Surf Forecasts:
Praia das Macas surf forecast from 17 Jul 2026:
- Most powerful swell: Monday 20 Jul, 4PM (local time) - 4ft (1.2m), 7s period, NNW swell with 134 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 1.2m 7s and forecast to arrive on Monday (Jul 20) 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 13s period and expected on Friday (Jul 24) at 1AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Mon 20th Jul) | 4ft (1.2m) 7s |
Table - best surf conditions forecast for Praia das Macas over the next 16 days.
The Lowdown
G'day, Rusty here. Look, I've got to be straight with you – this is a tough outlook for Praia das Macas. We're looking at a full 16-day window, but honestly, there's nothing in the first two weeks that I'd even call a surf. It's a rough run.
The pattern starts off flat and stays that way for a long stretch. From Friday the 17th right through to Thursday the 30th of July, it's just a constant stream of "poor surf conditions." The swell is small and weak, with a combined energy that barely gets out of the double digits for the first week, hitting a moderate 158 on the 20th, but it's all junk. The wind is a relentless cross-onshore, blowing from the NNW and NW at 12 to 22 mph, making everything choppy and messy. There's a period of "fresh cross-onshore and lumpy" from the 25th onwards, which is just ugly. The water temperature is sitting at 67°F, which is about average for this time of year, so no surprises there.
The only real standout comes right at the very end of the forecast, on Friday the 31st of July. We get a proper pulse of swell – 12 ft from the NNW in the morning, dropping to 10 ft in the afternoon. The combined energy jumps to 1819 (strong to very strong wave energy), and the wind finally drops to 12 mph, still cross-on, but it's a "moderate cross-onshore." The wave comment even says "wind and tide favorable." But here's the kicker: at 12 ft, this is expert territory only. It's simply too big for beginners, and even for experienced surfers, it's a beast. The period is 9 seconds, so it's a wind swell, not a clean groundswell. For a beach break, that size with that wind will be a washing machine. Honestly, this setup looks more interesting for kite surfing than paddle surfing.
The following Saturday the 1st of August, it's back to strong cross-onshore winds and messy conditions with 10 ft to 8 ft sets. It's a no-go.
So, the bottom line? There's a huge gap of nearly two weeks with absolutely no recommendations. The only day with any potential is the 31st of July, and that's only for the brave and the expert. For everyone else, it's a write-off. Forecasts can change, but this one looks grim.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Fri morning, min 19°C on Fri morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Mon morning, min 18°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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 8 | NW 4 | NNW 4 | WNW 8 | NW 4 | NNW 5 | NNW 5 | NNW 6 | NW 5 | NNW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | N 8 | WNW 10 | NW 6 | WNW 9 | WNW 9 | NW 6 | NNW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 13 | 13 | 13 | 21 | 33 | 44 | 63 | 42 | 113 | 134 | 108 | 117 | 130 | 44 | 32 | 38 | 27 | 27 | 56 | 52 |
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 | 5:42PM3.08m | 6:11AM2.66m | 6:27PM2.92m | 6:56AM2.52m | 7:13PM2.70m | 7:42AM2.37m | 8:01PM2.46m | 8:33AM2.24m | 8:55PM2.23m | 9:31AM2.13m | 10:00PM2.06m | 10:39AM2.08m | 11:15PM1.99m | ||||||||
Low Tide | 11:23AM0.16m | 00:01AM0.08m | 12:07PM0.27m | 00:45AM0.24m | 12:52PM0.43m | 1:29AM0.44m | 1:40PM0.61m | 2:16AM0.64m | 2:34PM0.79m | 3:08AM0.82m | 3:40PM0.93m | 4:12AM0.95m | 4:57PM0.99m | ||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:30 | — | — |
 | — | — | 9:00 | — | — | 9:00 | — | — | 9:00 | — | 8:59 | — | — | 8:58 | — | — | 8:58 | — | — | 8:57 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 19 | 20 | 20 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 20 | 20 | 19 |
Feels °C | 18 | 18 | 17 | 19 | 18 | 17 | 18 | 18 | 19 | 18 | 18 | 19 | 19 | 19 | 20 | 20 | 18 | 18 | 19 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | W 9 | NW 9 | W 8 | WNW 12 | WNW 11 | NNW 8 | WNW 10 | N 8 | W 5 | WNW 10 | NNW 7 | NNW 6 | WNW 9 | WNW 9 |
| kJ | 22 | 13 | 13 | 13 | 13 | 6 | 11 | 14 | 20 | 12 | 14 | 24 | 117 | 35 | 44 | 21 | 31 | 15 | 14 | 16 | 15 |
Swell 2 Height (m) Direction Period (s) | SW 6 | SW 6 | SW 5 | SW 5 | SW 19 | NW 8 | W 9 | NNW 9 | W 8 | NW 8 | SW 16 | W 7 | WNW 10 | SW 14 | WNW 10 | N 7 | N 10 | WNW 9 | WNW 9 | SW 12 | S 13 |
| kJ | 1 | 1 | 1 | 1 | 15 | 3 | 7 | 8 | 12 | 11 | 10 | 10 | 37 | 8 | 33 | 24 | 8 | 27 | 27 | 6 | 3 |
Swell 3 Height (m) Direction Period (s) | N 6 | — | S 14 | S 13 | — | W 10 | NW 10 | SW 18 | W 13 | WNW 12 | S 10 | SW 16 | W 7 | SW 14 | SW 15 | WNW 10 | SW 13 | N 9 | S 13 | — | S 13 |
| kJ | 1 | — | 4 | 3 | — | 2 | 4 | 12 | 3 | 15 | 2 | 10 | 4 | 8 | 8 | 32 | 7 | 2 | 3 | — | 3 |
Wind waves Height (m) Direction Period (s) | WNW 5 | NW 4 | NNW 4 | NNW 4 | NW 4 | NNW 5 | NNW 5 | NNW 6 | NW 5 | NNW 7 | NNW 7 | NNW 7 | — | NNW 8 | WNW 5 | — | NW 6 | WNW 5 | WNW 5 | NW 6 | NNW 6 |
| kJ | 8 | 12 | 13 | 12 | 21 | 33 | 44 | 63 | 42 | 113 | 134 | 108 | — | 130 | 21 | — | 38 | 15 | 11 | 56 | 52 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 917 | 1357 | 887 | 526 | 968 | 216 | 290 | 379 | 192 | 178 | 425 | 178 | 106 | 507 | 16 | 16 | 489 | 16 | 20 | 489 | 58 |
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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