
Surf Forecasts:
Praia das Macas surf forecast from 4 Sep 2026:
- Best quality surf: Saturday 5 Sep, 10AM (local time) - 2.5ft (0.8m), 9s period, WNW swell with glassy winds.
- Most powerful swell: Thursday 10 Sep, 7AM (local time) - 5ft (1.6m), 12s period, NW swell with 694 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 10AM (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 10AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.5m and 5s. 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 1.6m 12s and forecast to arrive on Thursday (Sep 10) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 5th Sep) | 2.5ft (0.8m) 9s |
| Best Surf | 10AM (Sat 5th Sep) | 2.5ft (0.8m) 9s |
| Most Powerful | 7AM (Thu 10th Sep) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright, this is Rusty, and we’re taking a hard look at the next 16 days for Praia das Macas. Honestly, it’s a pretty grim run. The whole period is plagued by persistent northerly winds, mostly cross-onshore, which is going to chop up just about everything.
We do have a bit of a standout, but it’s a short-lived window. The best chance for a paddle comes on Saturday morning, September 5th. It’s the only time we see glassy conditions. The swell is a small 3 ft from the WNW with a period of 9 seconds. The combined wave energy is moderate at 121. It’s surfable, but very ordinary. The water temp is sitting at 68°, which is about average for the time of year with a -1° anomaly.
For the rest of the first week, it’s a write-off. From Saturday afternoon through to Monday, September 7th, the wind is on it, and the swell jumps up to 4 ft to 5 ft from the NW with a period of 11 to 12 seconds. That NW direction is actually the optimum for this spot, but the wind is ruining it. The energy is moderate to strong (517 to 777) but it’s all messy, choppy, and lumpy. That 5 ft swell with the 12-second period would be a groundswell, but with the wind, it’s a no-go.
The second week is a long, drawn-out disappointment. There’s a gap of several days where the surf is consistently poor. The wind stays strong from the north, gusting up to 28 mph at times, keeping the waves lumpy and messy. The swell sticks around 3 ft to 4 ft from the WNW and NW, but the energy is moderate to strong (277 to 784). The 16-second period swell on Tuesday, September 15th is a very long period groundswell, but with 28 mph winds, it’s just a mess. It’s the kind of setup that looks more interesting for kite surfing than paddle surfing.
The only other flicker of hope is right at the very end. Friday morning, September 18th, we get a brief clean window with a light cross-offshore breeze from the ENE and a tiny 2 ft swell from the NW. The energy is weak (99), but it’s clean. Then Saturday morning, September 19th, the wind drops to glassy again, but the swell is even smaller at 2 ft from the NW. It’s surfable but very weak.
Crowds are sometimes an issue here, but honestly, with this forecast, I don’t think you’ll have to worry about anyone else being out. The bottom line: if you’re desperate, get your dawn patrol on Saturday, September 5th, or the very end of the run. Otherwise, it’s a long wait for the next decent swell.
Rusty.
Short Range ForecastMostly dry. Warm (max 34°C on Fri afternoon, min 18°C on Sun night). Winds increasing (calm on Sat morning, fresh winds from the N by Mon morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Mon afternoon, min 17°C on Mon night). Mainly fresh winds. | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 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 9 | WNW 9 | WNW 9 | NW 13 | NW 12 | NW 11 | W 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | WNW 10 | NW 9 | NW 8 | NW 11 | NW 12 | NNW 12 | NNW 11 | NNW 11 |
Wave Graph | ||||||||||||||||||||
44 | 101 | 101 | 106 | 380 | 442 | 304 | 423 | 608 | 550 | 439 | 292 | 196 | 155 | 132 | 493 | 301 | 636 | 573 | 397 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | 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 | cross-on | cross |
High Tide | 8:48PM2.14m | 9:30AM2.21m | 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 | |||||||
Low Tide | 2:57AM0.88m | 4:00PM0.84m | 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 | ||||||||
— | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | |
8:04 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 34 | 29 | 27 | 25 | 23 | 22 | 21 | 19 | 20 | 20 | 18 | 19 | 19 | 20 | 19 | 19 | 19 | 20 | 20 | 19 |
Feels °C | 32 | 28 | 27 | 23 | 22 | 21 | 18 | 16 | 16 | 17 | 14 | 16 | 15 | 19 | 17 | 17 | 17 | 18 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 9 | WNW 9 | WNW 9 | NW 13 | NW 12 | NW 11 | W 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | WNW 10 | NW 9 | NW 8 | NNW 14 | NW 10 | NNW 12 | NNW 11 | NNW 11 |
44 | 101 | 101 | 106 | 380 | 442 | 304 | 423 | 608 | 550 | 439 | 292 | 196 | 155 | 132 | 140 | 213 | 636 | 573 | 397 | |
Swell 2 Height (m) Direction Period (s) | WNW 10 | SW 13 | NNW 5 | NW 16 | WNW 9 | NW 8 | WNW 9 | NW 10 | NNW 10 | — | — | — | — | — | NNW 16 | — | NW 12 | WNW 8 | W 7 | W 7 |
37 | 7 | 14 | 86 | 101 | 70 | 44 | 173 | 61 | — | — | — | — | — | 26 | — | 301 | 19 | 17 | 8 | |
Swell 3 Height (m) Direction Period (s) | NW 5 | N 12 | SW 12 | SW 12 | NNW 6 | SW 12 | WNW 18 | WNW 9 | NW 10 | — | — | — | — | — | — | — | WNW 8 | — | — | — |
8 | 3 | 6 | 6 | 18 | 5 | 30 | 26 | 24 | — | — | — | — | — | — | — | 11 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NNW 5 | — | NNW 5 | — | — | NNW 4 | NNW 5 | NNW 6 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 5 | NNW 4 | NW 11 | NNW 4 | — | — | — |
— | 20 | — | 17 | — | — | 28 | 64 | 84 | 106 | 69 | 77 | 81 | 50 | 25 | 493 | 25 | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 14 | 14 | 0 | 14 | 14 | 14 | 203 | 15 | 15 | 377 | 15 | 109 | 325 | 14 | 14 | 420 | 14 | 20 | 204 | 20 |
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.










