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: Saturday 19 Sep, 10AM (local time) - 8ft (2.4m), 14s period, NW swell with 2,202 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 7AM (local time) - 3.5ft (1.1m), 11s period with NW 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 Monday (Sep 14) at 7AM. The primary swell is predicted to be 1.1m and 11s period with a secondary swell of 0.5m and 7s. 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 2.4m 14s and forecast to arrive on Saturday (Sep 19) at 10AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 13s period and expected on Sunday (Sep 20) at 4AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 14th Sep) | 3.5ft (1.1m) 11s |
| Best Surf | 7AM (Thu 17th Sep) | 10ft (3.0m) 10s |
| Most Powerful | 10AM (Sat 19th Sep) | 8ft (2.4m) 14s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s have a look at what’s in store for Praia das Macas.
The early part of the period is a bit of a struggle. There’s NW swell coming through, but strong cross-onshore winds are mucking things up, making the surf messy and blown out. That big 10-foot swell on Wednesday 16th September with 28 mph winds is gonna be a beast – more suited to kite surfing than paddling, with the surface all churned up.
The real highlight pops up on Saturday morning, 19th September. We’ve got a solid 8ft NW groundswell, with a period of about 14 seconds – that’s long-period, proper groundswell energy. The wind is glassy out of the ESE at just 3 mph. That means clean, smooth waves with no wind chop. The combined energy is real strong at 2210. This is excellent for experienced surfers only – that size is well past the beginner zone.
Next up, Monday morning, 21st September is another beauty. A 5ft NW swell, also with a 14-second period, and a clean cross-off breeze from the south at 3 mph. You’ll get those lined-up sets with longer waits between them, making it easier to get out the back. Combined energy is 1293 – still in the strong bracket. Perfect for intermediates who want some power without the overhead crowd.
Later in the outlook, Friday 25th September morning shows another pulse: 6ft from the WNW, 14-second period, with a light cross-off wind from the SSE. That’s a promising clean session in the making, with 1275 combined energy.
Water temp is about average for this time of year.
Bottom line: skip the blowout early days, and lock in Saturday 19th and Monday 21st September mornings. The 25th is also worth watching as we get closer. Keep your eyes peeled.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sun night, min 17°C on Tue night). Winds increasing (calm on Sun night, strong winds from the N by Tue night). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Sat morning, min 18°C on Wed night). Winds decreasing (strong winds from the N on Wed night, calm 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 | NW 5 | NNW 8 | NNW 9 | NNW 9 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 8 | NW 15 | NW 14 | NW 13 | NW 13 | NW 12 | NW 11 | NW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 233 | 162 | 98 | 74 | 56 | 566 | 1569 | 1458 | 1657 | 1508 | 1125 | 1042 | 859 | 574 | 1418 | 2202 | 1589 | 1003 | 734 | 582 | 450 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | glassy | cross-on | cross-on | cross-off | on | cross |
High Tide | 5:03AM2.81m | 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 | 23 | 20 | 19 | 18 | 17 | 19 | 19 | 20 | 19 | 18 | 19 | 19 | 22 | 24 | 23 | 24 | 27 | 28 | 29 |
Feels °C | 23 | 23 | 21 | 18 | 16 | 12 | 10 | 12 | 12 | 14 | 13 | 11 | 15 | 15 | 20 | 22 | 21 | 21 | 25 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 11 | NW 10 | NW 10 | NW 11 | WNW 10 | S 13 | SW 13 | WNW 12 | NNW 10 | S 12 | SW 16 | NNW 9 | NW 14 | NW 15 | NW 14 | NW 13 | NW 13 | NW 12 | NW 11 | NW 10 |
| kJ | 233 | 162 | 98 | 74 | 33 | 92 | 3 | 6 | 371 | 1508 | 3 | 10 | 859 | 153 | 1418 | 2202 | 1589 | 1003 | 734 | 582 | 450 |
Swell 2 Height (m) Direction Period (s) | NNW 7 | W 9 | W 9 | WNW 8 | WNW 8 | S 13 | S 13 | — | SW 12 | S 12 | S 16 | S 11 | NW 16 | SW 14 | NNW 8 | SW 14 | SW 13 | S 13 | S 13 | NW 19 | NW 16 |
| kJ | 25 | 39 | 39 | 22 | 13 | 3 | 3 | — | 6 | 3 | 5 | 2 | 10 | 8 | 409 | 8 | 7 | 3 | 3 | 14 | 432 |
Swell 3 Height (m) Direction Period (s) | WNW 9 | NW 6 | S 10 | WNW 12 | S 10 | — | — | — | — | S 18 | S 16 | S 11 | SW 15 | S 11 | SW 14 | — | — | SW 13 | SW 13 | S 10 | S 12 |
| kJ | 26 | 8 | 2 | 14 | 2 | — | — | — | — | 6 | 5 | 2 | 9 | 2 | 8 | — | — | 7 | 7 | 2 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | NNW 3 | NNW 4 | NW 5 | NNW 8 | NNW 9 | NNW 9 | NNW 10 | — | NNW 10 | NNW 9 | — | NNW 8 | — | — | — | — | — | — | — |
| kJ | — | — | 4 | 6 | 56 | 566 | 1569 | 1458 | 1657 | — | 1125 | 1042 | — | 574 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 14 | 14 | 14 | 766 | 604 | 604 | 449 | 109 | 22 | 206 | 109 | 22 | 15 | 14 | 0 | 65 | 14 | 0 | 14 | 1 |
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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