
Surf Forecasts:
Praia das Macas surf forecast from 6 Aug 2026:
- Most powerful swell: Thursday 6 Aug, 4PM (local time) - 4.5ft (1.3m), 8s period, NNW swell with 221 kJ wave energy.
Best Forecast Surf Conditions for Praia das Macas this week:
The most powerful waves expected at Praia das Macas in the next 16 days are 1.3m 8s and forecast to arrive on Thursday (Aug 06) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 12s period and expected on Thursday (Aug 06) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Thu 6th Aug) | 4.5ft (1.3m) 8s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright, grab your board and let’s get into it. It’s a bit of a rough stretch of days ahead on the surf front. There’s swell moving through, but the wind just won’t give us a break. The whole 16-day window here looks pretty darn bleak for any proper waves. We’re looking at a long run with nothing worth paddling out for, a solid stretch of flat, messy conditions. It’s one of those times where you're better off checking the tide pools than the lineup.
The issue is every day sees cross-onshore winds, messing up what little swell there is. We'll start with this. On the morning of Thursday, August 6th, there’s a bit of energy in the water with a swell of 4ft from the NNW, but it’s an 8-second wind swell. With that 25 km/h cross-onshore wind, it’s just choppy and poor. The combined energy is weak, only rating at 228. The same goes for the afternoon, more wind, and slightly bigger, but still, it’s all over the place.
We will go through the entire period, and honestly, day after day, we see the same story. The 7th through the morning of the 8th have knee-high dribble, weak energy, and more cross-onshore junky surf. There’s a slight drop in wind on the morning of the 8th to a gentle breeze, but the swell drops too. It’s not going to do anything.
From the 9th through the 11th, there might be small pulses but they’re short-period, weak, and surf quality remains poor. The energy does pick up a bit on the 12th with some WNW swell, but it’s still cross-onshore and hopeless. By the 14th and 15th, we see a slightly bigger pulse, but it’s all short-period and blown out. On the 15th, we’ve got 5ft-5ft of slop with strong winds, not what you’d call surfable.
Then on the 17th, the wind picks up to a strong breeze, and it is messy. The following day, August 18th, brings the biggest swell of the window, around 8ft, and the energy reading is a substantial 930. But, here's the kicker: the wind is 45 km/h cross-onshore. It's a complete washing machine. This is not a surf day. In fact, this kind of setup, with big onshore swell and strong wind, looks way better for kite surfing than paddle surfing. It’s just blown out chaos.
There’s a tiny sliver of hope on the morning of August 21st. The wind actually goes cross-shore, not onshore, with a gentle breeze. But the swell is tiny – about 3ft – and short-period. The combined energy is a mere 71. It's about as weak as it gets. The afternoon might see the wind go offshore, but the swell has died completely. It's a washout.
So there you have it. For the next two weeks, there’s nothing here. This is a tough spell. But, this is a consistent break, so it usually doesn’t stay this bad for long. Forecasts can change, so keep an eye out, but I wouldn't hold my breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sat morning, min 19°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sun morning, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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) | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 8 | NNW 8 | WNW 8 | W 7 | NW 11 | WNW 7 | NW 10 | NW 8 | NW 8 | NNW 7 | NNW 5 | NW 5 | WNW 10 | WNW 9 | WNW 9 | W 9 |
Wave Graph | |||||||||||||||||||||
164 | 221 | 216 | 184 | 199 | 127 | 67 | 51 | 35 | 42 | 76 | 74 | 109 | 113 | 34 | 44 | 51 | 100 | 132 | 135 | 162 | |
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-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:01PM2.26m | 9:44AM2.23m | 10:26PM2.18m | 11:09AM2.28m | 11:54PM2.25m | 12:27PM2.45m | 1:06AM2.41m | 1:29PM2.69m | 2:04AM2.59m | 2:22PM2.93m | 2:53AM2.75m | 3:10PM3.11m | 3:38AM2.85m | ||||||||
Low Tide | 2:39PM0.75m | 3:17AM0.76m | 4:02PM0.80m | 4:41AM0.80m | 5:34PM0.73m | 6:05AM0.72m | 6:51PM0.53m | 7:12AM0.54m | 7:52PM0.30m | 8:07AM0.35m | 8:43PM0.09m | 8:54AM0.18m | 9:29PM-0.05m | ||||||||
6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | |
— | 8:44 | — | — | 8:43 | — | — | 8:40 | — | — | 8:39 | — | — | 8:38 | — | — | 8:37 | — | — | 8:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 21 | 21 | 20 | 22 | 22 | 21 | 21 | 21 | 20 | 21 | 21 | 20 | 20 | 21 | 20 | 21 | 21 | 20 |
Feels °C | 17 | 18 | 17 | 19 | 19 | 19 | 21 | 22 | 21 | 22 | 20 | 19 | 21 | 20 | 19 | 19 | 19 | 18 | 18 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | NNW 8 | N 8 | W 7 | W 7 | NW 10 | NW 10 | NW 8 | W 6 | NNW 7 | WNW 10 | WNW 11 | WNW 10 | WNW 9 | WNW 9 | W 9 |
49 | 70 | 46 | 43 | 42 | 40 | 67 | 31 | 35 | 34 | 50 | 74 | 109 | 20 | 34 | 19 | 40 | 100 | 132 | 135 | 162 | |
Swell 2 Height (m) Direction Period (s) | WNW 7 | S 12 | SW 13 | S 12 | S 12 | S 12 | WNW 9 | S 11 | NW 12 | NW 11 | S 11 | S 11 | W 7 | W 11 | W 6 | NNW 9 | NW 12 | NNW 10 | NNW 10 | — | NNW 10 |
9 | 3 | 7 | 3 | 3 | 3 | 26 | 3 | 6 | 42 | 2 | 2 | 21 | 9 | 7 | 8 | 22 | 41 | 35 | — | 33 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | — | — | S 12 | — | — | S 12 | — | NW 10 | N 7 | — | — | S 12 | S 12 | WNW 10 | NNW 12 | W 6 | — | NW 7 | — | — |
6 | — | — | 3 | — | — | 3 | — | 4 | 4 | — | — | 3 | 3 | 11 | 15 | 1 | — | 2 | — | — | |
Wind waves Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 8 | NW 8 | WNW 8 | NNW 7 | — | WNW 7 | WNW 7 | WNW 6 | NW 8 | NW 4 | NNW 5 | NW 5 | NNW 5 | NNW 5 | NNW 4 | NNW 5 |
164 | 221 | 216 | 184 | 199 | 127 | 15 | 51 | 20 | — | 76 | 51 | 30 | 113 | 29 | 44 | 51 | 35 | 19 | 42 | 35 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 568 | 285 | 160 | 968 | 20 | 20 | 506 | 20 | 20 | 766 | 14 | 14 | 569 | 14 | 109 | 449 | 14 | 14 | 573 | 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.











