Surf Forecasts:
Praia das Macas surf forecast from 21 Aug 2026:
- Best quality surf: Sunday 23 Aug, 1AM (local time) - 3ft (0.9m), 14s period, WNW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 7AM (local time) - 6ft (1.8m), 12s period, WNW swell with 897 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 1AM (local time) - 3ft (0.9m), 14s 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 Sunday (Aug 23) at 1AM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 1.0m and 9s. 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 1.8m 12s and forecast to arrive on Sunday (Aug 23) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Monday (Aug 24) at 7AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 23rd Aug) | 3ft (0.9m) 14s |
| Best Surf | 1AM (Sun 23rd Aug) | 3ft (0.9m) 14s |
| Most Powerful | 7AM (Sun 23rd Aug) | 6ft (1.8m) 12s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
Alright, folks, let’s break down what’s cookin’ at Praia das Macas. The next couple weeks are a real mixed bag, and honestly, we’re staring at a lot of junk. The first few days are a total bust, so don’t even bother paddling out until the weekend.
The water temp is pretty much what you’d expect for this time of year, nothing wild.
The first week is a struggle. Friday the 21st and Saturday the 22nd are a complete washout with fresh cross-onshore winds and lumpy, useless surf. Save your energy. Sunday the 23rd is the first day that might get you wet, but it’s a marginal call. The morning has a clean cross-offshore wind from the SSE at 25 km/h, with a messy 1.8m swell from the W, 11-second period. The energy is moderate (846). The afternoon cleans up a bit wind-wise, but the swell is 1.9m from the W with a 10-second period, moderate energy (807). It’s not great, but it’s the only game in town early on.
Monday the 24th and Tuesday the 25th are back to poor, with strong winds and weak, short-period swell. The energy drops into the low hundreds. Wednesday the 26th through Friday the 28th see a little more swell, but it’s constantly cross-onshore and choppy, so no dice.
Your best bet in the whole run is Saturday the 29th of August. The morning session is the standout. The wind is a gentle cross-shore from the N at 15 km/h, and the swell is 1.8m from the NW with a 10-second period. The energy is moderate (685). It’s still a marginal call, but with that clean-ish wind, it’s the most surfable window. The afternoon turns cross-onshore, so get out there early.
After that, it’s a mess. Sunday the 30th through to the 5th of September is plagued by moderate to strong cross-onshore winds and choppy, poor surf. The swell sticks around 1.0m to 2.1m, but the wind just ruins it. There’s a brief moment on the 31st of August with a light onshore breeze, but it’s a tiny 1.1m swell, so don’t hold your breath.
For a beach break like Praia das Macas, the consistent NW/NNW swell is good news, but the wind is the enemy. With all the stronger winds and chop, this setup might actually be more interesting for kite surfing than paddle surfing for most of the period.
Bottom line: Sunday the 23rd morning is the first real chance, and Saturday the 29th morning is the pick of the bunch. Everything else is a gamble.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sun afternoon, min 18°C on Fri night). Winds decreasing (fresh winds from the N on Thu night, light winds from the S by Sat night). | Days 4-6 Weather SummaryHeavy rain (total 23mm), heaviest during Sun night. Warm (max 22°C on Mon morning, min 20°C on Sun night). Winds decreasing (strong winds from the S on Mon morning, light winds from the WSW by Mon night). | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | WNW 14 | W 11 | W 10 | WSW 9 | SW 8 | SW 8 | WSW 8 | W 7 | W 6 | W 6 | W 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | NW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 229 | 763 | 555 | 419 | 312 | 366 | 776 | 759 | 573 | 567 | 672 | 266 | 111 | 84 | 74 | 113 | 268 | 284 | 433 | 553 | 782 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | on | cross-on | on | cross-on |
High Tide | 9:44AM1.98m | 10:36PM1.85m | 11:16AM1.99m | 00:04AM1.90m | 12:30PM2.12m | 1:04AM2.05m | 1:21PM2.30m | 1:47AM2.21m | 2:01PM2.49m | 2:23AM2.38m | 2:35PM2.67m | 2:55AM2.53m | 3:07PM2.82m | 3:27AM2.65m | |||||||
Low Tide | 4:10PM1.09m | 4:41AM1.14m | 5:49PM1.05m | 6:08AM1.05m | 6:56PM0.90m | 7:05AM0.89m | 7:41PM0.72m | 7:46AM0.71m | 8:17PM0.54m | 8:21AM0.53m | 8:49PM0.37m | 8:53AM0.37m | 9:20PM0.23m | ||||||||
 | |  | | | |  | |  |  |  | | |  |  | | | | | | | |
 | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | 8:24 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:17 | — | — | 8:15 | — |
mm | — | — | — | — | — | — | — | — | 14 | 6 | 2 | — | — | — | 1 | — | — | 1 | — | — | — |
Temp °C | 19 | 19 | 18 | 19 | 20 | 20 | 20 | 21 | 21 | 22 | 22 | 21 | 21 | 22 | 21 | 21 | 21 | 20 | 20 | 20 | 20 |
Feels °C | 15 | 14 | 14 | 19 | 19 | 20 | 18 | 18 | 20 | 17 | 18 | 21 | 22 | 21 | 21 | 20 | 19 | 18 | 17 | 17 | 18 |
Swell 1 Height (m) Direction Period (s) | NW 11 | SSW 15 | WNW 9 | NNW 10 | NNW 9 | NNW 9 | W 11 | W 10 | NNW 8 | NNW 8 | NNW 8 | WSW 8 | W 7 | W 6 | W 6 | W 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | NW 10 |
| kJ | 229 | 21 | 45 | 419 | 312 | 151 | 776 | 759 | 19 | 11 | 11 | 266 | 111 | 84 | 74 | 113 | 268 | 284 | 433 | 553 | 782 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 11 | SSW 14 | W 9 | W 9 | WNW 14 | NNW 8 | N 8 | SSW 13 | SW 13 | SW 13 | S 6 | SSW 6 | N 6 | SW 12 | SW 12 | NW 13 | NNW 12 | SW 11 | SW 11 | SW 11 |
| kJ | 26 | 12 | 18 | 39 | 39 | 366 | 70 | 48 | 17 | 7 | 6 | 36 | 27 | 1 | 6 | 5 | 7 | 14 | 5 | 5 | 4 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | — | NNW 12 | SSW 14 | SSW 14 | WNW 8 | SSW 13 | SSW 13 | SSW 13 | — | — | NNW 8 | N 7 | SW 12 | W 10 | NW 15 | SW 11 | SW 11 | — | — | — |
| kJ | 21 | — | 14 | 20 | 20 | 23 | 18 | 17 | 17 | — | — | 11 | 4 | 6 | 2 | 8 | 5 | 5 | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 7 | NNW 10 | NNW 10 | — | — | — | SSE 3 | — | WSW 9 | SW 8 | SW 8 | — | — | SSW 5 | SSW 4 | — | — | — | — | WNW 9 | — |
| kJ | 215 | 763 | 555 | — | — | — | 5 | — | 573 | 567 | 672 | — | — | 11 | 4 | — | — | — | — | 311 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 21 | 420 | 15 | 15 | 62 | 0 | 9 | 393 | 39 | 247 | 427 | 127 | 1 | 62 | 127 | 62 | 203 | 21 | 21 | 205 | 21 |
Best forecast wave conditions in Lisboa | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Praia das Macas surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest