Surf Forecasts:
Malhão surf forecast from 22 Aug 2026:
- Best quality surf: Saturday 29 Aug, 4AM (local time) - 6.5ft (2.0m), 11s period, NW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 7AM (local time) - 7ft (2.2m), 12s period, WNW swell with 1,332 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 7AM (local time) - 4ft (1.2m), 10s period with NW swell.
Best Forecast Surf Conditions for Malhão this week:
The surf forecast for Malhão over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 22) at 7AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.5m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Malhão in the next 16 days are 2.2m 12s and forecast to arrive on Sunday (Aug 23) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 10s period and expected on Saturday (Aug 22) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 22nd Aug) | 4ft (1.2m) 10s |
| Best Surf | 4AM (Sat 29th Aug) | 6.5ft (2.0m) 11s |
| Most Powerful | 7AM (Sun 23rd Aug) | 7ft (2.2m) 12s |
Table - best surf conditions forecast for Malhão over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what Malhão has got cookin' for us over the next couple of weeks.
Straight up, it's a bit of a slow burn. The first few days are a write-off for any decent paddle surfing. We’ve got some swell, but the wind is just a mess – onshore and cross-onshore junk. Saturday the 22nd and Sunday the 23rd are a no-go, with choppy, poor conditions. Monday the 24th and Tuesday the 25th are the same story, with onshore wind and short-period, wind-affected swell.
Things start to get interesting around Thursday the 27th. The morning looks promising with a clean, cross-offshore breeze from the NNW. We’ll see a 3ft NW swell (264 - moderate energy), and it’s the first real window of clean surf. Friday the 28th morning is also clean, but the swell is a bit smaller at 4ft.
The real standout, and the one I’d be circling on the calendar, is Saturday the 30th of August. The morning session is looking like the pick of the bunch. We’ve got a 6ft NW groundswell with a solid 10-second period, and a light, glassy offshore wind from the north. The water temp is about average for this time of year. The energy is a solid 557 (moderate), and it’s looking like very good surf conditions. This is the one to get excited about.
Following that, Sunday the 31st morning drops off to small 2ft clean waves, and Monday the 1st of September is similar. Then we get another promising window on Thursday the 3rd of September, with a 6ft NW swell (11 seconds) and clean conditions in the morning. That’s a bit of a wait, but it’s worth keeping an eye on.
Overall, keep your eyes on the 30th of August morning. That’s the best chance for some clean, fun waves at Malhão. The rest of the time, it’s mostly waiting for the wind to play nice.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sun afternoon. Warm (max 25°C on Sun morning, min 16°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the SSW by Sun afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Tue morning, min 19°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
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 9 | W 9 | WNW 15 | WNW 12 | WNW 11 | W 9 | WSW 8 | W 9 | W 8 | W 7 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | WNW 8 | NW 9 | NW 8 | NW 8 | NW 8 | NW 9 | NW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 42 | 38 | 461 | 1082 | 656 | 551 | 629 | 791 | 364 | 150 | 121 | 70 | 44 | 75 | 242 | 155 | 244 | 270 | 165 | 194 | 819 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | on | cross-on | on | on | on | on | cross-on | cross-on | on | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 11:10AM1.97m | 11:59PM1.89m | 12:24PM2.10m | 00:59AM2.03m | 1:15PM2.28m | 1:41AM2.20m | 1:55PM2.47m | 2:17AM2.36m | 2:29PM2.65m | 2:49AM2.51m | 3:01PM2.80m | 3:21AM2.63m | 3:33PM2.91m | 3:52AM2.71m | |||||||
Low Tide | 4:34AM1.13m | 5:43PM1.04m | 6:02AM1.05m | 6:50PM0.90m | 6:59AM0.88m | 7:35PM0.72m | 7:40AM0.70m | 8:11PM0.53m | 8:15AM0.53m | 8:43PM0.37m | 8:47AM0.37m | 9:14PM0.23m | 9:18AM0.25m | 9:45PM0.13m | |||||||
 | |  |  |  |  |  | | | | |  | | | | | | | | | | |
 | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | 8:19 | — | — | 8:17 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:12 | — | — | 8:10 | — |
mm | — | — | — | — | 3 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 19 | 25 | 24 | 21 | 23 | 23 | 21 | 23 | 23 | 20 | 22 | 23 | 20 | 21 | 21 | 20 | 23 | 23 | 20 |
Feels °C | 20 | 19 | 20 | 22 | 21 | 20 | 21 | 22 | 23 | 23 | 23 | 21 | 22 | 22 | 20 | 20 | 18 | 17 | 18 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | NW 10 | NNW 10 | WNW 15 | WNW 12 | WNW 11 | W 9 | N 8 | SW 13 | W 8 | W 7 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | WNW 8 | NW 9 | S 11 | NW 8 | NW 8 | — | NW 11 |
| kJ | 220 | 164 | 461 | 1082 | 656 | 551 | 1 | 6 | 364 | 150 | 121 | 70 | 44 | 75 | 242 | 155 | 2 | 270 | 165 | — | 819 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | W 9 | NNW 9 | NNW 9 | NNW 8 | N 8 | SW 13 | S 13 | SW 12 | SW 12 | SW 12 | W 10 | W 9 | SW 11 | SW 11 | WNW 8 | S 11 | NW 11 | NW 10 | — | — |
| kJ | 42 | 38 | 71 | 15 | 7 | 5 | 7 | 3 | 6 | 6 | 6 | 2 | 2 | 5 | 5 | 107 | 2 | 5 | 51 | — | — |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SSW 14 | W 8 | SW 13 | SW 13 | SW 13 | — | — | — | — | — | SW 12 | NW 10 | — | — | S 11 | — | S 11 | S 10 | — | — |
| kJ | 20 | 20 | 36 | 7 | 7 | 7 | — | — | — | — | — | 6 | 4 | — | — | 2 | — | 2 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | S 3 | SW 6 | SSW 5 | WSW 8 | W 9 | — | — | — | — | — | — | — | — | NW 8 | — | — | NW 9 | — |
| kJ | — | — | — | 5 | 112 | 37 | 629 | 791 | — | — | — | — | — | — | — | — | 244 | — | — | 194 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 55 | 533 | 1 | 1 | 183 | 1 | 462 | 145 | 1 | 1 | 412 | 82 | 1 | 412 | 78 | 0 | 280 | 93 | 109 | 93 | 109 |
Best forecast wave conditions in Portugal - Alentejo | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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Information about the Malhão Surf forecast
The above surf forecast table for Malhão provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Malhão can be found by selecting the local surf guide option on the grey menu. Our Malhão 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 (Malhão) 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 Malhão 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.
Malhão is 20 km (12 miles) from Sines. If you plan a holiday in Portugal - Alentejo, look for hotels and other accommodation in Sines. Sines has rooms for a wide range of budgets as well as car hire and transport links.
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