Surf Forecasts:
Praia das Macas surf forecast from 2 Sep 2026:
- Best quality surf: Thursday 3 Sep, 1PM (local time) - 3ft (0.9m), 7s period, NNW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 4AM (local time) - 7.5ft (2.3m), 10s period, NNW swell with 1,004 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 1PM (local time) - 3ft (0.9m), 7s 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 Thursday (Sep 03) at 1PM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 9s. 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 2.3m 10s and forecast to arrive on Tuesday (Sep 08) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 11s period and expected on Sunday (Sep 06) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Thu 3rd Sep) | 3ft (0.9m) 7s |
| Best Surf | 1PM (Thu 3rd Sep) | 3ft (0.9m) 7s |
| Most Powerful | 4AM (Tue 8th Sep) | 7.5ft (2.3m) 10s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s shaping up for Praia das Macas.
Straight up, I’m not gonna sugarcoat it: the first week and a half is a write-off. We’ve got a serious stretch of poor surf conditions from now until around the 12th of September. The wind is howling from the north and north-northwest, mostly cross-onshore, and it’s just making a mess of things. There’s a little window on the morning of the 4th where the wind drops to glassy, but the swell is tiny—only 2ft from the west-northwest—and the energy is weak (81). You might get a few grovelly ones, but it’s nothing to get excited about. The same goes for the morning of the 5th: glassy again, but the swell is still small (3ft) and the energy is moderate (124). It’s surfable, but very ordinary.
The real standout, and the only one I’d call a true highlight, is the morning of Monday the 14th of September. That’s the one. The swell jumps up to 6ft from the west-northwest, with a very long period of 14 seconds. That’s pure groundswell, proper energy—the combined energy is a massive 1331. And the wind? Glassy. That’s the magic combo. This is going to be clean, powerful, and lined up. The water temp is around 68°, which is right about average for this time of year, so no surprises there. The swell direction is from the west-northwest, which is a solid match for the optimum direction here. This is a morning for experienced surfers, and it’s the best on offer by a long shot.
The afternoon of the same day gets a bit messy with the wind turning cross-onshore, and the swell bumps up to 7ft, but it’s not as clean. The morning of the 15th still has some decent size (6ft) and long period (13 seconds), but the cross-shore wind will chop it up. After that, the wind kicks back in strong and we’re back to poor conditions through to the end of the forecast.
So, to keep it short: the first 11 days are mostly a dud. The morning of Monday the 14th is your standout. Mark it on the calendar. If you can only get out once, that’s the session.
Rusty.
Short Range ForecastMostly dry. Warm (max 32°C on Thu morning, min 19°C on Wed afternoon). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Sat afternoon, min 17°C on Mon night). Winds increasing (light winds from the N on Sat night, strong winds from the N by Tue morning). | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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) | NNW 7 | NNW 6 | NNW 7 | NNW 7 | WNW 9 | WNW 8 | WNW 8 | WNW 9 | WNW 9 | NW 9 | NW 13 | NW 12 | NW 11 | NNW 10 | WNW 11 | WNW 12 | WNW 10 | NNW 8 | NNW 8 | NNW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 124 | 82 | 85 | 62 | 65 | 59 | 44 | 101 | 101 | 211 | 380 | 396 | 298 | 462 | 408 | 541 | 386 | 713 | 623 | 750 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross | glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:39PM2.56m | 7:04AM2.46m | 7:33PM2.34m | 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 | |||||||
Low Tide | 00:47AM0.49m | 1:14PM0.59m | 1:41AM0.70m | 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 | ||||||||
 |  |  | |  |  | | | | | | | | | | | | | | | |
 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — |
 | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 23 | 32 | 31 | 30 | 26 | 30 | 32 | 27 | 23 | 21 | 21 | 20 | 19 | 19 | 19 | 18 | 18 | 18 | 18 |
Feels °C | 17 | 21 | 31 | 28 | 27 | 26 | 27 | 29 | 27 | 23 | 21 | 20 | 18 | 15 | 16 | 14 | 13 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 8 | NNW 7 | NNW 7 | NNW 6 | WNW 8 | WNW 8 | WNW 9 | WNW 9 | NW 15 | NW 13 | NW 12 | NW 11 | WNW 14 | WNW 11 | WNW 12 | WNW 10 | — | — | — |
| kJ | 39 | 20 | 85 | 62 | 37 | 59 | 44 | 101 | 101 | 116 | 380 | 396 | 298 | 156 | 408 | 541 | 386 | — | — | — |
Swell 2 Height (m) Direction Period (s) | SSW 16 | NNW 8 | NW 9 | WNW 8 | WNW 9 | NNW 5 | NNW 5 | SW 13 | NNW 6 | SW 12 | WNW 9 | SW 12 | WNW 9 | WNW 10 | S 11 | — | — | — | — | — |
| kJ | 24 | 11 | 21 | 41 | 65 | 15 | 8 | 7 | 12 | 6 | 127 | 5 | 31 | 55 | 2 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SW 13 | WNW 10 | N 12 | NW 17 | N 9 | N 8 | — | S 12 | S 11 | S 11 | — | — | — | — | — |
| kJ | — | 21 | 20 | 20 | 19 | 7 | 37 | 3 | 11 | 1 | 1 | — | 3 | 2 | 2 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 7 | NNW 6 | — | W 2 | — | — | — | NNW 6 | — | NW 9 | N 6 | NW 5 | NNW 5 | NNW 10 | NNW 5 | NNW 6 | NNW 7 | NNW 8 | NNW 8 | NNW 8 |
| kJ | 124 | 82 | — | 1 | — | — | — | 17 | — | 211 | 15 | 55 | 77 | 462 | 103 | 187 | 307 | 713 | 623 | 750 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 15 | 16 | 1 | 15 | 1 | 0 | 14 | 16 | 0 | 204 | 14 | 14 | 15 | 16 | 203 | 222 | 115 | 203 | 380 | 222 |
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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