
Surf Forecasts:
Foz do Lizandro surf forecast from 16 Sep 2026:
- Best quality surf: Monday 21 Sep, 10AM (local time) - 4ft (1.2m), 10s period, NW swell with offshore winds.
- Most powerful swell: Monday 21 Sep, 4PM (local time) - 4.5ft (1.4m), 12s period, NW swell with 580 kJ wave energy.
- Next surfable swell (1★+): Monday 21 Sep, 10AM (local time) - 4ft (1.2m), 10s period with NW swell.
Best Forecast Surf Conditions for Foz do Lizandro this week:
The surf forecast for Foz do Lizandro over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 21) at 10AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.9m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Foz do Lizandro in the next 16 days are 1.4m 12s and forecast to arrive on Monday (Sep 21) 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 3.5m 9s period and expected on Wednesday (Sep 16) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Mon 21st Sep) | 4ft (1.2m) 10s |
| Best Surf | 10AM (Mon 21st Sep) | 4ft (1.2m) 10s |
| Most Powerful | 4PM (Mon 21st Sep) | 4.5ft (1.4m) 12s |
Table - best surf conditions forecast for Foz do Lizandro over the next 16 days.
The Lowdown
Alright, let's get into it. It's Rusty here, and I've had a good look at the coming swell window for Foz do Lizandro. We've got a bit of a slow start to work through, so bear with me.
The first week or so is mostly a write-off, I'm not gonna sugarcoat it. From now through the middle of next week, the wind is just a nightmare—howling out of the north-northwest, making a proper mess of things. You'll see some small bumps on the charts on the 17th, with a 4ft northwest swell and clean-ish conditions in the morning thanks to a light cross-offshore breeze, but it's marginal at best.
Honestly, the most interesting stuff doesn't really kick off until Monday the 21st of September. That's when we finally see some life. The morning looks like the real standout for the whole stretch. We've got a building 4ft swell from the northwest with moderate wave energy (539), and the wind is light and offshore from the east. That's going to produce some very clean, surfable lines. The setup is a river mouth, and the swell is a long-period 10-second groundswell—that length is going to give those waves some shape and push. The afternoon blows out with a northwest cross-onshore, so you've got to get it in the morning.
The real gold, the one that gets me a bit excited, is Wednesday the 23rd. This is the best on offer. Early morning, the wind is dead calm—glassy—and we've got a solid 5ft northwest groundswell with a very long 14-second period. The energy jumps to 896 (very strong). This is a serious pulse of energy, and at a river mouth like Foz do Lizandro, that long period will wrap in nicely. The water temperature is sitting at 66°, which is a bit colder than normal for this time of year, so maybe pack your hood. This swell is getting up there in size, into the bracket where it's going to be a bit much for beginners. For the rest of us, it's a morning mission. The afternoon gets a bit lumpy with a light cross-onshore, but the morning session should be absolutely firing.
After that, things settle back down. Saturday the 27th has a glassy morning with a clean 3ft northwest groundswell (very long 15-second period) for a chance at some smaller, longer lines. Then the very last standout is Monday the 28th, another glassy morning with 5ft of northwest swell (750 energy). That's another solid, clean day for experienced surfers to close out the month, but again, only in the morning before the onshore kicks in.
So, to sum it up: Foz do Lizandro has a slow, windy start. Don't bother this week. The window opens on the morning of the 21st, but the absolute pick of the bunch is the glassy Wednesday morning, the 23rd of September, with a strong, long-period groundswell. You want that. Everything else is a dawn patrol flicker at best. Keep an eye on the sky, because that glassy wind won't wait.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Thu morning, min 17°C on Tue night). Winds decreasing (strong winds from the N on Tue night, moderate winds from the NNE by Wed night). | Days 5-7 Weather SummaryMostly dry. Warm (max 30°C on Mon morning, min 18°C on Fri night). Winds decreasing (fresh winds from the NNW on Fri afternoon, calm by Mon morning). | |||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 5 | WNW 10 | S 13 | SW 13 | S 12 | NW 11 | S 16 | SW 16 | NW 15 | SW 14 | SW 14 | SW 14 | SW 13 | S 13 | S 13 | S 13 | S 12 | NW 10 | NW 12 | NW 11 |
Wave Graph | ||||||||||||||||||||
64 | 73 | 3 | 6 | 3 | 338 | 5 | 10 | 36 | 8 | 8 | 8 | 7 | 3 | 3 | 3 | 3 | 292 | 580 | 403 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross-off | cross-on | cross | cross-off | cross-on | off | off | cross-on | cross-off |
High Tide | 6:02PM2.62m | 6:18AM2.55m | 6:39PM2.37m | 6:56AM2.36m | 7:22PM2.13m | 7:44AM2.16m | 8:22PM1.92m | 8:58AM2.00m | 10:00PM1.81m | 10:42AM1.99m | 11:40PM1.88m | 12:03PM2.12m | 00:41AM2.05m | |||||||
Low Tide | 00:04AM0.50m | 12:25PM0.57m | 00:38AM0.73m | 1:07PM0.80m | 1:19AM0.95m | 2:02PM1.01m | 2:18AM1.13m | 3:32PM1.14m | 4:00AM1.22m | 5:23PM1.11m | 5:40AM1.12m | 6:33PM0.94m | ||||||||
— | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | |
7:46 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 18 | 18 | 19 | 19 | 21 | 20 | 18 | 21 | 21 | 20 | 26 | 23 | 24 | 28 | 27 | 28 | 30 | 29 | 26 |
Feels °C | 15 | 13 | 11 | 12 | 13 | 16 | 14 | 13 | 17 | 17 | 18 | 24 | 21 | 22 | 27 | 25 | 25 | 28 | 25 | 22 |
Swell 1 Height (m) Direction Period (s) | NW 11 | WNW 10 | S 13 | SW 13 | S 12 | NNW 9 | S 12 | SW 16 | NW 15 | NNW 13 | NNW 15 | NNW 14 | NNW 13 | NNW 13 | NNW 12 | NNW 11 | NW 11 | NW 10 | NW 12 | NW 11 |
33 | 73 | 3 | 6 | 3 | 948 | 3 | 10 | 36 | 304 | 3030 | 2378 | 1543 | 1049 | 835 | 739 | 458 | 292 | 580 | 403 | |
Swell 2 Height (m) Direction Period (s) | WNW 8 | S 13 | — | — | — | NW 11 | S 16 | S 11 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | S 13 | S 13 | S 11 | S 12 | NW 13 | S 11 | S 12 |
13 | 3 | — | — | — | 338 | 5 | 3 | 9 | 8 | 8 | 8 | 7 | 3 | 3 | 3 | 3 | 245 | 2 | 3 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | S 18 | — | — | — | S 11 | — | SW 14 | — | — | — | S 13 | — | S 11 | S 12 | S 12 |
— | — | — | — | — | 6 | — | — | — | 2 | — | 8 | — | — | — | 3 | — | 2 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 7 | NNW 9 | NNW 9 | NNW 10 | — | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | — | — | — | — | — | — | — | — | NW 3 |
64 | 413 | 1586 | 1494 | 2179 | — | 1048 | 1159 | 885 | 475 | 500 | — | — | — | — | — | — | — | — | 3 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 424 | 232 | 588 | 333 | 125 | 30 | 232 | 125 | 28 | 217 | 27 | 0 | 208 | 19 | 0 | 27 | 0 | 0 | 27 | 27 |
Best forecast wave conditions in Ericeira | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
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Information about the Foz do Lizandro Surf forecast
The above surf forecast table for Foz do Lizandro provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Foz do Lizandro can be found by selecting the local surf guide option on the grey menu. Our Foz do Lizandro 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 (Foz do Lizandro) 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 Foz do Lizandro 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.
Foz do Lizandro is 16 km (10 miles) from the city of Sintra. If you plan a holiday in Ericeira, 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.










