Surf Forecasts:
Praia das Macas surf forecast from 24 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 7AM (local time) - 5ft (1.5m), 7s period, WNW swell with glassy winds.
- Most powerful swell: Friday 28 Aug, 10AM (local time) - 10ft (3.0m), 11s period, WNW swell with 2,005 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 7AM (local time) - 5ft (1.5m), 7s 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 Tuesday (Aug 25) at 7AM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 0.1m and 12s. 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 3.0m 11s and forecast to arrive on Friday (Aug 28) at 10AM. 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 6s period and expected on Tuesday (Aug 25) at 1AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 25th Aug) | 5ft (1.5m) 7s |
| Best Surf | 7AM (Tue 25th Aug) | 5ft (1.5m) 7s |
| Most Powerful | 10AM (Fri 28th Aug) | 10ft (3.0m) 11s |
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 coming down the line for Praia das Macas. Gotta be straight with you – it's a tough start. The next week and a half is looking pretty grim with onshore winds and messy conditions. The only real glimmer of hope is a window right at the very end of this 16-day run. So, don't get your hopes up until we're well into September.
We've got a big stretch of poor surf from now all the way through to around the 7th of September. The wind's just not playing ball, nearly always blowing from the cross-on or cross-shore directions, so it's going to be choppy and lumpy. There will be some decent swell pulses, especially around the 28th of August when a NW groundswell hits with a long period of 11 seconds, but with 18 mph cross-on winds, it's just a messy mess. The combined energy on the 28th morning hits 2005 (strong energy), but you wouldn't want to be out there. The water's about average for this time of year, sitting around 66.6°.
Finally, on Monday the 8th of September, things take a sharp turn. Tuesday morning the 8th looks like the standout. We've got a clean, clean forecast. Winds swing around to a light SSE at just 6 mph, blowing cross-offshore. That's the golden ticket. You'll see a clean 5.6ft groundswell rolling in from the west with a very long period of 15 seconds, packing a punch with moderate-to-strong energy (1527). This setup is excellent for experienced surfers. The waves will be well-shaped and powerful, perfect for a point break or reef set-up. Keep in mind that crowds are possible here at Praia das Macas.
Tuesday afternoon the 8th looks like the wind will turn cross-on and it'll get choppy again, so that Tuesday morning window is the one to circle on your calendar. Trust me, it's been a long wait, but that should be a proper session.
Short Range ForecastModerate rain (total 19mm), heaviest on Wed morning. Warm (max 22°C on Mon morning, min 20°C on Mon night). Winds decreasing (strong winds from the SW on Mon morning, calm by Mon night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Thu morning. Warm (max 21°C on Thu afternoon, min 18°C on Fri afternoon). Mainly fresh winds. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | WSW 8 | W 8 | WNW 7 | WNW 7 | WNW 7 | WNW 6 | WSW 5 | W 7 | W 8 | W 8 | W 8 | WNW 10 | WNW 11 | NW 11 | NW 10 | NW 9 | NW 9 | NNW 8 | NNW 8 | NNW 8 | NW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1047 | 719 | 292 | 178 | 124 | 62 | 70 | 243 | 393 | 558 | 475 | 979 | 2005 | 1622 | 809 | 388 | 302 | 264 | 137 | 183 | 112 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-off | cross | cross-on | cross | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 1:21PM2.30m | 1:47AM2.21m | 2:01PM2.49m | 2:23AM2.38m | 2:35PM2.67m | 2:55AM2.53m | 3:07PM2.82m | 3:27AM2.65m | 3:38PM2.93m | 3:58AM2.73m | 4:10PM2.98m | 4:29AM2.78m | 4:42PM2.96m | ||||||||
Low Tide | 7:41PM0.72m | 7:46AM0.71m | 8:17PM0.54m | 8:21AM0.53m | 8:49PM0.37m | 8:53AM0.37m | 9:20PM0.23m | 9:25AM0.25m | 9:51PM0.13m | 9:56AM0.18m | 10:21PM0.08m | 10:29AM0.15m | 10:53PM0.10m | ||||||||
 | |  |  |  |  |  | |  | |  | | | |  | | | | | | | |
 | 6:58 | — | — | 7:00 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — |
 | — | 8:21 | — | — | 8:19 | — | — | 8:17 | — | — | 8:15 | — | — | 8:15 | — | — | 8:13 | — | — | 8:12 | — |
mm | 3 | 1 | — | — | — | — | 12 | — | 3 | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 21 | 21 | 19 | 19 | 18 | 19 | 19 | 18 | 20 | 20 | 19 |
Feels °C | 19 | 19 | 21 | 21 | 21 | 21 | 18 | 19 | 19 | 16 | 16 | 17 | 15 | 16 | 13 | 15 | 15 | 13 | 17 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | N 8 | N 8 | WNW 7 | WNW 7 | WNW 7 | WNW 6 | NNW 6 | W 7 | W 8 | SW 11 | NW 8 | WNW 10 | WNW 11 | NW 11 | NW 10 | S 10 | — | — | NW 8 | W 12 | NW 9 |
| kJ | 5 | 5 | 292 | 178 | 124 | 62 | 15 | 243 | 393 | 5 | 100 | 979 | 2005 | 1622 | 509 | 2 | — | — | 63 | 3 | 112 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SSW 6 | SW 12 | SW 12 | WNW 10 | NW 9 | NNW 6 | SW 11 | — | S 11 | NNW 9 | — | — | — | S 10 | — | — | W 13 | S 10 | S 10 |
| kJ | 7 | 6 | 20 | 6 | 6 | 10 | 3 | 8 | 5 | — | 2 | 45 | — | — | — | 2 | — | — | 3 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | SW 13 | N 8 | — | W 10 | SW 12 | NW 10 | SW 11 | — | — | — | S 11 | — | — | — | — | — | — | S 11 | — | — |
| kJ | — | 6 | 5 | — | 2 | 6 | 4 | 5 | — | — | — | 2 | — | — | — | — | — | — | 2 | — | — |
Wind waves Height (m) Direction Period (s) | WSW 8 | W 8 | — | — | — | — | WSW 5 | W 6 | — | W 8 | W 8 | — | — | — | NW 10 | NW 9 | NW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 4 |
| kJ | 1047 | 719 | — | — | — | — | 70 | 132 | — | 558 | 475 | — | — | — | 809 | 388 | 302 | 264 | 137 | 183 | 36 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 420 | 259 | 14 | 0 | 9 | 66 | 586 | 425 | 126 | 334 | 203 | 127 | 126 | 261 | 15 | 15 | 420 | 35 | 14 | 420 | 15 |
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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