Surf Forecasts:
Coxos surf forecast from 28 Aug 2026:
- Best quality surf: Thursday 3 Sep, 10AM (local time) - 4.5ft (1.4m), 7s period, NNW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 7PM (local time) - 7ft (2.2m), 10s period, NW swell with 1,046 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 10AM (local time) - 4.5ft (1.4m), 7s period with NNW 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 Thursday (Sep 03) at 10AM. The primary swell is predicted to be 1.4m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Coxos in the next 16 days are 2.2m 10s and forecast to arrive on Friday (Aug 28) 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 0.2m 15s period and expected on Tuesday (Sep 01) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Thu 3rd Sep) | 4.5ft (1.4m) 7s |
| Best Surf | 10AM (Thu 3rd Sep) | 4.5ft (1.4m) 7s |
| Most Powerful | 7PM (Fri 28th Aug) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, let’s get into it. The first proper window of surf we’re looking at is Friday morning, August 28th, and honestly, it’s a bit of a tease because it sets the bar and then things go quiet for a stretch. That morning, Coxos is the only game in town, and it’s offering up a clean 8ft of WNW groundswell with a solid 11-second period. The energy behind it is strong, with a combined reading of 1284, and the wind is dead glassy from the WNW at a mere 3 mph. That’s the kind of clean, powerful setup that gets the heart rate up. It’s an advanced reef break, so this is not the day for the faint-hearted, but for those who know the lineup, it’s going to be firing. The water is sitting at 68°, which is about average for the time of year, so nothing weird there.
But here’s the rub – that Friday afternoon, the wind swings around to a fresh NW at 12 mph, blowing onshore. The swell is still there at 7ft, but the surface is gonna get chopped up. From Friday afternoon all the way through to Wednesday, September 2nd, it’s a real washout. The wind stays mostly cross-onshore, gusting anywhere from 12 to 22 mph, and while the swell hangs around in the 4ft to 7ft range, it’s going to be lumpy, messy, and ultimately pretty poor. There’s a stretch of about five days there where I wouldn’t even bother paddling out unless you’re a glutton for punishment. The energy drops too, dipping into the low hundreds, which tells you it’s weak and unruly.
Now, if you’re willing to wait, there’s a glimmer of hope on Thursday morning, September 3rd. The wind goes light and cross-offshore from the ENE at 6 mph, and the surf cleans right up. Swell is a modest 5ft from the NNW, but the period has dropped to a short 7 seconds, and the energy is down at 208. It’s surfable, and it’ll be clean, but it’s not going to be a classic. The afternoon looks marginal again, so make the most of that morning session.
After that, it’s another grind. Friday the 4th is tiny, just 2ft of weak, short-period swell, and the weekend is full of cross-onshore junk. The week that follows is more of the same – small, messy, and blown out. The swell tries to build again on Thursday, September 10th, with 7ft of NNW swell and an 8-second period, but the wind is cross-onshore again, and it’s just not clean. The energy is moderate, around 587, but it’s not going to be worth the paddle for most.
Bottom line: this is a bleak 16-day outlook for Coxos. The one true standout is that Friday morning, August 28th. Get it while it’s glassy and powerful. Everything else is either too small, too windy, or just plain messy. There’s a good gap in quality from that morning right through until Thursday the 3rd, and then again after that, it’s pretty flat and unfriendly. It’s one of those stretches where you take the good window when it comes and don’t look back.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sun morning, min 17°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Wed night, min 17°C on Tue night). Winds decreasing (fresh winds from the N on Tue afternoon, light winds from the NE by Wed night). | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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 11 | 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 7 | NNW 7 | NNW 7 | NNW 7 |
Wave Graph | |||||||||||||||||||||
1284 | 1134 | 809 | 437 | 262 | 211 | 191 | 399 | 257 | 230 | 384 | 341 | 263 | 627 | 437 | 475 | 310 | 249 | 208 | 148 | 72 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | 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 | cross-on | cross-on | cross-on | cross-off | on | cross-on |
High Tide | 3:46PM2.98m | 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 | ||||||||
7:01 | — | — | 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 | 21 | 19 | 20 | 20 | 20 | 22 | 22 | 19 | 20 | 20 | 18 | 19 | 19 | 18 | 22 | 22 | 24 | 29 | 25 | 24 |
Feels °C | 21 | 20 | 18 | 19 | 18 | 21 | 21 | 20 | 18 | 17 | 17 | 14 | 15 | 14 | 14 | 19 | 18 | 22 | 27 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | 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 | NNW 8 | SSW 16 | NNW 7 | NNW 7 | NNW 7 | NNW 7 |
1284 | 1134 | 809 | 437 | 262 | 211 | 191 | 399 | 257 | 230 | 384 | 341 | 263 | 22 | 21 | 475 | 24 | 249 | 208 | 148 | 72 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | S 10 | S 10 | — | W 13 | — | W 12 | NW 11 | SW 17 | SW 16 | SSW 15 | — | — | SSW 16 | — | SSW 15 | SSW 14 | SSW 14 | WNW 8 |
— | — | — | 2 | 2 | — | 4 | — | 11 | 31 | 11 | 10 | 23 | — | — | 24 | — | 22 | 20 | 20 | 6 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 11 | S 11 | — | — | — | — | — | — | — | — | W 7 | SW 14 |
— | — | — | — | — | — | — | — | — | 9 | 2 | — | — | — | — | — | — | — | — | 1 | 8 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNW 3 | — | NNW 3 | N 4 | N 4 | NNW 5 | NNW 6 | NNW 6 | NNW 9 | NNW 7 | — | NNW 8 | — | — | — | — |
— | — | — | — | — | 2 | — | 7 | 9 | 26 | 37 | 90 | 94 | 627 | 437 | — | 310 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 263 | 34 | 34 | 399 | 34 | 34 | 399 | 34 | 37 | 399 | 238 | 263 | 428 | 190 | 36 | 226 | 34 | 0 | 190 | 1 |
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.











