Praia das Macas Surf Break

Lat Long: 38.81° N 9.48° W

Praia das Macas Surf Forecast and Surf Report

Issued: 6 am 17 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 17 Aug 2026:

  • Best quality surf: Monday 17 Aug, 10PM (local time) - 4.5ft (1.3m), 8s period, NNW swell with cross-offshore winds.
  • Most powerful swell: Friday 21 Aug, 7PM (local time) - 7ft (2.1m), 8s period, NNW swell with 608 kJ wave energy.
  • Next surfable swell (1★+): Monday 17 Aug, 10PM (local time) - 4.5ft (1.3m), 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 Monday (Aug 17) at 10PM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.2m 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 2.1m 8s and forecast to arrive on Friday (Aug 21) at 7PM. 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 14s period and expected on Wednesday (Aug 19) at 10AM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Mon 17th Aug)4.5ft (1.3m) 8s
Best Surf10PM (Mon 17th Aug)4.5ft (1.3m) 8s
Most Powerful 7PM (Fri 21st Aug)7ft (2.1m) 8s

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


The Lowdown

Alright folks, Rusty here. Let's have a look at what's on the menu for Praia das Macas. Right off the bat, I gotta say the first few days are the only real window for a surf here, and even then, it's a pretty narrow one.

The overall pattern shows the biggest opportunity hits first thing Monday morning, the 17th of August. We’ve got a clean 6ft swell rolling in from the NNW with a period of 8 seconds. The combined energy is a moderate 364. The wind is glassy out of the SE, which is offshore for this spot. That's the recipe for the cleanest waves of the whole stretch. The water temp is sitting at 68°, which is about average for this time of year and feels fine. This is the standout, hands down. The waves will be manageable for the beginner crowd this break is known for, but keep in mind that crowds are sometimes an issue here, so get out early.

Shifting to Tuesday morning, the 18th, the swell holds at 5ft from the NNW, but the wind swings to a cross-offshore from the S. It's still clean, but not as perfect as Monday morning. The energy stays moderate (301). After that, things fall apart quickly. From Tuesday afternoon all the way through to the 28th of August, the wind turns onshore or cross-onshore nearly every session, chopping up what surf there is. The swell fluctuates between 2ft and 7ft, but with that nasty wind, it’s all blown out and messy.

There’s a long stretch of nothing worth paddling out for. Late in the window, on Saturday the 29th of August, a much bigger, long-period groundswell tries to push through. The morning shows a 8ft swell from the NW with a 10-second period, and the combined energy jumps to a very strong 2260. But the wind is cross-shore from the N at 16 mph, and it’s only rated as marginal. That's a big, powerful swell, over 8ft, and with that onshore wind, this is strictly for the experts and even then you’ll be fighting a cross-chop. The afternoon gets even bigger, with a 10ft swell and a 14-second period, energy through the roof at 3892, but the wind is up to 22 mph from the north and onshore. For paddle surfing, this setup looks more interesting for the kite surfers than anyone on a shortboard.

So to wrap it up, your best bet is Monday morning (17th of August) for the glassy, clean conditions. After that, it’s a long run of poor surf until the end of the month, when it gets too big and windy for most. Forecasts can change, but as it stands, aim for that Monday session.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Mon night. Warm (max 25°C on Mon morning, min 20°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 21°C on Thu morning, min 19°C on Thu night). Winds decreasing (fresh winds from the NNW on Thu night, light winds from the NNW by Sat night).

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
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
2
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)
1.7
NNW
8
1.5
NNW
8
1.3
NNW
8
1.5
NNW
8
1.4
NNW
8
1.2
NNW
8
0.9
NNW
8
1
NNW
7
0.8
NNW
7
0.5
WNW
9
0.5
WNW
9
1.1
NW
8
2.1
NW
8
2.1
NNW
8
2
NNW
8
1.8
NNW
8
1.7
NNW
9
1.6
NNW
8
1.6
NNW
8
1.5
NNW
8
1.6
NNW
8
Wave Graph
Metric surfscale
Energy kJ
344
284
202
284
250
168
99
117
50
45
44
171
530
593
451
403
463
336
328
270
300
Wind (km/h)
5
SE
15
NW
5
NNW
15
S
15
SW
10
SW
10
SSW
10
W
10
NW
15
N
35
N
35
NNW
35
NNW
30
NNW
30
NNW
25
NNW
25
NW
20
NNW
15
NNW
15
NW
30
N
Wind State
glassy
on
cross-on
cross-off
cross-on
cross
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
6:32PM2.65m
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
Low Tide
12:15PM0.37m
00:40AM0.45m
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
clear
clear
rain showers
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
light rain
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:54
6:54
6:56
6:56
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:30
8:29
8:28
8:25
8:24
8:22
8:22
 mm
1
2
Temp °C
25
23
21
22
22
21
21
21
21
21
20
20
20
20
19
20
20
19
19
19
20
Feels °C
26
23
23
23
22
23
22
22
22
20
16
15
16
16
15
17
17
16
17
18
16
  • 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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