
Surf Forecasts:
Coxos surf forecast from 5 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 4PM (local time) - 7ft (2.1m), 11s period, NNW swell with 972 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 11s and forecast to arrive on Thursday (Sep 10) 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 14s period and expected on Friday (Sep 11) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Thu 10th Sep) | 7ft (2.1m) 11s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, let's get into the real talk about the next couple of weeks. The first half of this stretch is a total bust. From now through the 13th, it's a constant battle with cross-onshore winds from the north and northwest, just trashing anything that tries to come in. There's swell, but it's all chopped up and ugly. The energy is there, but it's not clean. You're better off staying home.
The big standout is Coxos, a reef that needs the right angle. The light at the end of the tunnel comes on the morning of Monday the 14th. We're looking at a solid 8ft swell from the NNW with a 9-second period, and the wind is glassy out of the WSW at just 3 mph. The combined wave energy is strong (997). That's as clean as it gets here. The water is around 68°, which is normal for this time of year. This is a window for the experts – that 8ft is pushing it for anyone who's not comfortable on a bigger day. Expect crowds to be a problem, as the conditions will be prime.
The next morning, Tuesday the 15th, is also a good one. It's a touch smaller at 5ft from the NW, but with a clean cross-offshore breeze from the ESE. That's a recipe for some nice, lined-up waves. The energy is moderate (462), but it's a much more manageable size for a wider range of surfers.
Looking further out, the morning of Thursday the 17th shows a promising 8ft from the NNW, but with a lighter onshore breeze from the same direction. The energy is very high (1135), but it's deep in the second week, so treat it as a cool possibility, not a sure thing. It's a powerful, long-period swell that will love Coxos' reef.
Honestly, for the first week and a half, it's a tough slog. There's a solid gap from now until the 14th with no real recommendations. Once that glassy morning hits, it'll be worth the wait. But until then, the constant wind makes this setup look more interesting for the kite surfers than for paddle surfing. Mark your calendar for the morning of the 14th – that's the one to chase.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sat afternoon, min 17°C on Mon night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Fri morning, min 17°C on Wed night). Winds increasing (light winds from the NNW on Tue night, fresh winds from the NNW by Wed afternoon). | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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 13 | NNW 12 | NW 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 9 | NW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 11 | NNW 7 | NNW 8 | NNW 7 | NNW 7 |
Wave Graph | ||||||||||||||||||||
120 | 494 | 464 | 347 | 660 | 880 | 713 | 469 | 302 | 194 | 148 | 216 | 596 | 627 | 499 | 972 | 349 | 486 | 286 | 192 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:33PM2.12m | 11:12AM2.31m | 00:04AM2.23m | 12:30PM2.52m | 1:11AM2.43m | 1:28PM2.77m | 2:02AM2.63m | 2:16PM3.00m | 2:45AM2.80m | 2:59PM3.15m | 3:25AM2.92m | 3:38PM3.21m | ||||||||
Low Tide | 4:07PM0.85m | 4:44AM0.93m | 5:46PM0.74m | 6:11AM0.79m | 6:58PM0.51m | 7:13AM0.57m | 7:52PM0.27m | 8:03AM0.35m | 8:37PM0.08m | 8:45AM0.17m | 9:16PM-0.04m | 9:25AM0.07m | 9:53PM-0.07m | |||||||
— | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | |
8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 23 | 22 | 19 | 22 | 21 | 18 | 20 | 20 | 20 | 19 | 19 | 18 | 19 | 19 | 18 | 21 | 21 | 19 |
Feels °C | 23 | 21 | 22 | 20 | 17 | 19 | 19 | 16 | 18 | 18 | 20 | 14 | 13 | 13 | 14 | 14 | 13 | 17 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 13 | NNW 12 | NW 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 9 | NW 9 | NW 8 | NW 15 | NNW 12 | NNW 12 | W 7 | NNW 9 | NNW 8 | W 7 | N 9 |
120 | 494 | 464 | 347 | 660 | 880 | 713 | 469 | 302 | 194 | 148 | 97 | 8 | 123 | 256 | 9 | 189 | 486 | 1 | 15 | |
Swell 2 Height (m) Direction Period (s) | NW 15 | NW 9 | WNW 9 | WNW 9 | NNW 10 | NNW 10 | — | — | — | — | — | — | — | NW 10 | W 8 | W 11 | W 7 | W 7 | W 8 | W 7 |
115 | 155 | 94 | 64 | 182 | 81 | — | — | — | — | — | — | — | 25 | 11 | 2 | 4 | 4 | 1 | 1 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | N 10 | SW 12 | WNW 18 | WNW 9 | — | — | — | — | — | — | — | — | — | W 8 | — | — | W 9 | — | W 8 |
6 | 2 | 5 | 61 | 47 | — | — | — | — | — | — | — | — | — | 10 | — | — | 2 | — | 1 | |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | NNW 4 | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | N 4 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 11 | NNW 7 | — | NNW 7 | NNW 7 |
15 | 12 | 6 | 11 | 34 | 42 | 45 | 40 | 48 | 28 | 4 | 216 | 596 | 627 | 499 | 972 | 349 | — | 286 | 192 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 34 | 34 | 34 | 399 | 34 | 34 | 222 | 34 | 37 | 408 | 132 | 583 | 428 | 132 | 126 | 442 | 263 | 36 | 446 | 45 |
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.










