Surf Forecasts:
Praia das Macas surf forecast from 15 Aug 2026:
- Best quality surf: Monday 17 Aug, 10AM (local time) - 5.5ft (1.7m), 8s period, NNW swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 1AM (local time) - 8ft (2.4m), 8s period, NNW swell with 829 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 10AM (local time) - 5.5ft (1.7m), 8s 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 Monday (Aug 17) at 10AM. The primary swell is predicted to be 1.7m and 8s period with a secondary swell of 0.1m and 15s. 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 2.4m 8s and forecast to arrive on Sunday (Aug 16) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Wednesday (Aug 19) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Mon 17th Aug) | 5.5ft (1.7m) 8s |
| Best Surf | 10AM (Mon 17th Aug) | 5.5ft (1.7m) 8s |
| Most Powerful | 1AM (Sun 16th Aug) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what Praia das Macas has got cooking for us over the next couple of weeks. We've got a solid run of swell on the way, but the wind is going to be the main character in this story, and honestly, it's not always gonna be a friendly one.
The water temp is sitting at 68.5°, which is pretty much what you'd expect for this time of year.
The whole pattern is driven by a consistent pulse of NNW swell. Our best bet for a proper session is going to be Sunday August 16th. Early morning, the wind drops out completely – glassy conditions with the swell hanging around 6.9ft from the NNW. It's coming in at a 9-second period, so there's some reasonable energy behind it, and it’s going to be clean. This is the standout window, no question. The afternoon looks a bit more choppy, so hit it first light.
Looking at the rest of the period, Monday August 17th morning is also worth a mention. We've got clean 5.6ft surf again with glassy conditions. It's not the biggest, but it’s surfable and tidy. After that, things get messy. From Monday afternoon right through to the 21st of August, the wind kicks up onshore and the quality drops right off. That big pulse of swell from the NNW peaking at 9.8ft on the 21st is going to be a total mess with a 28 mph cross-onshore wind, so that's one for the kite crew, not for paddlers.
For the second week, we’re looking at a lot of the same story. There are some smaller windows around the 27th and 30th of August with clean-ish conditions, but the swell is dropping off significantly. Overall, this forecast is all about making the most of that Sunday and Monday morning window, because the rest of the period is either blown out or underwhelming.
Stay stoked, and don’t sleep on that early Sunday session.
Short Range ForecastLight rain (total 3mm), mostly falling on Sun night. Warm (max 24°C on Mon morning, min 20°C on Sat morning). Winds decreasing (fresh winds from the NNW on Sat afternoon, calm by Mon night). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Tue morning, min 19°C on Thu night). Winds increasing (calm on Tue night, fresh winds from the N by Thu afternoon). | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | NW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | WNW 10 | WNW 9 | WNW 9 | NNW 8 | NNW 8 | NNW 7 | NNW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 281 | 682 | 829 | 700 | 422 | 247 | 361 | 306 | 212 | 223 | 206 | 133 | 67 | 44 | 52 | 46 | 45 | 527 | 288 | 173 | 127 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross-on | cross | cross-off | cross-on | cross-on | cross-off | cross | glassy | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:14PM3.09m | 5:38AM2.76m | 5:53PM2.90m | 6:15AM2.62m | 6:32PM2.65m | 6:54AM2.45m | 7:13PM2.39m | 7:37AM2.27m | 8:01PM2.14m | 8:29AM2.10m | 9:05PM1.94m | 9:44AM1.98m | 10:36PM1.85m | ||||||||
Low Tide | 10:57AM0.08m | 11:28PM0.05m | 11:36AM0.20m | 00:04AM0.23m | 12:15PM0.37m | 00:40AM0.45m | 12:56PM0.58m | 1:18AM0.68m | 1:42PM0.79m | 2:03AM0.90m | 2:42PM0.98m | 3:06AM1.07m | 4:10PM1.09m | ||||||||
 | |  |  | |  |  | |  | | |  | | | | | | | | | | |
 | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — |
 | — | 8:32 | — | — | 8:31 | — | — | 8:30 | — | — | 8:29 | — | — | 8:28 | — | — | 8:25 | — | — | 8:24 | — |
mm | — | — | — | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 23 | 23 | 22 | 24 | 23 | 23 | 22 | 22 | 21 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 20 | 19 |
Feels °C | 19 | 19 | 16 | 24 | 22 | 20 | 24 | 23 | 26 | 23 | 22 | 22 | 22 | 22 | 22 | 23 | 19 | 16 | 14 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | NW 8 | SW 18 | SW 17 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 6 | WNW 9 | WNW 9 | SSW 15 | WNW 9 | NNW 11 | NNW 10 |
| kJ | 281 | 12 | 11 | 700 | 422 | 247 | 361 | 306 | 212 | 223 | 206 | 133 | 67 | 44 | 21 | 46 | 45 | 21 | 26 | 84 | 127 |
Swell 2 Height (m) Direction Period (s) | S 18 | — | S 17 | SW 16 | SW 16 | SW 15 | SW 15 | W 9 | WNW 8 | WNW 8 | W 8 | WNW 8 | WNW 8 | WNW 10 | WNW 10 | NNW 6 | SSW 4 | — | NW 12 | WNW 9 | NNW 6 |
| kJ | 6 | — | 5 | 10 | 11 | 9 | 8 | 6 | 7 | 11 | 10 | 13 | 12 | 11 | 52 | 12 | 2 | — | 24 | 25 | 47 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 18 | SW 15 | SSW 16 | SW 14 | SW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 4 | SSW 4 | SSW 13 | SSW 12 | SSW 15 | SSW 14 | WNW 8 |
| kJ | — | — | — | — | — | — | 12 | 9 | 26 | 7 | 38 | 21 | 20 | 20 | 3 | 2 | 17 | 15 | 21 | 21 | 13 |
Wind waves Height (m) Direction Period (s) | N 7 | NNW 8 | NNW 8 | — | — | — | — | — | — | — | SSW 2 | — | S 3 | S 4 | — | — | NNW 5 | NNW 8 | NNW 8 | NNW 7 | — |
| kJ | 251 | 682 | 829 | — | — | — | — | — | — | — | 1 | — | 1 | 9 | — | — | 19 | 527 | 288 | 173 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 160 | 604 | 22 | 0 | 127 | 20 | 0 | 467 | 62 | 1 | 468 | 1 | 0 | 1 | 15 | 14 | 203 | 222 | 222 | 618 | 222 |
Best forecast wave conditions in Lisboa | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Praia das Macas surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest