Surf Forecasts:
Praia das Macas surf forecast from 28 Aug 2026:
- Best quality surf: Thursday 3 Sep, 7AM (local time) - 4.5ft (1.4m), 7s period, NNW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 7PM (local time) - 7ft (2.2m), 11s period, WNW swell with 1,062 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 7AM (local time) - 4.5ft (1.4m), 7s 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 03) at 7AM. The primary swell is predicted to be 1.4m and 7s period. 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 2.2m 11s and forecast to arrive on Friday (Aug 28) at 7PM. 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+) | 7AM (Thu 3rd Sep) | 4.5ft (1.4m) 7s |
| Best Surf | 7AM (Thu 3rd Sep) | 4.5ft (1.4m) 7s |
| Most Powerful | 7PM (Fri 28th Aug) | 7ft (2.2m) 11s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
G’day, Rusty here, and we’re lookin’ at a real mixed bag for Praia das Macas over the next couple weeks. The best action is right at the start, but then we hit a long rough patch before things might try to turn around. The water temperature is sittin’ at 68°, which is about average for this time of year – nothin’ unusual there.
Let’s kick off with the standout. Friday morning, the 28th of August, is the real go. The swell is a solid 8ft from the WNW with an 11-second period, which is proper groundswell and packs moderate to strong energy (1277). The wind is glassy, offshore out of the NW, so it’s gonna be clean, lined-up walls. This is excellent surf, but at 8ft it’s gettin’ into expert territory – not one for beginners. The only downside? The break here can get crowded sometimes, but on a glassy morning like that, it’s worth the company. The swell direction is from the WNW, and with the optimum here bein’ NW, that’s a near-perfect match for solid, powerful waves.
After that morning, things go downhill fast. Friday afternoon the wind swings cross-on and it gets messy. From Saturday the 29th right through to most of the second week, the wind is just onshore or cross-onshore, blowin’ strong at times, and the swell drops off. The surf is poor, choppy, and not worth paddlin’ out for. There’s a gap of several days with no real recommendations.
Around Thursday the 3rd of September morning, we get a small glimpse – 5ft from the NNW with a short 7-second period and glassy conditions out of the ESE. It’s surfable but very ordinary – weak energy (221) and short period means weak, crumbly waves.
Later on, Thursday the 10th of September morning, another pulse shows up: 8ft from the NNW but with a short 8-second period and marginal conditions. The wind is light cross-on and the wave comment says “marginal” – the energy is moderate (623), but the short period and wind combo mean it ain’t gonna be the glassy gem we had on the 28th. Keep an eye on it, but it’s not a standout.
Honestly, for this stretch, Friday morning the 28th is the only real highlight. After that, it’s a lot of waitin’. If you’re keen on kitesurfing, when the swell is 5ft to 7ft with strong cross-onshore winds, the setup at Praia das Macas looks more interesting for that than paddle surf.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sun morning, min 18°C on Fri night). Winds increasing (calm on Fri morning, fresh winds from the N by Sun night). | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Wed night, min 18°C on Mon night). Winds decreasing (strong winds from the N on Tue night, light winds from the NNE by Wed night). | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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 11 | WNW 11 | NW 10 | NW 9 | NW 9 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | NNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1277 | 1080 | 817 | 471 | 300 | 187 | 187 | 327 | 260 | 176 | 315 | 341 | 235 | 601 | 425 | 432 | 319 | 249 | 220 | 143 | 104 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | 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 | cross | cross-on | cross | glassy | on | cross |
High Tide | 3:38PM2.93m | 3:58AM2.73m | 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 | ||||||||
Low Tide | 9:51PM0.13m | 9:56AM0.18m | 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 | ||||||||
 | |  | | |  | | | | |  | | | | | | | | | | | |
 | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — |
 | — | 8:15 | — | — | 8:13 | — | — | 8:12 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 19 | 19 | 19 | 20 | 21 | 21 | 19 | 19 | 19 | 18 | 18 | 19 | 18 | 20 | 20 | 25 | 27 | 24 | 26 |
Feels °C | 20 | 18 | 17 | 17 | 17 | 19 | 19 | 19 | 17 | 16 | 15 | 13 | 14 | 13 | 12 | 17 | 16 | 23 | 25 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WNW 11 | NW 10 | NW 9 | S 10 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | SSW 15 | SSW 14 | NNW 8 | SSW 16 | SSW 15 | NNW 7 | NNW 7 | NNW 7 |
| kJ | 1277 | 1080 | 817 | 471 | 2 | 187 | 187 | 327 | 260 | 176 | 315 | 341 | 235 | 21 | 21 | 432 | 24 | 21 | 220 | 143 | 104 |
Swell 2 Height (m) Direction Period (s) | S 11 | — | S 10 | S 10 | — | — | W 13 | — | — | W 11 | SW 16 | SW 16 | SSW 15 | — | — | SSW 15 | — | SSW 15 | SSW 14 | SSW 14 | WNW 8 |
| kJ | 2 | — | 2 | 2 | — | — | 3 | — | — | 21 | 11 | 10 | 23 | — | — | 23 | — | 21 | 20 | 20 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 18 | S 11 | S 10 | — | — | — | — | — | — | W 7 | W 7 | SSW 14 |
| kJ | — | — | — | — | — | — | — | — | — | 12 | 2 | 2 | — | — | — | — | — | — | 1 | 1 | 19 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NW 9 | NNW 3 | — | NNW 3 | N 4 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 9 | NNW 7 | — | NNW 8 | NNW 7 | — | — | — |
| kJ | — | — | — | — | 300 | 2 | — | 7 | 9 | 39 | 55 | 104 | 106 | 601 | 425 | — | 319 | 249 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 250 | 14 | 14 | 420 | 14 | 14 | 420 | 14 | 21 | 420 | 222 | 285 | 449 | 212 | 22 | 206 | 16 | 0 | 172 | 15 |
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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