Surf Forecasts:
Praia das Macas surf forecast from 1 Sep 2026:
- Best quality surf: Saturday 5 Sep, 4AM (local time) - 2.5ft (0.8m), 9s period, WNW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 4AM (local time) - 7ft (2.1m), 10s period, NW swell with 990 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 4AM (local time) - 2.5ft (0.8m), 9s period with WNW 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 05) at 4AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.1m and 13s. Another secondary swell of 0.7m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Praia das Macas in the next 16 days are 2.1m 10s and forecast to arrive on Tuesday (Sep 08) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 14s period and expected on Wednesday (Sep 02) at 1AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 5th Sep) | 2.5ft (0.8m) 9s |
| Best Surf | 4AM (Sat 5th Sep) | 2.5ft (0.8m) 9s |
| Most Powerful | 4AM (Tue 8th Sep) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright mate, let’s have a look at what’s on offer.
This forecast is a frustrating one. There’s plenty of northwest swell coming through, but the wind is just horrible for most of it. You’re going to see a lot of swell on the charts, but the conditions are going to ruin it, and honestly, you’re better off finding something else to do for most of it. There is one golden window, but you’ll need to be patient.
We’re looking at a nine-day stretch of bad news before anything worthwhile shows up. The first bit of hope is on the morning of the 5th of September. It’s a *marginal* call, with a 4ft NW swell at 9 seconds and just 235 (moderate energy). The wind is a light cross-on from the WSW, but it’s more of a “maybe” than a “must-do”. The afternoon actually cleans up nicely with a clean, cross-off breeze from the South, but the swell drops to 3ft.
The next morning, the 6th of September, has a bit more going on. The swell is 3ft from the NW, but the period stretches out to 12 seconds, bringing in some proper groundswell energy (371, moderate). The wind is a light cross-on from the NW again. It looks clean, but that long period at a beach break like Praia das Macas might make it a bit too straight-running. The afternoon turns messy again with a stronger cross-on breeze.
Now for the clear winner, the only standout in the whole 16-day window: the morning of Sunday the 13th of September. This is where it all clicks. The swell is a solid 7ft from the NNW, with a workable 8-second period and a big jump in energy up to 591 (moderate-to-strong). The wind? Glass. Absolutely clean, offshore conditions from the NW. This is your session. The water temp is around 69°, which is about average for this time of year, nothing wild. It’s an exposed beach, so expect a bit of a crowd, but for that morning, it’ll be worth it. Keep in mind that 7ft is pushing into expert territory, so if you’re not comfortable in that size, maybe sit it out.
After that, things drop off again. The 14th has some small, clean waves but nothing exciting, and the final few days just get chewed up by the wind.
So, hold out. The 13th of September early is your best bet. Don’t waste your energy on the rest.
- Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Thu morning, min 18°C on Tue morning). Winds decreasing (fresh winds from the N on Tue afternoon, light winds from the N by Wed night). | Days 4-6 Weather SummaryMostly dry. Warm (max 35°C on Sat morning, min 19°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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 | NNW 9 | NNW 9 | NNW 8 | NNW 7 | NNW 6 | NNW 7 | NNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | NW 9 | WNW 9 | WNW 9 | NW 12 | NW 11 | NNW 11 | NNW 10 | WNW 12 | WNW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 481 | 430 | 449 | 223 | 163 | 110 | 105 | 79 | 64 | 59 | 44 | 90 | 225 | 103 | 90 | 236 | 309 | 661 | 464 | 512 | 387 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross-on | cross-off | cross | cross-on | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:55PM2.75m | 6:17AM2.61m | 6:39PM2.56m | 7:04AM2.46m | 7:33PM2.34m | 8:06AM2.30m | 8:48PM2.14m | 9:30AM2.21m | 10:27PM2.08m | 11:05AM2.27m | 11:58PM2.19m | 12:23PM2.48m | 1:04AM2.39m | ||||||||
Low Tide | 11:40AM0.27m | 00:04AM0.31m | 12:22PM0.41m | 00:47AM0.49m | 1:14PM0.59m | 1:41AM0.70m | 2:23PM0.76m | 2:57AM0.88m | 4:00PM0.84m | 4:37AM0.91m | 5:40PM0.72m | 6:04AM0.77m | 6:52PM0.49m | ||||||||
 |  |  | | | | | |  | |  |  | | | | | | | | | | |
 | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — |
 | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:02 | — | — | 8:00 | — | — | 7:59 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 18 | 19 | 19 | 22 | 28 | 27 | 26 | 28 | 30 | 32 | 35 | 34 | 28 | 22 | 22 | 20 | 20 | 20 | 19 |
Feels °C | 15 | 15 | 14 | 17 | 17 | 21 | 25 | 24 | 22 | 27 | 26 | 27 | 34 | 32 | 29 | 22 | 21 | 19 | 19 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 14 | NW 8 | NW 8 | NW 8 | NNW 7 | WNW 8 | WNW 8 | NNW 6 | NNW 4 | WNW 9 | N 11 | WNW 9 | WNW 9 | NW 12 | NW 11 | WNW 9 | WNW 12 | WNW 12 | WNW 11 |
| kJ | 23 | 22 | 21 | 53 | 32 | 20 | 105 | 47 | 64 | 24 | 16 | 90 | 2 | 103 | 90 | 236 | 309 | 26 | 323 | 512 | 387 |
Swell 2 Height (m) Direction Period (s) | — | — | — | N 7 | SSW 16 | SSW 15 | NW 9 | SSW 14 | SSW 14 | WNW 8 | WNW 8 | NNW 5 | SW 12 | NNW 5 | NW 11 | WNW 9 | WNW 8 | WNW 15 | WNW 8 | — | — |
| kJ | — | — | — | 8 | 24 | 21 | 21 | 20 | 19 | 59 | 44 | 26 | 6 | 33 | 40 | 98 | 40 | 42 | 26 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | SSW 15 | — | NW 10 | SSW 14 | — | SSW 14 | SW 13 | WNW 10 | SW 13 | N 9 | SW 12 | NNW 14 | SW 12 | S 11 | S 11 | S 11 | — | — |
| kJ | — | — | — | 23 | — | 4 | 20 | — | 19 | 7 | 37 | 7 | 2 | 6 | 19 | 5 | 3 | 2 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | NW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 7 | NNW 6 | — | NNW 7 | NNW 6 | — | — | — | NW 9 | — | NNW 5 | NNW 5 | NNW 5 | NNW 11 | NNW 10 | NNW 6 | NNW 6 |
| kJ | 481 | 430 | 449 | 223 | 163 | 110 | — | 79 | 51 | — | — | — | 225 | — | 22 | 32 | 56 | 661 | 464 | 136 | 227 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 21 | 222 | 115 | 14 | 15 | 16 | 16 | 14 | 14 | 8 | 14 | 14 | 14 | 0 | 0 | 14 | 203 | 14 | 14 | 21 | 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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