Surf Forecasts:
Adraga surf forecast from 29 Aug 2026:
- Most powerful swell: Monday 31 Aug, 10PM (local time) - 6.5ft (2.0m), 10s period, NNW swell with 772 kJ wave energy.
Best Forecast Surf Conditions for Adraga this week:
The most powerful waves expected at Adraga in the next 16 days are 2.0m 10s and forecast to arrive on Monday (Aug 31) at 10PM. 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 10s period and expected on Monday (Aug 31) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Mon 31st Aug) | 6.5ft (2.0m) 10s |
Table - best surf conditions forecast for Adraga over the next 16 days.
The Lowdown
Alright, let's get into it. This is looking like a rough stretch for the ol' lineup, I gotta be honest with ya. We're looking at a solid 16 days where the surf is basically a no-go for most of it. There’s a big gap of poor conditions right from the start, and it’s not until the very end, over a week away, that we finally see a tiny glimmer of hope.
Right off the bat, from day one, it's a write-off. A north wind is howling, cross-onshore and choppy, just smashing up any swell that tries to roll in. And it stays that way. Day after day, we’ve got a stiff northerly breeze ruining what could be a half-decent pulse of swell. The wave energy is moderate, hitting numbers like 471 (on the 29th of August), but the quality is just poor—choppy, lumpy, and messy. This pattern locks in for days on end.
The middle of the second week isn't much better. On the 4th and 5th of September, the wind swings a little but it’s still onshore or cross-onshore. The swell period jumps up, hitting 14 seconds on the 4th, hinting at some groundswell, but the wind just won’t let it clean up. The water temp has been around 68°F, which is about normal for this time of year, not that it helps with this onshore slop.
Finally, lookin’ way down the line, on the 11th of September, there is a moment that gets my attention. Friday morning shows a 4ft swell from the WNW with a very long 15 second period. The combined energy is a solid 823 (strong). The wind is light, from the NNW, which is offshore for Adraga. That’s the cleanest window we see in the whole forecast, but the report calls it marginal due to tide conditions, so you’d have to really be on it. The swell is long-period groundswell, so those sets will be clean and powerful if the wind holds.
There’s one more flicker. On the 13th of September, Sunday morning, look at this: a glassy flat calm forecast. 2ft of swell from the NW with a 15 second period, and glassy wind from the north at 3 mph. It’s tiny, but if you’ve got a log and want the lineup to yourself, that is the only morning that is going to be truly clean.
But honestly, for nearly the entire 16 days, Adraga is just one long story of onshore wind blowing out whatever swell arrives. The overall setup is poor for paddle surfing; honestly, with the strong wind and consistent swell energy, the break looks way more interesting for a kite session than anything with a paddle. There is only one standout worth chasing: the morning of the 13th of September for the absolute clean, glassy conditions, even if the swell is small. The other long-range window on the 11th of September has the size and period, but it’s a risk.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Sun morning, min 17°C on Mon night). Winds increasing (light winds from the NNW on Sat night, fresh winds from the N by Mon night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Tue afternoon, min 18°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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 9 | NW 9 | NW 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 10 | NNW 10 | NW 9 | NNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NW 14 | NW 12 | NW 11 |
Wave Graph | |||||||||||||||||||||
471 | 300 | 211 | 191 | 423 | 230 | 179 | 315 | 756 | 516 | 523 | 315 | 392 | 302 | 214 | 183 | 178 | 153 | 221 | 428 | 347 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | 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 | 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 | 8:06AM2.30m | 8:48PM2.14m | ||||||||
Low Tide | 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 | 2:23PM0.76m | 2:57AM0.88m | ||||||||
7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | |
— | 8:13 | — | — | 8:12 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 19 | 20 | 20 | 18 | 19 | 19 | 18 | 18 | 19 | 18 | 19 | 19 | 18 | 19 | 19 | 18 | 20 | 20 | 19 |
Feels °C | 18 | 16 | 17 | 18 | 17 | 14 | 14 | 14 | 13 | 13 | 14 | 13 | 17 | 16 | 15 | 18 | 16 | 14 | 19 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | NW 9 | S 10 | NW 8 | NW 8 | W 13 | NW 9 | NW 9 | NW 10 | SW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 16 | SSW 15 | NNW 7 | SSW 14 | WNW 8 | NNW 7 | NW 12 | NW 11 |
471 | 2 | 211 | 191 | 3 | 230 | 179 | 315 | 10 | 23 | 21 | 21 | 23 | 24 | 21 | 183 | 20 | 28 | 121 | 428 | 347 | |
Swell 2 Height (m) Direction Period (s) | S 10 | — | — | W 13 | — | — | W 11 | SW 16 | — | — | — | — | SSW 15 | — | SSW 15 | SSW 14 | SSW 14 | SSW 14 | NW 14 | NW 8 | SW 13 |
2 | — | — | 4 | — | — | 21 | 11 | — | — | — | — | 23 | — | 21 | 20 | 20 | 19 | 221 | 17 | 7 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 18 | S 11 | — | — | — | — | — | — | — | SSW 14 | — | NW 16 | WNW 8 | SW 13 | — |
— | — | — | — | — | — | 12 | 2 | — | — | — | — | — | — | — | 20 | — | 11 | 35 | 7 | — | |
Wind waves Height (m) Direction Period (s) | — | NW 9 | — | NNW 3 | NW 9 | NNW 5 | NNW 5 | NNW 6 | NNW 10 | NW 9 | NNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | — | NNW 7 | NNW 7 | — | NNW 7 | NNW 7 |
— | 300 | — | 3 | 423 | 74 | 91 | 110 | 756 | 516 | 523 | 315 | 392 | 302 | 214 | — | 178 | 153 | — | 124 | 128 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 504 | 13 | 13 | 421 | 20 | 221 | 440 | 221 | 221 | 221 | 115 | 21 | 516 | 29 | 19 | 450 | 15 | 13 | 421 | 13 |
Best forecast wave conditions in Lisboa | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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Information about the Adraga Surf forecast
The above surf forecast table for Adraga provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Adraga can be found by selecting the local surf guide option on the grey menu. Our Adraga 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 (Adraga) 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 Adraga 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.
Adraga 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.











