Praia das Macas Surf Break

Lat Long: 38.81° N 9.48° W

Praia das Macas Surf Forecast and Surf Report

Issued: 12 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Praia das Macas sea temperature is
18.4°C
2.3° 

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 Sep 2026:

  • Best quality surf: Thursday 17 Sep, 4AM (local time) - 10ft (3.0m), 10s period, NNW swell with cross-shore winds.
  • Most powerful swell: Thursday 17 Sep, 7AM (local time) - 10ft (3.0m), 10s period, NNW swell with 1,901 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 7AM (local time) - 2ft (0.6m), 14s period with NW 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 Sunday (Sep 13) at 7AM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.9m and 7s. 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 10s and forecast to arrive on Thursday (Sep 17) 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 0.2m 4s period and expected on Monday (Sep 14) at 10AM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sun 13th Sep)2ft (0.6m) 14s
Best Surf 4AM (Thu 17th Sep)10ft (3.0m) 10s
Most Powerful 7AM (Thu 17th Sep)10ft (3.0m) 10s

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


The Lowdown

Alright, let’s get into it. The next couple of weeks start a bit shaky, but there are a few windows that’ll have you keen. The first solid swell doesn’t show up right away, but once it gets going, there are some real gems, especially if you pick your days.

The main spot on the radar is Praia das Macas. It’s a beginner-friendly beach break that’s consistently exposed to NW swell, and most of the action will come from that direction. Water temp is sitting about average for the time of year, so no surprises there.

We’re looking at a slow start. Saturday the 12th is a write-off – small, messy, and choppy with cross-shore winds. Best to give it a miss. Sunday the 13th morning is where it starts to get interesting. That long-period NW groundswell at 13 seconds pushes in clean with a light cross-offshore wind from the SSE. Swell is only 3ft, but clean and rideable – a good one for the longboard or a fun mid-length. Wave energy is moderate (344).

Monday the 14th morning is absolute glass. Zero wind, clean 3ft NW swell, 11-second period. That’s a dreamy morning for a learner or anyone wanting some silky, easy waves. The energy is mellow but fun (283). Monday afternoon gets a bit bumpy, so make the most of the dawn.

Then it goes a bit average. Tuesday and Wednesday see strong onshore winds and building, messy swell. By Wednesday the 16th we’re talking 10ft to 12ft of blown-out, cross-onshore chaos (energy up at 1621-1795) – that’s kite-surf territory, not paddle surfing. Thursday the 17th and Friday the 18th are still rough, with big wind and lumpy conditions, though Thursday morning has a big 8ft NW swell (1630 energy) but cross-shore winds and chop. Keep the board in the car.

Now, here’s the standout. Monday the 21st of September morning is the real deal. Clear skies, glassy conditions (ENE light air, zero wind), and a solid 4ft NW groundswell with a very long 16-second period. The energy is strong at 1084. This is the sort of setup that can really turn it on at a point or reef, but at a beach break like Praia das Macas, that long period can make the waves a bit straight. Still, for an experienced surfer, the power and cleanliness will be exceptional. This is your best look of the whole run.

Tuesday the 22nd is okay but wind-affected, and Wednesday the 23rd morning serves up another glassy session – 4ft NW swell, 11-second period, NE light airs. That’s solid for a beginner-friendly day with clean conditions. Energy is moderate (396).

Thursday the 24th morning is another glassy one, with a clean 3ft, 15-second NW groundswell. Small but beautiful if you’ve got the right board.

After that, it fades again. The last few days of the month are small and choppy with onshore winds, so don’t expect much.

Bottom line: Surf is minimal until Sunday the 13th, then we get a few clean windows. The absolute standout is Monday 21st September morning – glassy, strong, long-period groundswell. Get on it early. Crowds are possible at Praia das Macas, so factor that in.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Sat afternoon, min 20°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Mon night, min 17°C on Tue night). Winds increasing (light winds from the N on Mon night, strong winds from the N by Tue night).

Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
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
2
0
1
2
0
0
0
0
0
0
0
0
2
0
0
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
NNW
7
1.1
NNW
7
1
NNW
8
0.8
NW
13
1.1
NW
12
1.3
NW
12
1
NW
11
0.8
NW
11
0.9
NW
10
0.6
NW
10
1.3
NNW
5
2.3
NNW
7
3
NNW
9
3.5
NNW
9
3
NNW
9
2.5
NNW
10
2.4
NNW
10
2
NNW
10
2.1
NNW
9
1.9
NNW
9
1.4
NW
14
Wave Graph
Metric surfscale
Energy kJ
111
111
120
250
330
433
233
162
134
58
81
487
1621
1795
1574
1630
1050
688
688
548
813
Wind (km/h)
10
N
20
NNW
20
N
10
SSE
10
W
10
NNE
0
SSW
15
NNW
20
N
25
N
40
N
45
N
50
N
45
N
45
N
20
NNE
40
N
30
N
20
NNE
30
N
25
N
Wind State
cross
cross-on
cross
cross-off
on
cross
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross
cross
cross-on
cross
High Tide
4:08PM3.11m
4:29AM2.90m
4:44PM2.99m
5:03AM2.81m
5:19PM2.80m
5:36AM2.68m
5:54PM2.57m
6:10AM2.50m
6:31PM2.32m
6:48AM2.31m
7:14PM2.08m
7:37AM2.11m
8:15PM1.88m
Low Tide
9:54AM0.03m
10:19PM-0.02m
10:30AM0.08m
10:52PM0.10m
11:05AM0.19m
11:23PM0.28m
11:40AM0.36m
11:55PM0.49m
12:17PM0.56m
00:29AM0.71m
12:58PM0.78m
1:10AM0.93m
1:54PM0.99m
2:10AM1.11m
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>
7:16
7:16
7:16
7:18
7:18
7:20
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:50
7:47
7:46
7:45
7:44
7:42
 mm
Temp °C
25
26
25
26
25
26
24
24
24
19
19
18
18
19
19
21
19
19
22
20
20
Feels °C
23
23
22
25
23
24
24
22
21
18
15
12
12
12
12
17
12
13
17
15
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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