Surf Forecasts:
Praia das Macas surf forecast from 29 Aug 2026:
- Most powerful swell: Monday 31 Aug, 10PM (local time) - 6.5ft (2.0m), 10s period, NNW swell with 772 kJ wave energy.
Best Forecast Surf Conditions for Praia das Macas this week:
The most powerful waves expected at Praia das Macas in the next 16 days are 2.0m 10s and forecast to arrive on Monday (Aug 31) 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 0.2m 16s period and expected on Tuesday (Sep 01) at 7AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Mon 31st Aug) | 6.5ft (2.0m) 10s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what we’re looking at for the next couple of weeks.
Straight up, it’s gonna be a tough slog for the first week or so. The wind is a constant issue, mostly coming from the north and northwest as a cross-onshore breeze, messing up the surface. Swell heights run from 3 ft to 6 ft, but with that wind, it’s all chop and no fun. The combined wave energy is moderate (198 to 523), but it doesn’t matter when the waves look like washing machines.
Our only spot is Praia das Macas. It’s a beginner-friendly beach, but the conditions are terrible for everyone. Water temp is 68°, which is about 2° cooler than normal—nothing unusual.
August 31st (Monday) and September 1st (Tuesday) are the worst, with wind howling at 22 to 25 mph. This is kite-surfing weather, not paddle-surfing weather.
September 5th (Saturday) sees a light breeze, but the swell is small (around 4 ft) and the surf is still rated as poor. Not worth it.
September 6th (Sunday) is the first day things start to look less terrible. Swell hits 5 ft from the NW with a 12-second period, and the energy jumps to 698. The wind is cross-shore, so there’s a cross-chop, but the wave comment says "marginal." For a more experienced surfer, this might be a session to gamble on.
September 7th (Monday) brings a long-period groundswell (13 seconds) from the WNW, with high energy (544). The wind is still cross-shore and messy. This swell is better suited for a reef or point break.
The first real standout is on September 11th (Friday). Mark it down, but with a pencil. Swell is 4 ft from the WNW with a very long 15-second period. Wave energy is huge at 823. Wind is light cross-onshore at 6 mph, so it’ll be lumpy but not destroyed. This long-period groundswell at a beach could be tricky, but there will be some bombs if you’re in the right spot.
The absolute gem shows up on September 13th (Sunday) morning. Glassy conditions—no wind at all. The swell is small at 2 ft, but the period is a dreamy 15 seconds from the NW. The wave comment says "expect good surf conditions." This is the best window in the whole 16 days. For a beginner-friendly break, this is the time to be out there. The afternoon gets a bit choppy again, so don’t sleep in.
Best on offer: Sunday morning, September 13th at Praia das Macas. Glassy, long-period groundswell. It’s a learner-friendly wave that morning. The rest of the forecast is mostly a waiting game.
First week is a bust. Second week has some real promise, especially that glassy Sunday. Keep an eye on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Sun morning, min 17°C on Mon night). Winds increasing (light winds from the NNW on Sat night, fresh winds from the N by Mon night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Tue afternoon, min 18°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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 9 | NW 9 | NW 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 10 | NNW 10 | NW 9 | NNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NW 14 | NW 12 | NW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 471 | 300 | 211 | 191 | 423 | 230 | 179 | 315 | 756 | 516 | 523 | 315 | 392 | 302 | 214 | 183 | 178 | 153 | 221 | 428 | 347 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | 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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 4:10PM2.98m | 4:29AM2.78m | 4:42PM2.96m | 5:02AM2.77m | 5:17PM2.89m | 5:38AM2.72m | 5:55PM2.75m | 6:17AM2.61m | 6:39PM2.56m | 7:04AM2.46m | 7:33PM2.34m | 8:06AM2.30m | 8:48PM2.14m | ||||||||
Low Tide | 10:21PM0.08m | 10:29AM0.15m | 10:53PM0.10m | 11:03AM0.19m | 11:27PM0.17m | 11:40AM0.27m | 00:04AM0.31m | 12:22PM0.41m | 00:47AM0.49m | 1:14PM0.59m | 1:41AM0.70m | 2:23PM0.76m | 2:57AM0.88m | ||||||||
 | |  | | | | | | |  | | | | | | | | | | | | |
 | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — |
 | — | 8:13 | — | — | 8:12 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 19 | 20 | 20 | 18 | 19 | 19 | 18 | 18 | 19 | 18 | 19 | 19 | 18 | 19 | 19 | 18 | 20 | 20 | 19 |
Feels °C | 18 | 16 | 17 | 18 | 17 | 14 | 14 | 14 | 13 | 13 | 14 | 13 | 17 | 16 | 15 | 18 | 16 | 14 | 19 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | NW 9 | S 10 | NW 8 | NW 8 | W 13 | NW 9 | NW 9 | NW 10 | SW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 16 | SSW 15 | NNW 7 | SSW 14 | WNW 8 | NNW 7 | NW 12 | NW 11 |
| kJ | 471 | 2 | 211 | 191 | 3 | 230 | 179 | 315 | 10 | 23 | 21 | 21 | 23 | 24 | 21 | 183 | 20 | 28 | 121 | 428 | 347 |
Swell 2 Height (m) Direction Period (s) | S 10 | — | — | W 13 | — | — | W 11 | SW 16 | — | — | — | — | SSW 15 | — | SSW 15 | SSW 14 | SSW 14 | SSW 14 | NW 14 | NW 8 | SW 13 |
| kJ | 2 | — | — | 4 | — | — | 21 | 11 | — | — | — | — | 23 | — | 21 | 20 | 20 | 19 | 221 | 17 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 18 | S 11 | — | — | — | — | — | — | — | SSW 14 | — | NW 16 | WNW 8 | SW 13 | — |
| kJ | — | — | — | — | — | — | 12 | 2 | — | — | — | — | — | — | — | 20 | — | 11 | 35 | 7 | — |
Wind waves Height (m) Direction Period (s) | — | NW 9 | — | NNW 3 | NW 9 | NNW 5 | NNW 5 | NNW 6 | NNW 10 | NW 9 | NNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | — | NNW 7 | NNW 7 | — | NNW 7 | NNW 7 |
| kJ | — | 300 | — | 3 | 423 | 74 | 91 | 110 | 756 | 516 | 523 | 315 | 392 | 302 | 214 | — | 178 | 153 | — | 124 | 128 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 504 | 14 | 14 | 420 | 21 | 222 | 439 | 222 | 222 | 222 | 115 | 22 | 516 | 30 | 20 | 449 | 15 | 14 | 420 | 14 |
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