Surf Forecasts:
Praia das Macas surf forecast from 4 Sep 2026:
- Best quality surf: Friday 4 Sep, 10AM (local time) - 2.5ft (0.7m), 8s period, WNW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 4PM (local time) - 6ft (1.9m), 10s period, NNW swell with 643 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 10AM (local time) - 2.5ft (0.7m), 8s period with WNW 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 Friday (Sep 04) at 10AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.5m and 5s. 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 1.9m 10s and forecast to arrive on Tuesday (Sep 08) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Fri 4th Sep) | 2.5ft (0.7m) 8s |
| Best Surf | 10AM (Fri 4th Sep) | 2.5ft (0.7m) 8s |
| Most Powerful | 4PM (Tue 8th Sep) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s take a look at what’s cookin’ for the next couple of weeks.
Right off the bat, you can see the pattern. The first week or so is a bit of a write-off. The wind is just a mess – mostly cross-on or cross, and it's stiff. For a spot like Praia das Macas, which is exposed to the NW, that’s a real bummer. We’re looking at a lot of choppy, lumpy conditions with the swell energy sitting anywhere from moderate to strong (103 to 745), but it’s all blown out. The first real glimmer of hope doesn’t show up until Monday the 14th of September.
Now, the standout session in this whole outlook is Wednesday morning, the 16th of September. The forecast is calling for a clean 7 ft swell from the NNW, with a light cross-off breeze from the SE. The combined energy is strong (610), and it’s gonna be clean. That’s the one to circle on the calendar. It’s a solid, punchy size for a beginner-friendly spot, but the direction is working well for the break. It’s the best on offer.
Right behind it, Tuesday morning the 15th of September is also looking good. You’ve got a 7 ft swell from the NNW with offshore SE winds. A little smaller, but still clean and with good energy (476). That’s a solid session too.
Then, Thursday morning the 17th of September is a real gem. We’re talking glassy conditions – no wind – and a 6 ft swell from the NNW. The energy is moderate (497), and it’s going to be smooth as butter. That’s a morning to have the wax on the board early.
For the rest of the second week, it’s a bit of a mixed bag. The afternoons get a bit sketchy with onshore or cross-shore winds, but the mornings on the 14th, 15th, 16th, and 17th are all very promising. There’s a gap of poor conditions from the 4th to the 13th, so you’ll be waiting a while, but the payoff is there.
Look, for a beach break like this, a long period groundswell (like the 12-second stuff we saw on the 7th) can sometimes make the waves a bit too straight and closing out, but the shorter period swells (7-8 seconds) we’re seeing in the second week will be more manageable and more fun. The water temp is about where it should be for this time of year, so no worries there.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 30°C on Thu night, min 20°C on Sun afternoon). Winds increasing (light winds from the NNE on Thu night, fresh winds from the N by Sun afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Mon morning, min 18°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | NW 13 | NW 12 | NW 11 | W 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NNW 10 | NNW 9 | NNW 8 | NNW 8 | NNW 11 | NNW 10 | NNW 12 | NNW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 59 | 51 | 101 | 101 | 106 | 380 | 442 | 304 | 423 | 598 | 532 | 350 | 292 | 643 | 449 | 268 | 254 | 196 | 168 | 260 | 256 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on |
High Tide | 8:06AM2.30m | 8:48PM2.14m | 9:30AM2.21m | 10:27PM2.08m | 11:05AM2.27m | 11:58PM2.19m | 12:23PM2.48m | 1:04AM2.39m | 1:21PM2.73m | 1:55AM2.59m | 2:09PM2.95m | 2:38AM2.76m | 2:52PM3.09m | 3:17AM2.87m | |||||||
Low Tide | 2:23PM0.76m | 2:57AM0.88m | 4:00PM0.84m | 4:37AM0.91m | 5:40PM0.72m | 6:04AM0.77m | 6:52PM0.49m | 7:07AM0.55m | 7:45PM0.26m | 7:56AM0.34m | 8:29PM0.07m | 8:38AM0.17m | 9:09PM-0.04m | ||||||||
 | |  |  | | | | | | | | | |  |  | | | | | | | |
 | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 8:04 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 30 | 28 | 25 | 23 | 22 | 21 | 19 | 20 | 20 | 18 | 19 | 19 | 20 | 20 | 19 | 19 | 19 | 19 | 19 |
Feels °C | 26 | 26 | 27 | 25 | 23 | 22 | 21 | 19 | 16 | 17 | 17 | 14 | 16 | 16 | 19 | 18 | 16 | 15 | 16 | 13 | 15 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | NNW 5 | WNW 9 | WNW 9 | WNW 9 | NW 13 | NW 12 | NW 11 | W 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | — | — | WNW 8 | NNW 12 | NNW 11 | NNW 10 | NNW 12 | NNW 11 |
| kJ | 59 | 8 | 101 | 101 | 106 | 380 | 442 | 304 | 423 | 598 | 532 | 350 | 292 | — | — | 22 | 15 | 196 | 168 | 260 | 256 |
Swell 2 Height (m) Direction Period (s) | NNW 5 | WNW 10 | SW 13 | NNW 5 | NW 16 | WNW 9 | SW 12 | WNW 9 | NW 10 | NNW 10 | — | — | — | — | — | — | — | WNW 8 | NNW 13 | W 7 | W 7 |
| kJ | 15 | 37 | 7 | 17 | 85 | 101 | 5 | 44 | 173 | 61 | — | — | — | — | — | — | — | 37 | 116 | 26 | 15 |
Swell 3 Height (m) Direction Period (s) | SW 13 | SW 13 | N 12 | SW 12 | SW 12 | SW 12 | S 12 | W 18 | WNW 9 | NW 10 | — | — | — | — | — | — | — | N 16 | W 8 | — | W 10 |
| kJ | 7 | 7 | 3 | 6 | 6 | 6 | 3 | 24 | 26 | 24 | — | — | — | — | — | — | — | 5 | 29 | — | 2 |
Wind waves Height (m) Direction Period (s) | — | WNW 8 | NNW 5 | — | NNW 6 | NNW 6 | NW 8 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NNW 10 | NNW 9 | NNW 8 | NNW 8 | NNW 5 | NNW 4 | NNW 9 | NNW 5 |
| kJ | — | 51 | 17 | — | 17 | 19 | 82 | 44 | 56 | 62 | 78 | 102 | 176 | 643 | 449 | 268 | 254 | 39 | 16 | 180 | 46 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 54 | 14 | 14 | 15 | 11 | 14 | 205 | 14 | 21 | 377 | 15 | 15 | 409 | 160 | 160 | 449 | 222 | 22 | 562 | 562 |
Best forecast wave conditions in Lisboa | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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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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