
Surf Forecasts:
Praia das Macas surf forecast from 6 Sep 2026:
- Best quality surf: Sunday 13 Sep, 7AM (local time) - 3ft (0.9m), 14s period, NW swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 10PM (local time) - 5ft (1.5m), 14s period, NW swell with 849 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 7AM (local time) - 3.5ft (1.1m), 6s 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 Saturday (Sep 12) at 7AM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.4m and 10s. 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 1.5m 14s and forecast to arrive on Sunday (Sep 13) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Saturday (Sep 12) at 4AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 12th Sep) | 3.5ft (1.1m) 6s |
| Best Surf | 7AM (Sun 13th Sep) | 3ft (0.9m) 14s |
| Most Powerful | 10PM (Sun 13th Sep) | 5ft (1.5m) 14s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a good look at what’s on the cards for Praia das Macas. To be straight with you, the next week and a bit is a write-off. We’ve got a long, frustrating gap with nothing worth paddling out for, thanks to persistent cross and cross-onshore winds and a lumpy, messy ocean. The first real glimmer of hope doesn’t show up until Sunday the 13th of September, so you’ll be doing a lot of watching and waiting.
The water temp is sitting at 68°, which is about what you’d expect for this time of year – nothing unusual there.
The standout window is the morning of Sunday, 13th September. The conditions are set to be a beauty. It’s glassy, calm as can be, with a solid NW groundswell running at 4 ft. The swell period is a long 13 seconds, which means proper lines and plenty of energy (combined energy of 708). That long period stuff out of the NW should wrap into the beach setup nicely, but remember, it'll be a bit more lined up than usual. The wind is dead calm, so it’s going to be clean as a whistle. This is the one to mark on your calendar. The only downside is that Praia das Macas can get crowded sometimes, so get there early.
The other session worth dragging yourself out of bed for is Thursday morning, 17th September. Another glassy morning, with a 4 ft NW swell at 10 seconds. The energy is more moderate (246), but it’ll be clean and fun on the high tide. Not a standout, but a good chance to get wet.
Looking further out, Friday morning, 18th September, also looks glassy with a similar 4 ft NW swell, so that’s another decent option if you miss the others. The following Monday morning, the 21st, sees a light cross-offshore breeze and a 4 ft NW swell – that’s clean, but the swell is a bit smaller and weaker (266).
For the rest of the time, the winds are too strong or onshore, and the swell is either too small or too messy. It’s a lean run, but that Sunday morning on the 13th is the real gem.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Mon morning, min 17°C on Mon night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Sat morning, min 18°C on Wed afternoon). Winds decreasing (strong winds from the N on Wed afternoon, calm by Fri night). | |||||||||||||||||||
Sun 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 11 | W 14 | W 12 | W 12 | WNW 11 | WNW 10 | WNW 9 | NW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 10 | NNW 8 | NNW 8 | NNW 7 | NNW 6 | NNW 7 | NW 15 |
Wave Graph | ||||||||||||||||||||
304 | 515 | 799 | 628 | 423 | 281 | 180 | 152 | 384 | 441 | 638 | 513 | 319 | 540 | 311 | 250 | 121 | 96 | 108 | 147 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | glassy | cross-on | cross |
High Tide | 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 | 3:31PM3.15m | 3:54AM2.92m | 4:08PM3.11m | ||||||||
Low Tide | 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 | 9:17AM0.06m | 9:45PM-0.07m | 9:54AM0.03m | 10:19PM-0.02m | |||||||
— | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | |
8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — | — | 7:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 21 | 21 | 19 | 19 | 20 | 20 | 18 | 18 | 18 | 21 | 20 | 18 | 24 | 23 | 25 | 28 | 27 | 29 |
Feels °C | 17 | 16 | 18 | 18 | 16 | 16 | 18 | 20 | 13 | 12 | 12 | 17 | 16 | 13 | 21 | 20 | 21 | 25 | 22 | 24 |
Swell 1 Height (m) Direction Period (s) | NW 11 | W 14 | W 12 | W 12 | WNW 11 | WNW 10 | WNW 9 | NW 9 | NW 14 | NW 12 | NNW 13 | NNW 8 | NW 11 | W 7 | NNW 8 | W 7 | NNW 10 | NNW 6 | WNW 9 | NW 15 |
304 | 515 | 799 | 628 | 423 | 281 | 180 | 152 | 7 | 6 | 32 | 513 | 258 | 4 | 311 | 4 | 18 | 96 | 49 | 137 | |
Swell 2 Height (m) Direction Period (s) | WNW 9 | NW 10 | NNW 10 | — | — | — | — | — | — | N 15 | — | NNW 11 | W 7 | W 10 | W 7 | W 8 | WNW 10 | WNW 10 | NW 16 | W 9 |
44 | 177 | 61 | — | — | — | — | — | — | 4 | — | 115 | 9 | 2 | 4 | 1 | 11 | 54 | 11 | 41 | |
Swell 3 Height (m) Direction Period (s) | WNW 18 | W 9 | NW 10 | — | — | — | — | — | — | — | — | — | — | — | W 9 | S 14 | W 8 | N 9 | NW 12 | NW 11 |
61 | 42 | 24 | — | — | — | — | — | — | — | — | — | — | — | 2 | 4 | 5 | 2 | 6 | 31 | |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | — | NNW 8 | NNW 8 | NNW 8 | — | NNW 8 | NNW 10 | — | NNW 8 | NNW 7 | — | NNW 7 | NNW 8 |
31 | 55 | 46 | 72 | 37 | 39 | 33 | — | 384 | 441 | 638 | — | 319 | 540 | — | 250 | 121 | — | 108 | 147 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 420 | 15 | 14 | 379 | 14 | 15 | 21 | 115 | 285 | 377 | 115 | 22 | 204 | 22 | 11 | 203 | 20 | 0 | 115 | 14 |
Best forecast wave conditions in Lisboa | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.










