
Surf Forecasts:
Praia das Macas surf forecast from 4 Aug 2026:
- Most powerful swell: Thursday 6 Aug, 4AM (local time) - 4.5ft (1.4m), 9s period, NNW swell with 311 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 1.4m 9s and forecast to arrive on Thursday (Aug 06) 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 12s period and expected on Thursday (Aug 06) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Thu 6th Aug) | 4.5ft (1.4m) 9s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a proper look at what the next couple of weeks have in store for us at Praia das Macas. I gotta be straight with you – it’s a tough stretch. The whole 16-day window is one long, frustrating gap with almost no surf worth paddling out for. We’re looking at day after day of "poor surf conditions" with cross-onshore winds messing things up. The first real glimmer of hope doesn’t show up until way down the line, on Wednesday, August 19th.
The water is sitting at 67°, which is a bit colder than normal for this time of year – about a degree and a half off the long-term average. Not a massive shock, but you’ll want a decent wetsuit.
For the entire first week and a half, from Tuesday, August 4th right through to Tuesday, August 18th, it’s a write-off. We’ve got small, weak swell (combined energy mostly under 300, often under 150) and the wind is almost always a fresh cross-onshore breeze from the NNW, chopping everything up. On the 6th and 7th, the swell bumps up to about 6ft, but it’s short-period stuff at 7-8 seconds and the wind is still a problem. It’s lumpy, messy, and not worth your time. Even on the 15th and 16th when the swell hits 8ft (combined energy up to 928), that cross-onshore wind just kills it. That size with that wind makes it more of a kite-surfing setup than a paddle session – too big and blown out for a beginner-friendly beach like this.
Now, the one and only standout: Wednesday morning, August 19th. This is the one to circle on the calendar. The wind goes glassy – completely off – and we’ve got a solid 6ft swell from the NW with a 10-second period. Combined energy is a strong 661, so there’s real push behind it. The direction is a decent match for the break’s optimum (NW). For a beach break, that 10-second period is a nice balance – plenty of power without the weird straight lines you get from longer groundswell. This is the best on offer by a long shot. It’s still a beginner-friendly spot, so keep in mind that 6ft is pushing it for total newcomers. And since crowds are marked as "sometimes", expect company if the conditions are as good as they look. The afternoon sees the wind shift onshore again, so make the most of that morning window.
So there you have it. A whole lot of nothing, then one golden morning on August 19th. Lock it in.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Tue afternoon, min 18°C on Wed night). Winds increasing (light winds from the WNW on Tue afternoon, fresh winds from the NNW by Thu afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Sat morning, min 19°C on Fri night). Mainly fresh winds. | |||||||||||||||||||
Tue 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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 8 | NW 9 | NNW 9 | NNW 6 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 8 | NNW 8 | W 8 | WNW 7 | NW 7 | NNW 9 | W 7 | NW 8 | NNW 7 |
Wave Graph | ||||||||||||||||||||
94 | 90 | 88 | 225 | 301 | 203 | 265 | 249 | 276 | 283 | 147 | 81 | 69 | 42 | 61 | 77 | 32 | 28 | 125 | 73 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:03PM2.56m | 7:32AM2.38m | 7:54PM2.40m | 8:30AM2.28m | 9:01PM2.26m | 9:44AM2.23m | 10:26PM2.18m | 11:09AM2.28m | 11:54PM2.25m | 12:27PM2.45m | 1:06AM2.41m | 1:29PM2.69m | 2:04AM2.59m | |||||||
Low Tide | 1:17AM0.49m | 1:35PM0.63m | 2:09AM0.63m | 2:39PM0.75m | 3:17AM0.76m | 4:02PM0.80m | 4:41AM0.80m | 5:34PM0.73m | 6:05AM0.72m | 6:51PM0.53m | 7:12AM0.54m | 7:52PM0.30m | ||||||||
— | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | |
8:45 | — | — | 8:45 | — | — | 8:44 | — | — | 8:43 | — | — | 8:40 | — | — | 8:39 | — | — | 8:38 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 20 | 20 | 19 | 19 | 19 | 19 | 20 | 20 | 19 | 21 | 21 | 21 | 20 | 21 | 20 | 20 | 20 | 19 |
Feels °C | 22 | 22 | 19 | 17 | 16 | 15 | 15 | 15 | 18 | 17 | 17 | 20 | 20 | 22 | 20 | 19 | 18 | 18 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | W 10 | W 7 | W 10 | W 10 | W 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 8 | NW 11 | NW 10 | W 7 | W 7 | W 11 | W 6 |
94 | 90 | 69 | 56 | 26 | 49 | 49 | 46 | 28 | 28 | 26 | 26 | 23 | 42 | 30 | 25 | 22 | 26 | 2 | 19 | |
Swell 2 Height (m) Direction Period (s) | N 9 | NW 11 | NW 9 | SW 12 | W 10 | WNW 7 | S 12 | SW 13 | S 12 | S 12 | S 12 | W 5 | S 11 | NW 12 | S 13 | S 11 | NNW 9 | NNW 8 | S 12 | WNW 10 |
7 | 56 | 88 | 6 | 53 | 9 | 3 | 7 | 3 | 3 | 3 | 2 | 3 | 6 | 3 | 2 | 32 | 28 | 3 | 11 | |
Swell 3 Height (m) Direction Period (s) | NW 12 | SW 12 | W 10 | — | SW 12 | SW 12 | — | — | S 12 | — | — | S 12 | — | N 10 | S 11 | — | W 12 | W 11 | — | NNW 9 |
5 | 6 | 19 | — | 6 | 6 | — | — | 3 | — | — | 3 | — | 2 | 2 | — | 3 | 2 | — | 8 | |
Wind waves Height (m) Direction Period (s) | — | NW 3 | — | NW 9 | NNW 9 | NNW 6 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | WNW 7 | NW 7 | NNW 4 | NNW 4 | NW 8 | NNW 7 |
— | 2 | — | 225 | 301 | 203 | 265 | 249 | 276 | 283 | 147 | 81 | 69 | 30 | 61 | 77 | 16 | 13 | 125 | 73 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 14 | 203 | 30 | 14 | 449 | 285 | 227 | 568 | 115 | 160 | 504 | 325 | 58 | 393 | 20 | 14 | 353 | 115 | 325 | 463 |
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.











