Surf Forecasts:
Praia das Macas surf forecast from 2 Sep 2026:
- Best quality surf: Sunday 6 Sep, 7AM (local time) - 4.5ft (1.3m), 12s period, NW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 4PM (local time) - 7ft (2.1m), 10s period, NNW swell with 833 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 7AM (local time) - 2.5ft (0.8m), 9s 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 Saturday (Sep 05) at 7AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.1m and 13s. Another secondary swell of 1.2m and 6s is also forecast. 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 2.1m 10s and forecast to arrive on Tuesday (Sep 08) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 15s period and expected on Wednesday (Sep 02) at 4AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 5th Sep) | 2.5ft (0.8m) 9s |
| Best Surf | 7AM (Sun 6th Sep) | 4.5ft (1.3m) 12s |
| Most Powerful | 4PM (Tue 8th Sep) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright, gather ‘round. Rusty here, and I've been chewing on the charts for Praia das Macas. To be straight up, it's a rough stretch for the first half with nothing but washout conditions, but there are a couple of tiny windows you can chase.
For most of the first week, the wind is our enemy. From the 1st of September right through to the 9th, it's a steady cross-on or onshore breeze, often fresh and strong. The swell is mostly in the 3ft to 5ft range, but it's all short-period, wind-slop junk. The energy is moderate, with combined readings between 109 and over 1000 (430 to 1037). It's gonna be lumpy, choppy, and messy. Honestly, it looks more interesting for kite surfers than us paddle guys. Beginners should sit this entire stretch out. The water temp is 69°, which is about right for this time of year.
There's a brief blip of hope on Saturday morning, the 5th of September. It's a small session. We've got a 2-3ft swell from the WNW with a 9-second period, and the wind goes glassy. The combined energy is a weak 152, but that glassy wind is a treat. For a moment, it could be clean, small, and fun on a longboard. That's your only real flash of quality in the first week.
Things stay flat and messy right through until Sunday the 13th of September. The wind is stuck from the north, and the waves are either too small or too raw. Swells hover from 2ft to 5ft with short periods and the combined energy is moderate (112 to 580). It's not good.
Finally, the best bet of the whole 16-day stretch looks like the morning of Sunday the 13th of September. We get a 3-4ft swell from the NNW, with an 8-second period. The combined energy is 203. The key here is the wind: a light cross-offshore from the SSE, which should clean the faces up nicely. This is the standout. It's not big, but with light offshores at a consistent spot like Praia das Macas, it should offer some fun, clean lines. Crowds can be *sometimes* a thing here, so paddle out early.
Monday the 14th of September morning is another one to watch, with a 3-4ft swell from the WNW and a 10-second period, and a light cross-offshore wind from the south. The forecast calls it "marginal," so temper your expectations.
The very end of the run, on Wednesday morning the 16th of September, has a bigger 5-6ft swell from the NW with a long 12-second period, with a cross-shore wind. The combined energy is a strong 933. It has some power behind it, but that cross-shore wind will put a texture on the waves. For experienced surfers, this could offer the most size, but the quality is far from guaranteed.
So, the bottom line: the whole first week is a write-off until the second weekend. Your best chances are the mornings of the 13th and 14th, with that 3-4ft clean swell. The end of the run on the 16th has more size but less clean conditions. It's not a classic September, but there's a couple of sessions to be had.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Thu morning, min 18°C on Tue afternoon). Winds decreasing (fresh winds from the N on Tue afternoon, light winds from the NNE by Wed night). | Days 5-7 Weather SummaryMostly dry. Warm (max 34°C on Fri afternoon, min 19°C on Sun night). Winds increasing (calm on Sat night, fresh winds from the N by Mon morning). | |||||||||||||||||||
Tue 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 9 | NNW 9 | NNW 8 | NNW 7 | NNW 6 | NNW 7 | NNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | NW 14 | NW 12 | NW 11 | WNW 15 | WNW 13 | WNW 12 | WNW 11 |
Wave Graph | ||||||||||||||||||||
430 | 404 | 181 | 143 | 88 | 88 | 79 | 64 | 59 | 44 | 90 | 101 | 88 | 224 | 511 | 363 | 381 | 669 | 579 | 380 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross-on | on | cross | cross-off | glassy | cross | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on |
High Tide | 5:55PM2.75m | 6:17AM2.61m | 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 | |||||||
Low Tide | 00:04AM0.31m | 12:22PM0.41m | 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 | ||||||||
— | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | |
8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 18 | 19 | 19 | 23 | 29 | 29 | 27 | 27 | 34 | 32 | 30 | 31 | 28 | 27 | 24 | 20 | 20 | 20 | 18 |
Feels °C | 15 | 14 | 17 | 17 | 21 | 26 | 26 | 23 | 24 | 29 | 29 | 30 | 30 | 29 | 26 | 22 | 17 | 17 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | NW 8 | NW 8 | NW 8 | NNW 7 | NNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | NNW 6 | NW 12 | NW 11 | WNW 15 | WNW 13 | WNW 12 | WNW 11 |
22 | 21 | 53 | 32 | 20 | 88 | 79 | 64 | 59 | 44 | 90 | 101 | 88 | 40 | 511 | 363 | 381 | 669 | 579 | 380 | |
Swell 2 Height (m) Direction Period (s) | — | — | N 7 | SSW 16 | SSW 15 | NW 9 | WNW 8 | SSW 14 | SW 13 | WNW 10 | SW 13 | WNW 5 | NW 12 | WNW 9 | SW 12 | WNW 8 | NW 10 | WNW 8 | — | — |
— | — | 8 | 24 | 21 | 21 | 41 | 19 | 7 | 37 | 7 | 17 | 35 | 90 | 5 | 38 | 216 | 22 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 15 | — | NW 10 | SSW 14 | SSW 14 | — | NW 8 | SW 13 | N 12 | N 11 | NW 16 | NW 14 | SW 12 | WNW 19 | W 9 | WNW 8 | — | — |
— | — | 23 | — | 4 | 20 | 20 | — | 3 | 7 | 3 | 2 | 11 | 224 | 5 | 35 | 39 | 14 | — | — | |
Wind waves Height (m) Direction Period (s) | NNW 9 | NNW 9 | NNW 8 | NNW 7 | NNW 6 | — | — | NNW 6 | NNW 5 | NNW 5 | NNW 5 | N 6 | NNW 6 | — | NNW 6 | NNW 4 | NNW 4 | NNW 10 | NNW 6 | NNW 6 |
430 | 404 | 181 | 143 | 88 | — | — | 39 | 23 | 24 | 28 | 32 | 51 | — | 28 | 21 | 36 | 332 | 160 | 219 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 420 | 30 | 14 | 204 | 16 | 11 | 15 | 14 | 76 | 16 | 20 | 0 | 1 | 7 | 14 | 203 | 14 | 14 | 21 | 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.











