Surf Forecasts:
Praia das Macas surf forecast from 14 Sep 2026:
- Best quality surf: Thursday 17 Sep, 7AM (local time) - 10ft (3.0m), 10s period, NNW swell with cross-shore winds.
- Most powerful swell: Thursday 17 Sep, 4AM (local time) - 11ft (3.5m), 10s period, NNW swell with 2,216 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 7AM (local time) - 10ft (3.0m), 10s 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 Thursday (Sep 17) at 7AM. The primary swell is predicted to be 3.0m and 10s period. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Praia das Macas in the next 16 days are 3.5m 10s and forecast to arrive on Thursday (Sep 17) at 4AM. 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 11s period and expected on Monday (Sep 21) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 17th Sep) | 10ft (3.0m) 10s |
| Best Surf | 7AM (Thu 17th Sep) | 10ft (3.0m) 10s |
| Most Powerful | 4AM (Thu 17th Sep) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright folks, Rusty here for a look at Praia das Macas. The story is the same, just in feet and miles.
The water is running a cold 66°, which is about 4° colder than normal. A mite chilly, so bring the rubber.
First few days are a bust. Monday the 14th starts with a clean 3 ft NW swell, 11-second period, and light south winds, combined energy at 284. But the afternoon goes to crap with a cross-on wind. Tuesday and Wednesday are full-on. Wednesday sees 10 ft swell with a 45 mph cross-on wind and combined energy shooting to 1356. It’s a total mess.
Thursday the 17th is a monster. 10 ft NW swell, 10 seconds, and a cross wind, with combined energy at 1539. The file says it’s too big for this break. That’s expert-only territory and honestly, better for kite-surfing.
The big standout is Saturday the 19th of September. That morning, we get a clean 6 ft NW groundswell with a very long 14-second period. The combined energy is 1623. The wind is a glassy offshore from the ESE at just 6 mph. This will be pristine, powerful, and offer excellent shape for experienced surfers. Crowds are possible but not likely to be a major issue. This is the one to wait for.
Sunday the 20th is another solid call. A 5 ft NW swell, 12-second period, combined energy at 683, and more clean offshore ESE wind in the morning. Not as big, but still great fun.
Monday the 21st morning gives another clean look with 5 ft NW swell and 13-second period, energy at 814. The wind is light and offshore.
After that, the surf fades. There are a few small, clean days around the 22nd and 23rd, but the swell drops to 2 ft. By the 25th, a 4 ft WNW swell shows up with offshore wind in the morning. Late September on the 27th sees another big pulse of 7 ft W swell, but with a cross-on wind, it’s marginal.
Bottom line: the first week is a dud. Saturday the 19th is the absolute call – clean, long-period, and powerful. Sunday the 20th and Monday the 21st mornings are also very good. After that, it’s a waiting game for the smaller windows.
Rusty, out.
Short Range ForecastMostly dry. Warm (max 25°C on Mon afternoon, min 17°C on Tue night). Winds increasing (light winds from the S on Mon morning, strong winds from the N by Tue night). | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Sat morning, min 18°C on Thu night). Winds decreasing (strong winds from the N on Thu night, light winds from the SW by Sat morning). | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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 11 | NW 11 | NW 10 | NW 10 | NNW 5 | NNW 7 | NNW 9 | NNW 9 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NW 16 | NW 14 | NW 13 | NW 13 | NW 12 | NW 11 | NW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 233 | 162 | 98 | 74 | 80 | 522 | 1356 | 1480 | 1722 | 1539 | 1131 | 1402 | 999 | 698 | 1494 | 1255 | 1613 | 1018 | 683 | 524 | 348 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | off | cross-on | cross-on | off | cross-on | cross |
High Tide | 5:19PM2.80m | 5:36AM2.68m | 5:54PM2.57m | 6:10AM2.50m | 6:31PM2.32m | 6:48AM2.31m | 7:14PM2.08m | 7:37AM2.11m | 8:15PM1.88m | 8:51AM1.96m | 9:54PM1.78m | 10:36AM1.95m | 11:34PM1.85m | ||||||||
Low Tide | 11:05AM0.19m | 11:23PM0.28m | 11:40AM0.36m | 11:55PM0.49m | 12:17PM0.56m | 00:29AM0.71m | 12:58PM0.78m | 1:10AM0.93m | 1:54PM0.99m | 2:10AM1.11m | 3:24PM1.12m | 3:52AM1.20m | 5:17PM1.08m | ||||||||
 | |  | | |  | | | | |  | | | | | | | | | | | |
 | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — |
 | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 22 | 19 | 19 | 18 | 17 | 19 | 19 | 20 | 19 | 18 | 20 | 20 | 23 | 26 | 23 | 23 | 24 | 24 | 25 |
Feels °C | 23 | 23 | 20 | 18 | 14 | 12 | 10 | 12 | 12 | 14 | 12 | 11 | 16 | 16 | 20 | 23 | 20 | 20 | 22 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 11 | NW 10 | NW 10 | NW 11 | WNW 10 | S 13 | SW 13 | NW 12 | NNW 10 | S 12 | SW 16 | NNW 9 | NW 14 | NNW 8 | NW 14 | NW 13 | NW 13 | NW 12 | NW 11 | NW 10 |
| kJ | 233 | 162 | 98 | 74 | 33 | 83 | 3 | 6 | 325 | 1539 | 3 | 10 | 999 | 73 | 547 | 1255 | 1613 | 1018 | 683 | 524 | 348 |
Swell 2 Height (m) Direction Period (s) | NNW 7 | W 9 | W 9 | WNW 8 | WNW 8 | S 13 | S 13 | — | S 12 | S 12 | S 16 | S 11 | NW 16 | NW 18 | NW 16 | NNW 8 | SW 13 | S 13 | S 13 | S 10 | NW 15 |
| kJ | 25 | 39 | 39 | 22 | 13 | 3 | 3 | — | 3 | 3 | 5 | 2 | 10 | 119 | 1494 | 360 | 7 | 3 | 3 | 2 | 137 |
Swell 3 Height (m) Direction Period (s) | WNW 9 | NW 6 | S 10 | WNW 12 | S 13 | — | — | — | — | S 18 | — | — | SW 15 | SW 14 | SW 14 | SW 14 | — | S 10 | S 13 | SW 13 | S 12 |
| kJ | 26 | 8 | 2 | 14 | 4 | — | — | — | — | 6 | — | — | 9 | 8 | 8 | 8 | — | 2 | 3 | 6 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | NNW 3 | NNW 4 | NNW 5 | NNW 7 | NNW 9 | NNW 9 | NNW 10 | — | NNW 9 | NNW 9 | — | NNW 9 | — | — | — | — | — | — | — |
| kJ | — | — | 6 | 10 | 80 | 522 | 1356 | 1480 | 1722 | — | 1131 | 1402 | — | 698 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 14 | 14 | 14 | 823 | 449 | 705 | 439 | 109 | 22 | 439 | 109 | 22 | 14 | 14 | 0 | 177 | 14 | 0 | 62 | 14 |
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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