
Surf Forecasts:
Coxos surf forecast from 9 Sep 2026:
- Best quality surf: Sunday 13 Sep, 10AM (local time) - 3.5ft (1.0m), 13s period, NW swell with glassy winds.
- Most powerful swell: Thursday 10 Sep, 4PM (local time) - 6ft (1.8m), 11s period, NNW swell with 759 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 10AM (local time) - 3.5ft (1.0m), 13s period with NW swell.
Best Forecast Surf Conditions for Coxos this week:
The surf forecast for Coxos over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 10AM. The primary swell is predicted to be 1.0m and 13s period with a secondary swell of 0.6m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Coxos in the next 16 days are 1.8m 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 11s period and expected on Sunday (Sep 13) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 13th Sep) | 3.5ft (1.0m) 13s |
| Best Surf | 10AM (Sun 13th Sep) | 3.5ft (1.0m) 13s |
| Most Powerful | 4PM (Thu 10th Sep) | 6ft (1.8m) 11s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at what’s headed our way for Coxos. This is a solid reef break that needs the right conditions to shine, and over the next two weeks, we’re going to have to be patient.
The first week is a bit of a write-off. For the first several days, from Wednesday the 9th right through to the end of the week, it’s plagued by a fresh cross-onshore wind. There’s a mix of swell around 3ft to 6ft from the NNW, but it’s all lumpy and choppy. Not worth paddling out for. The combined energy is moderate, but the wind kills it. The water is sitting at 66°, which is a bit colder than normal for this time of year.
We finally get a bit of a breather on Sunday morning, the 13th. Glassy conditions, a clean 3ft swell from the NW with a long 13-second period. The energy is moderate (425). This is a proper window of opportunity. For a reef like Coxos, that long period groundswell will wrap in nicely. It’s a small window, but it’s the best of the first week.
The next real standout is a long way off, but it’s a big one. On Saturday the 19th, we’ve got a clean morning with a light ESE cross-offshore wind and a solid 7ft NNW swell. The energy is strong (700). That’s clean, powerful surf at Coxos. Then Sunday the 20th morning is even better, with a moderate ESE offshore wind and the same 7ft NNW swell. Strong energy (683) and clean conditions. Honestly, Saturday the 19th morning is the pick of the whole forecast.
But hold onto your board, because Monday the 21st morning is the one that’s got me talking. A 10ft swell from the NNW with a very long 13-second period, light offshore wind, and the combined energy is a massive 2718. That’s serious groundswell, and it’s going to be pumping. This is expert territory only – over 8ft, it’s too big for beginners. The long period means it’ll be better shaped with longer lulls, which is perfect for a reef like Coxos. The crowds are often here, so expect company for Saturday and Monday.
The last few days of the forecast taper off, with the 22nd and 23rd offering smaller, cleaner options but nothing that compares to that weekend.
So, the bottom line: the first week is a struggle. Don’t bother before the 13th. The standout is Saturday the 19th morning, with Sunday the 20th morning and Monday the 21st morning as the big, powerful, expert-level highlights. The 21st is the biggest, but the 19th might be the best combination of size and that perfect offshore wind. Keep your eyes on that window.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Sat morning, min 17°C on Thu night). Winds decreasing (fresh winds from the NNW on Wed afternoon, light winds from the N by Sat morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Mon morning, min 19°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 8 | NNW 8 | NNW 8 | NNW 11 | NNW 10 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 7 | NW 15 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NNW 10 | NW 10 | NNW 9 | NNW 7 |
Wave Graph | ||||||||||||||||||||
447 | 471 | 362 | 759 | 223 | 133 | 82 | 85 | 80 | 83 | 110 | 342 | 584 | 537 | 308 | 220 | 168 | 98 | 188 | 289 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:45AM2.80m | 2:59PM3.15m | 3:25AM2.92m | 3:38PM3.21m | 4:01AM2.96m | 4:15PM3.17m | 4:36AM2.94m | 4:51PM3.04m | 5:10AM2.86m | 5:26PM2.85m | 5:44AM2.73m | 6:02PM2.62m | ||||||||
Low Tide | 8:37PM0.08m | 8:45AM0.17m | 9:16PM-0.04m | 9:25AM0.07m | 9:53PM-0.07m | 10:02AM0.03m | 10:27PM-0.02m | 10:38AM0.08m | 11:00PM0.11m | 11:13AM0.19m | 11:32PM0.29m | 11:48AM0.36m | 00:04AM0.50m | |||||||
— | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | |
7:55 | — | — | 7:54 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 18 | 21 | 20 | 18 | 22 | 22 | 19 | 25 | 24 | 24 | 28 | 25 | 25 | 29 | 27 | 22 | 22 | 21 | 19 |
Feels °C | 13 | 13 | 18 | 16 | 14 | 19 | 19 | 18 | 24 | 23 | 22 | 26 | 24 | 24 | 26 | 24 | 21 | 21 | 19 | 15 |
Swell 1 Height (m) Direction Period (s) | NW 15 | NNW 12 | NNW 11 | WNW 7 | NNW 10 | NNW 10 | NNW 9 | NNW 6 | NNW 6 | WNW 9 | NNW 7 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NNW 10 | NW 10 | WNW 8 | WNW 11 |
8 | 85 | 183 | 11 | 223 | 100 | 66 | 85 | 80 | 69 | 104 | 342 | 584 | 537 | 308 | 220 | 168 | 98 | 21 | 76 | |
Swell 2 Height (m) Direction Period (s) | N 15 | NW 10 | W 11 | W 11 | W 7 | W 7 | W 7 | WNW 9 | WNW 10 | NW 18 | WNW 9 | NNW 7 | N 7 | NNW 6 | N 6 | W 9 | W 8 | WNW 8 | WNW 12 | N 14 |
4 | 25 | 2 | 2 | 9 | 4 | 4 | 16 | 55 | 12 | 64 | 43 | 24 | 32 | 17 | 39 | 36 | 22 | 14 | 4 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | NW 10 | W 9 | W 8 | NNW 9 | N 9 | NW 12 | NW 15 | W 9 | S 12 | S 11 | W 9 | S 11 | S 11 | S 10 | N 15 | — |
— | — | — | — | 4 | 2 | 6 | 17 | 6 | 6 | 110 | 40 | 3 | 2 | 40 | 2 | 2 | 2 | 4 | — | |
Wind waves Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 11 | NNW 7 | NNW 6 | NNW 6 | — | — | NNW 7 | — | — | — | — | — | NNW 6 | NNW 4 | N 4 | NNW 9 | NNW 7 |
447 | 471 | 362 | 759 | 166 | 133 | 82 | — | — | 83 | — | — | — | — | — | 12 | 7 | 7 | 188 | 289 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 418 | 132 | 34 | 442 | 95 | 37 | 223 | 36 | 1 | 222 | 1 | 0 | 34 | 1 | 34 | 225 | 34 | 34 | 399 | 238 |
Best forecast wave conditions in Ericeira | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
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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.










