
Surf Forecasts:
Coxos surf forecast from 8 Sep 2026:
- Best quality surf: Monday 14 Sep, 7AM (local time) - 4ft (1.2m), 12s period, NW swell with glassy winds.
- Most powerful swell: Sunday 13 Sep, 7PM (local time) - 6ft (1.8m), 12s period, NW swell with 980 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 7AM (local time) - 4ft (1.2m), 12s 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 Monday (Sep 14) at 7AM. The primary swell is predicted to be 1.2m and 12s period with a secondary swell of 0.9m 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 12s and forecast to arrive on Sunday (Sep 13) at 7PM. 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 13s period and expected on Saturday (Sep 12) at 4AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 14th Sep) | 4ft (1.2m) 12s |
| Best Surf | 7AM (Mon 14th Sep) | 4ft (1.2m) 12s |
| Most Powerful | 7PM (Sun 13th Sep) | 6ft (1.8m) 12s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s talk about what’s coming up for Coxos.
Right now, the surf is pretty much a write-off. We’ve got a solid week of poor conditions ahead, with strong north winds ruining the shape and making things choppy and lumpy. The swell is there, but it’s not doing us any favours. From Tuesday morning, September 8th, right through to the end of the week, it’s a mess. The waves are mostly small and weak, with a combined energy around 300 to 600 (moderate), but the wind is just relentless. Saturday morning, September 12th, things get a little less grim – the wind drops to a light breeze, but the swell is still a bit jumbled and the conditions are only marginal. That’s a skip for me.
The first real glimmer of hope comes on Sunday morning, September 13th. We’ve got a longer-period groundswell showing up from the NW, with a 13-second period and a solid combined energy of 806 (moderate to strong). The swell is only 4ft, but the wind is a slight air, just a light cross-onshore ripple. It’s still a bit on the cross side, but the quality is there. The water temperature is about average for the time of year, nothing unusual.
Now, Monday morning, September 14th, is where it gets interesting. The wind goes glassy. Absolutely glassy. North-northeast at 3 mph, zero wind. The swell is 4ft from the NW with a 12-second period and a combined energy of 465 (moderate). This is the standout of the first week. Clean, lined-up waves at Coxos, with that classic reef setup. Expect some long, proper waves. Crowds are likely here, but for that kind of glass, it’s worth it.
The second week gets a bit more interesting. Thursday morning, September 17th, we see a bigger pulse of swell – 7ft from the NNW with a combined energy of 1113 (strong). That’s a big wave for this spot. The wind is light offshore from the NW at 3 mph, which is perfect. But that’s a serious wave, more for the experienced crew. 7ft on a reef, with that period, is going to be powerful and a bit intimidating for beginners.
Then Friday morning, September 18th, is another potential beauty. The swell drops to 7ft, but the wind switches to a light cross-offshore from the SSE at 6 mph, making for clean faces. The combined energy is 631 (moderate to strong). This is a really good window, but it’s a week and a half out, so keep an eye on it.
The last real stand-out is a week later, on Sunday morning, September 20th. Another glassy morning, with a light NE breeze at 3 mph. The swell is 4ft from the NW at a super long 13-second period, with a combined energy of 499 (moderate). It’s a smaller day, but that glass will make it incredibly fun. Perfect for a longboard or a mid-length.
After that, the wind picks up again and the forecast gets messy. The last few days of the window show strong north winds and very strong, but blown-out, swell. It’s a no-go.
So, the picks: Monday morning, September 14th, for the glass and clean lines. And for the bigger, more powerful stuff, Thursday morning, September 17th, for the experienced surfers. That second one is a bit further out, but it’s got the potential to be a proper session.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Tue morning, min 17°C on Mon night). Winds increasing (light winds from the NNW on Tue night, fresh winds from the NNW by Wed afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Sun morning, min 18°C on Thu night). Winds decreasing (fresh winds from the N on Thu night, light winds from the N by Sun morning). | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | WNW 10 | NW 9 | NW 9 | NW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 11 | NNW 10 | NNW 10 | NNW 6 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NW 13 | NW 12 | NW 12 | NW 12 | NW 11 | NW 10 |
Wave Graph | |||||||||||||||||||||
302 | 194 | 126 | 274 | 419 | 471 | 483 | 260 | 625 | 100 | 113 | 256 | 344 | 270 | 231 | 444 | 555 | 528 | 376 | 287 | 196 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | glassy | cross-on | cross-on |
High Tide | 1:28PM2.77m | 2:02AM2.63m | 2:16PM3.00m | 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 | ||||||||
Low Tide | 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 | 10:02AM0.03m | 10:27PM-0.02m | 10:38AM0.08m | 11:00PM0.11m | 11:13AM0.19m | 11:32PM0.29m | |||||||
7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | |
— | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 20 | 19 | 19 | 18 | 20 | 20 | 18 | 21 | 21 | 19 | 26 | 23 | 24 | 28 | 25 | 24 | 28 | 26 | 21 |
Feels °C | 18 | 19 | 21 | 15 | 13 | 13 | 17 | 16 | 13 | 18 | 18 | 18 | 26 | 23 | 22 | 27 | 25 | 23 | 26 | 25 | 22 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | NW 9 | NW 9 | N 13 | NW 15 | NNW 12 | NNW 11 | NNW 11 | W 7 | NNW 10 | N 9 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NW 12 | NW 12 | NW 12 | NW 11 | NW 10 |
302 | 194 | 126 | 4 | 8 | 85 | 145 | 260 | 4 | 100 | 44 | 256 | 344 | 270 | 231 | 362 | 555 | 528 | 376 | 287 | 196 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | N 15 | NW 10 | — | WNW 7 | NW 10 | W 7 | W 7 | N 9 | WNW 10 | WNW 10 | NW 15 | NW 13 | NNW 8 | NNW 7 | NNW 8 | NNW 7 | NNW 6 |
— | — | — | — | 4 | 25 | — | 11 | 4 | 4 | 4 | 14 | 20 | 51 | 226 | 444 | 176 | 94 | 89 | 55 | 21 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 11 | — | W 9 | W 8 | S 13 | SW 13 | NW 12 | WNW 9 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 |
— | — | — | — | — | — | — | 4 | — | 2 | 6 | 3 | 7 | 23 | 45 | 3 | 3 | 2 | 2 | 2 | 2 | |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 4 | — | NW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 10 | NNW 6 | NNW 6 | — | — | — | — | — | — | — | — | — | — |
23 | 10 | — | 274 | 419 | 471 | 483 | 242 | 625 | 95 | 113 | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 299 | 132 | 247 | 399 | 132 | 34 | 428 | 126 | 126 | 223 | 37 | 1 | 35 | 32 | 5 | 34 | 32 | 0 | 34 | 34 |
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.










