Surf Forecasts:
Praia das Macas surf forecast from 5 Sep 2026:
- Most powerful swell: Monday 7 Sep, 10AM (local time) - 5ft (1.6m), 12s period, W swell with 799 kJ wave energy.
Best Forecast Surf Conditions for Praia das Macas this week:
The most powerful waves expected at Praia das Macas in the next 16 days are 1.6m 12s and forecast to arrive on Monday (Sep 07) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 15s period and expected on Friday (Sep 11) at 7AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Mon 7th Sep) | 5ft (1.6m) 12s |
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 cookin’ for the next couple of weeks.
The honest truth is, this stretch is a real struggle for decent surf. The first week and a half is a write-off thanks to persistent onshore and cross-shore winds that just won’t let up. The swell is there, but it’s a mess. We’ve got a solid gap from now until the 14th of September where the conditions are just too poor to recommend paddling out. The wind is coming out of the north consistently, and it’s just chopping everything up.
The only real light at the end of the tunnel, and I mean the only one, is Monday the 14th of September. The morning at Praia das Macas is a fleeting moment of glory. The wind goes completely glassy, calm, and the swell is a solid 8ft from the NNW. The combined energy is strong, hitting 929, and the period is a nice 9 seconds. The water temp is sitting at 68°, which is about average for this time of year. This is a proper window where the stars might align, but it’s a Monday morning – you’ll need to be there before the afternoon wind shifts onshore. This is the standout, the one to chase.
The Tuesday the 15th morning has a brief clean-up with offshore wind from the ESE, but the swell at 5ft from the NW is a bit smaller and less organised. It’s a backup option if you miss the Monday glass.
For the rest of the period, it’s a frustrating mix of onshore winds, choppy conditions, and only marginal windows. The swell tries to push through but the wind kills it. If you’re a beginner, the 8ft on Monday might be a bit too much, and the 8ft on the 17th is only for the experienced crew. The short periods (7-8 seconds) on most days mean weak, wind-affected waves.
So, to sum it up: set your alarm for the morning of the 14th. That’s your best bet. Everything else is a grind.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Sat afternoon, min 18°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Tue night, min 17°C on Wed night). Winds increasing (moderate winds from the NW on Tue night, strong winds from the N by Wed night). | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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 9 | NW 13 | NW 12 | NW 11 | W 14 | W 12 | W 12 | WNW 11 | WNW 10 | WNW 9 | WNW 9 | NW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 106 | 380 | 442 | 304 | 515 | 799 | 628 | 423 | 286 | 180 | 135 | 322 | 560 | 627 | 534 | 424 | 368 | 498 | 302 | 200 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross |
High Tide | 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 | 3:31PM3.15m | 3:54AM2.92m | |||||||
Low Tide | 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 | 9:17AM0.06m | 9:45PM-0.07m | ||||||||
 |  | | | | | | | |  | | | | | | | | | | | |
 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — |
 | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 22 | 21 | 21 | 19 | 20 | 20 | 18 | 19 | 19 | 20 | 18 | 18 | 18 | 18 | 18 | 18 | 20 | 20 | 19 |
Feels °C | 23 | 21 | 19 | 19 | 16 | 16 | 17 | 14 | 17 | 17 | 19 | 13 | 12 | 12 | 13 | 12 | 11 | 15 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | NW 13 | NW 12 | NW 11 | W 14 | W 12 | W 12 | WNW 11 | WNW 10 | WNW 9 | WNW 9 | NW 8 | N 15 | NNW 13 | NNW 8 | NW 11 | NNW 10 | NNW 8 | W 7 | W 7 |
| kJ | 106 | 380 | 442 | 304 | 515 | 799 | 628 | 423 | 286 | 180 | 135 | 25 | 4 | 65 | 534 | 179 | 166 | 498 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | NW 16 | WNW 9 | NW 8 | WNW 9 | NW 10 | NNW 10 | — | — | — | — | NW 9 | WNW 8 | — | — | NNW 12 | WNW 7 | W 7 | W 7 | W 8 | W 8 |
| kJ | 86 | 101 | 65 | 44 | 177 | 61 | — | — | — | — | 20 | 22 | — | — | 177 | 11 | 4 | 4 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | WNW 18 | W 9 | NW 10 | — | — | — | — | — | — | — | — | W 8 | — | — | W 9 | — | W 11 |
| kJ | 6 | 6 | 5 | 61 | 42 | 24 | — | — | — | — | — | — | — | — | 10 | — | — | 2 | — | 2 |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | NNW 4 | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 4 | NW 8 | NNW 8 | NNW 8 | — | NNW 8 | NNW 8 | — | NNW 7 | NNW 7 |
| kJ | 15 | 12 | 10 | 24 | 52 | 46 | 75 | 55 | 51 | 38 | 8 | 322 | 560 | 627 | — | 424 | 368 | — | 302 | 200 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 14 | 14 | 14 | 420 | 14 | 14 | 203 | 14 | 21 | 398 | 115 | 581 | 449 | 115 | 109 | 463 | 285 | 22 | 468 | 30 |
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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