Surf Forecasts:
Coxos surf forecast from 28 Aug 2026:
- Most powerful swell: Saturday 29 Aug, 1AM (local time) - 7ft (2.1m), 10s period, NW swell with 809 kJ wave energy.
Best Forecast Surf Conditions for Coxos this week:
The most powerful waves expected at Coxos in the next 16 days are 2.1m 10s and forecast to arrive on Saturday (Aug 29) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 15s period and expected on Tuesday (Sep 01) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Sat 29th Aug) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s cut through the noise and talk about what’s actually happening with the surf. We’re looking at a pretty tough stretch for Coxos over the next 16 days. The water temp is sitting at 68°F, which is 1°F cooler than average for this time of year, so pretty much what you’d expect.
The first decent opportunity doesn’t show up until Friday afternoon, August 28th. We’ve got a 7ft swell rolling in from the WNW with a period of 11 seconds, giving a solid 1134 combined energy. That’s moderate wave energy, but the wind is blowing onshore from the NW at 12 mph. The forecast is calling it marginal, and honestly, that onshore breeze is going to mess with the shape. It’s not a standout, but it’s the first wave we’ve got.
After that, the conditions just go flat. From Saturday, August 29th, right through to Saturday, September 5th, it’s a real dead zone. We’re talking consistent cross-onshore winds, lumpy and choppy conditions, and scores that are basically zero. There’s a brief glimmer on Sunday morning, September 6th, when a 4ft swell from the NNW with a very long 11-second period shows up. The combined energy jumps to 559, but it’s still a marginal call with light cross-onshore winds. It’s something to keep an eye on, but nothing to get excited about.
The one true standout in this whole outlook is the window around Thursday, September 10th. On Thursday morning, we’re looking at a 8ft swell from the NNW with an 8-second period. The combined energy is a massive 1819, which is strong wave energy. The wind is a light breeze from the north at 6 mph, but it’s cross-on, so it’s not perfect. The real gem is Thursday afternoon: a 7ft swell from the NNW, but the period stretches out to a very long 12 seconds. That’s groundswell territory, and the combined energy is still pumping at 1423. The wind is light and onshore from the NW, which could clean it up a bit. This is a solid swell at a reef break, and with that long period, it should hold up well. Keep in mind, with the swell over 5ft, it’s getting a bit too big for beginners, and the crowds at Coxos are often there, so expect some company.
The following days drop off again. By Saturday, September 12th, we’re back to small, weak swell with onshore winds.
So, the bottom line: the first week is a washout. The best bet is Thursday, September 10th, with that solid, long-period groundswell. It’s a promising day, but it’s a week and a half out, so don’t book the time off just yet. Conditions can turn.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sun morning, min 17°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu morning, min 17°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Fri 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | ||||||||||||||
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 11 | NW 10 | NW 9 | NW 8 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | NNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 |
Wave Graph | ||||||||||||||||||||
1134 | 809 | 437 | 286 | 211 | 244 | 361 | 257 | 179 | 348 | 299 | 208 | 547 | 355 | 463 | 383 | 373 | 288 | 220 | 105 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | 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 | on | cross-on |
High Tide | 4:05AM2.78m | 4:17PM3.03m | 4:37AM2.82m | 4:50PM3.02m | 5:10AM2.82m | 5:24PM2.94m | 5:46AM2.76m | 6:02PM2.80m | 6:25AM2.66m | 6:46PM2.61m | 7:12AM2.51m | 7:40PM2.39m | ||||||||
Low Tide | 9:59PM0.14m | 10:04AM0.19m | 10:29PM0.09m | 10:37AM0.16m | 11:01PM0.10m | 11:11AM0.19m | 11:35PM0.18m | 11:48AM0.28m | 00:12AM0.31m | 12:31PM0.42m | 00:55AM0.50m | 1:22PM0.60m | 1:49AM0.71m | |||||||
— | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | |
8:15 | — | — | 8:13 | — | — | 8:12 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 20 | 20 | 20 | 21 | 21 | 18 | 20 | 20 | 18 | 19 | 20 | 18 | 21 | 21 | 18 | 25 | 24 | 20 |
Feels °C | 18 | 18 | 19 | 18 | 21 | 19 | 18 | 15 | 17 | 17 | 14 | 15 | 15 | 13 | 18 | 17 | 15 | 24 | 22 | 19 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | NW 10 | NW 9 | NW 8 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | SSW 15 | SSW 14 | SSW 15 | SSW 16 | SSW 15 | NNW 8 | NNW 7 | NNW 7 |
1134 | 809 | 437 | 286 | 211 | 244 | 361 | 257 | 179 | 348 | 299 | 208 | 22 | 21 | 23 | 24 | 22 | 288 | 220 | 105 | |
Swell 2 Height (m) Direction Period (s) | — | — | S 10 | S 10 | — | W 13 | — | W 12 | NW 11 | SW 17 | SW 16 | SSW 15 | — | — | — | — | — | SSW 14 | SSW 14 | WNW 8 |
— | — | 2 | 2 | — | 4 | — | 11 | 33 | 11 | 10 | 23 | — | — | — | — | — | 20 | 20 | 13 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 11 | S 11 | S 10 | — | — | — | — | — | — | — | — | SW 14 |
— | — | — | — | — | — | — | — | 9 | 2 | 2 | — | — | — | — | — | — | — | — | 8 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | N 4 | N 5 | NNW 4 | NNW 5 | NNW 5 | NNW 6 | NNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | — | — | — |
— | — | — | — | — | — | 9 | 27 | 25 | 51 | 75 | 98 | 547 | 355 | 463 | 383 | 373 | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 263 | 34 | 34 | 403 | 34 | 34 | 399 | 34 | 34 | 399 | 238 | 238 | 238 | 192 | 34 | 446 | 36 | 36 | 223 | 36 |
Best forecast wave conditions in Ericeira | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Coxos Surf forecast
The above surf forecast table for Coxos provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Coxos can be found by selecting the local surf guide option on the grey menu. Our Coxos 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 (Coxos) 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 Coxos 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.
Are you planning a holiday in Ericeira? If you are looking for accommodation near Coxos, camping, hotels and holiday cottages in Ericeira, consider staying in Torres Vedras which is 18 km (11 miles) away. Other places in and around Ericeira where you can find information about places to rent, and car hire include Sintra which is 22 km (14 miles) away, Rio de Mouro, Cacem and Loures.











