Surf Forecasts:
Praia das Macas surf forecast from 8 Sep 2026:
- Best quality surf: Sunday 13 Sep, 7AM (local time) - 2.5ft (0.8m), 13s period, NW swell with glassy winds.
- Most powerful swell: Thursday 10 Sep, 7PM (local time) - 6ft (1.9m), 10s period, NNW swell with 763 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 10AM (local time) - 4.5ft (1.3m), 8s 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 10AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.5m 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 1.9m 10s and forecast to arrive on Thursday (Sep 10) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 12th Sep) | 4.5ft (1.3m) 8s |
| Best Surf | 7AM (Sun 13th Sep) | 2.5ft (0.8m) 13s |
| Most Powerful | 7PM (Thu 10th Sep) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright, folks, Rusty here with a look at the surf ahead for Praia das Macas.
We've got a bit of a rough start to this outlook, with the first proper call not coming in until early next week. The next several days are going to be a write-off with messy, onshore winds and lumpy conditions. There's a good stretch of poor surf from Tuesday the 8th right through till Saturday the 12th. The wind is just not playing ball, and the swell is junky.
We finally see a glimmer of hope on Sunday, September 13th. The morning is looking like the standout of the entire forecast. We’ve got a glassy clean 4ft swell from the NW with a juicy 13-second period. The combined energy is strong (703). This is a proper groundswell that’s going to offer up some clean, lined-up sets. The water temp is sitting at 68°F, which is pretty much average for this time of year, so nothing crazy there. This is the window to get out there. Expect those clean, glassy waves to be worth the wait. It’s a consistent spot so there should be waves to go around, but with conditions this good, expect the crowds to show up.
The following Monday morning, September 14th, also looks promising with another glassy morning. Swell is a touch smaller at 4ft from the NW with a solid 12-second period. Combined energy is moderate (378). Another great call for a clean session.
After that, the wind turns onshore again for most of the second week, knocking the surf quality right back down. We get another little window on Saturday the 19th with some glassy 3ft NW swell, but it's short-lived. The next notable day is Sunday, September 20th, with a clean 4ft NW swell on the morning glass-off. Again, good for a session. The rest of the period is a mixed bag of small, poor surf.
So, to sum it up: hold tight through the end of this week, the real action is on Sunday and Monday the 13th and 14th. Get on it then.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Tue afternoon, min 18°C on Tue morning). Winds increasing (light winds from the NNW on Tue night, strong winds from the N by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Sun morning, min 19°C on Fri morning). Winds decreasing (fresh winds from the N on Fri morning, calm by Sat morning). | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | WNW 10 | WNW 9 | NW 9 | NNW 6 | NNW 8 | NNW 8 | NNW 8 | NW 11 | NNW 10 | NNW 7 | NNW 6 | NNW 6 | NNW 8 | NNW 8 | NW 15 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 281 | 180 | 152 | 95 | 382 | 459 | 336 | 263 | 612 | 176 | 160 | 107 | 186 | 186 | 147 | 437 | 435 | 503 | 350 | 224 | 117 |
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-on | cross | cross-on | cross | cross | cross-on | cross | glassy | cross-on | cross | glassy | cross-on | cross | cross-off | cross-on | cross-on |
High Tide | 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 | 4:29AM2.90m | 4:44PM2.99m | 5:03AM2.81m | 5:19PM2.80m | ||||||||
Low Tide | 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 | 10:30AM0.08m | 10:52PM0.10m | 11:05AM0.19m | 11:23PM0.28m | ||||||||
 | |  | | |  | | | | | | | | | | | | | | | | |
 | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — |
 | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 20 | 18 | 18 | 18 | 19 | 19 | 18 | 20 | 20 | 21 | 24 | 24 | 26 | 27 | 25 | 27 | 23 | 22 | 23 |
Feels °C | 17 | 19 | 20 | 13 | 12 | 12 | 16 | 15 | 12 | 16 | 17 | 21 | 23 | 22 | 23 | 25 | 24 | 25 | 23 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 9 | NW 9 | NW 8 | NW 12 | NW 10 | NW 11 | NW 11 | W 7 | NNW 10 | W 7 | NNW 9 | NNW 8 | WNW 9 | NNW 7 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 |
| kJ | 281 | 180 | 152 | 95 | 6 | 65 | 185 | 263 | 4 | 96 | 4 | 17 | 186 | 50 | 147 | 437 | 435 | 503 | 350 | 224 | 117 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 13 | N 15 | NW 12 | NW 10 | WNW 7 | W 10 | W 7 | W 8 | W 11 | WNW 10 | NW 18 | W 9 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | N 6 |
| kJ | — | — | — | 4 | 4 | 39 | 80 | 10 | 2 | 4 | 1 | 9 | 52 | 12 | 41 | 94 | 66 | 62 | 54 | 42 | 17 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | WNW 8 | — | — | W 9 | — | W 7 | SW 13 | NW 12 | NW 15 | NW 9 | NNW 8 | S 11 | W 9 | W 9 | WNW 9 |
| kJ | — | — | — | — | — | — | 11 | — | — | 2 | — | 4 | 7 | 6 | 137 | 40 | 64 | 2 | 6 | 14 | 15 |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 4 | — | NNW 6 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 10 | NNW 7 | NNW 6 | NNW 6 | — | NNW 8 | — | — | — | — | — | — | — |
| kJ | 24 | 16 | — | 74 | 382 | 459 | 336 | 249 | 612 | 176 | 160 | 107 | — | 186 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 21 | 115 | 285 | 587 | 115 | 15 | 573 | 83 | 35 | 569 | 20 | 14 | 203 | 14 | 0 | 160 | 14 | 0 | 14 | 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.
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