
Surf Forecasts:
Coxos surf forecast from 4 Sep 2026:
- Most powerful swell: Monday 7 Sep, 10AM (local time) - 5ft (1.5m), 12s period, WNW swell with 634 kJ wave energy.
Best Forecast Surf Conditions for Coxos this week:
The most powerful waves expected at Coxos in the next 16 days are 1.5m 12s and forecast to arrive on Monday (Sep 07) at 10AM. 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 Friday (Sep 04) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Mon 7th Sep) | 5ft (1.5m) 12s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s happening at Coxos over the next couple of weeks.
Honestly, this is a tough run to be excited about. For the first week and a half, pretty much everything’s a write-off. From Friday morning the 4th right through to Sunday the 13th, the wind’s mostly cross-onshore or howling from the north, and the wave quality is just not there. You’ll see some small swell around, but it’s messy, chopped up, and not worth paddling out for. There’s a brief moment on Saturday afternoon the 5th with a little NW swell around 3ft and onshore wind, but it’s only marginal. The combined wave energy is weak to moderate at best, sitting at 252, so nothing special.
The real hope starts to show from Monday the 14th. Monday morning sees a cleaner setup: a 5.2ft swell from the NNW, cross-offshore wind from the east at 15 km/h, and combined energy of 463 – moderate, but the conditions are sweet. That cross-offshore makes it clean. It’s not huge, but it’s rideable and way better than anything before.
Then Tuesday the 15th, the morning window looks better. Swell bumps up to 6.6ft from the NNW, wind is light cross-off from the ESE at only 10 km/h, and the combined energy is moderate at 476. Again, clean conditions. This one’s on the bigger side for beginners – 6.6ft is getting strong – so more for the experienced crew.
But the true standout? Wednesday the 16th – Saturday morning. This is the one to circle. On Wednesday morning, you’ve got 6.2ft of NNW swell, clean offshore wind from the SE at just 10 km/h (light breeze), and the combined energy jumps to 712 – that’s into the strong range. Conditions are clean, the swell direction matches the optimum (NNW), and it’s glassy. This is the best on offer. It’s a reef break, so long period groundswell (8 seconds isn’t super long, but it’s solid) will line up nicely. Expect clean, well-shaped waves. Crowds can be often at Coxos, so it might get a bit busy, but with quality like this, it’s worth it. Water temperature is about average for this time of year, so nothing unusual there.
Thursday the 17th morning also looks good – 5.6ft from the NNW, glassy with no wind, combined energy 489. That’s a nice follow-up session if you can get it.
After that, Friday and Saturday the 18th and 19th taper off a bit with smaller swell and more cross-onshore wind, so the window is really that Monday 14th through Thursday 17th stretch. There’s a solid gap of about nine days with no real recommendations at the start, so be patient. The forecast for the second week is promising but less certain, so keep an eye on it.
First call: Wednesday the 16th morning at Coxos. Offshore, clean, solid 6.2ft swell – that’s where it’s at.
Short Range ForecastMostly dry. Warm (max 29°C on Sat morning, min 21°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Mon morning, min 17°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 8 | WNW 8 | WNW 9 | WNW 9 | NW 9 | NW 13 | NNW 12 | NNW 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 10 | NNW 6 | NNW 6 | NW 8 | NNW 11 | NNW 13 | NNW 12 | NNW 11 |
Wave Graph | |||||||||||||||||||||
59 | 59 | 101 | 101 | 120 | 494 | 464 | 323 | 465 | 634 | 573 | 412 | 308 | 207 | 132 | 90 | 112 | 234 | 192 | 274 | 275 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | 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 | cross-on | cross-on | cross-on |
High Tide | 8:13AM2.35m | 8:55PM2.19m | 9:37AM2.25m | 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 | |||||||
Low Tide | 2:31PM0.77m | 3:05AM0.89m | 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 | ||||||||
7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | |
— | 8:04 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 26 | 28 | 29 | 25 | 22 | 23 | 22 | 19 | 21 | 21 | 18 | 20 | 20 | 20 | 21 | 20 | 18 | 20 | 21 | 19 |
Feels °C | 25 | 22 | 26 | 27 | 24 | 22 | 22 | 20 | 17 | 19 | 19 | 16 | 17 | 18 | 20 | 20 | 18 | 15 | 15 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 9 | WNW 9 | NW 9 | NW 13 | NNW 12 | NNW 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 10 | NW 9 | NW 8 | NW 8 | NNW 11 | NNW 10 | NNW 12 | NNW 11 |
59 | 59 | 101 | 101 | 120 | 494 | 464 | 323 | 465 | 634 | 573 | 412 | 308 | 207 | 132 | 70 | 112 | 234 | 168 | 274 | 275 | |
Swell 2 Height (m) Direction Period (s) | NNW 5 | NW 10 | SW 13 | NW 16 | NW 15 | WNW 9 | WNW 9 | WNW 9 | NNW 10 | NNW 10 | — | — | — | — | W 9 | WNW 8 | NNW 12 | W 8 | NNW 13 | W 7 | W 7 |
14 | 25 | 7 | 11 | 115 | 101 | 106 | 68 | 182 | 83 | — | — | — | — | 14 | 22 | 15 | 32 | 192 | 26 | 15 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | NW 5 | N 12 | N 11 | SW 12 | N 10 | SW 12 | WNW 18 | WNW 9 | — | — | — | — | — | — | N 14 | — | N 16 | W 7 | — | W 10 |
7 | 7 | 3 | 2 | 6 | 2 | 5 | 60 | 65 | — | — | — | — | — | — | 4 | — | 5 | 28 | — | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | NNW 5 | N 5 | N 6 | N 6 | N 6 | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 5 | NNW 5 | N 4 | NNW 8 | NNW 5 |
— | — | 23 | 15 | 17 | 15 | 6 | 30 | 44 | 44 | 56 | 75 | 150 | 131 | 131 | 90 | 48 | 28 | 14 | 125 | 33 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 32 | 32 | 32 | 34 | 1 | 34 | 225 | 34 | 37 | 387 | 34 | 34 | 399 | 138 | 138 | 428 | 238 | 36 | 541 | 541 |
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.










