the swell is 8ft with a light cross-on wind – again, marginal, and that size is for experts only. The period is 8-9 seconds, so it’s not gonna be a thing of beauty.

Honestly, if you can get out on Tuesday morning, do it. Everything else in the 16-day window is either blown out or too big and messy. The good news? This break is consistent, so it won’t stay flat for long, but this run is a tough one.

Rusty

Short Range Forecast

Mostly dry. Warm (max 22°C on Mon night, min 20°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Sat morning, min 19°C on Thu night). Mainly strong winds.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
1
1
0
1
1
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)
1.4
NNW
8
1.3
NNW
8
1.1
NNW
8
0.9
NNW
7
0.8
NNW
7
0.5
WNW
10
0.5
WNW
9
0.5
WNW
9
1.7
NNW
7
1.7
NNW
7
2
NNW
10
1.9
NNW
10
2
NNW
10
1.8
NNW
9
2.3
NNW
8
2.5
NNW
8
2.3
NNW
8
2.1
NNW
8
2
NNW
8
1.7
NNW
8
1.5
NNW
7
Wave Graph
Metric surfscale
Energy kJ
243
202
135
97
67
51
45
44
329
302
763
665
731
549
671
887
672
501
483
327
236
Wind (km/h)
15
S
15
SW
0
WSW
10
SSE
15
SSW
5
NE
5
WSW
15
W
35
N
35
NNW
35
NNW
35
NNW
35
NNW
40
NNW
40
NNW
40
NNW
40
NNW
40
NNW
35
N
25
NNW
35
N
Wind State
cross-off
cross
glassy
cross-off
cross
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
6:54AM2.45m
7:13PM2.39m
7:37AM2.27m
8:01PM2.14m
8:29AM2.10m
9:05PM1.94m
9:44AM1.98m
10:36PM1.85m
11:16AM1.99m
00:04AM1.90m
12:30PM2.12m
1:04AM2.05m
1:21PM2.30m
1:47AM2.21m
Low Tide
12:56PM0.58m
1:18AM0.68m
1:42PM0.79m
2:03AM0.90m
2:42PM0.98m
3:06AM1.07m
4:10PM1.09m
4:41AM1.14m
5:49PM1.05m
6:08AM1.05m
6:56PM0.90m
7:05AM0.89m
7:41PM0.72m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
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>
6:52
6:54
6:54
6:56
6:56
6:58
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:29
8:28
8:25
8:24
8:22
8:22
8:21
 mm
Temp °C
22
22
21
22
22
21
21
22
19
19
19
19
20
19
19
19
19
19
19
20
19
Feels °C
22
22
23
21
23
24
24
22
15
15
14
15
16
13
12
13
13
13
14
17
15
  • 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 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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