Surf Forecasts:
Coxos surf forecast from 28 Aug 2026:
- Best quality surf: Thursday 3 Sep, 10AM (local time) - 5ft (1.5m), 7s period, NNW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 1PM (local time) - 7.5ft (2.3m), 11s period, WNW swell with 1,192 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 10AM (local time) - 5ft (1.5m), 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 1.5m 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 2.3m 11s and forecast to arrive on Friday (Aug 28) at 1PM. 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 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Thu 3rd Sep) | 5ft (1.5m) 7s |
| Best Surf | 10AM (Thu 3rd Sep) | 5ft (1.5m) 7s |
| Most Powerful | 1PM (Fri 28th Aug) | 7.5ft (2.3m) 11s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, Rusty here, and we’re looking at Coxos. This is a reef setup that needs a very specific window to come alive, and over the next 16 days, there’s one very clear, very good moment to be in the water, and it’s coming right up.
The overall story is a long stretch of messy, onshore slop, but it kicks off with a genuine standout. The water temperature is sitting around 68°F, which is basically average for this time of year, so nothing wild there.
The pick of the window, and really the only time to get excited, is Friday morning, the 28th of August. We’ve got a solid groundswell running at 8 ft out of the WNW, with a period of 11 seconds—that’s got some proper grunt behind it. The combined swell energy is strong at (1284), so you know there’s plenty of power. But the kicker is the wind: glassy. A light 3 mph breeze from the NNE is making it clean as a whistle. This is an advanced spot, and with that size, it’s not one for learners, but for the experienced crew, this is absolutely firing. The swell direction is WNW, and the optimum here is NNW, so it’s a little off the perfect angle, but with that quality it’s still the clear winner. The only note is that it can get crowded here, so expect some company on the peak.
From Friday afternoon onward, it turns into a bit of a write-off. That glassy window slams shut fast. Saturday morning the 29th is already cross-on and choppy, and that sets the tone. We go through a run of days—all the way into the first week of September—where the wind is relentless out of the N and NNW, 12 to 22 mph, just tearing the surface up. Swell hangs around 4 ft to 6 ft, but it’s all junk. The energy drops off hard too, into the hundreds (check 437, 195, 234), and the short 8 to 10 second periods just mean weak, wind-bumped lines.
There’s a tiny flicker on Thursday morning, the 3rd of September. Swell drops to 5 ft but the wind swings ENE at 6 mph, giving us a light cross-offshore that cleans it up. It’s a "clean" read. But the swell period is a short 7 seconds, so it’s not going to have any real shape.
Friday the 4th of September morning is flat and glassy, with a tiny 3 ft swell, energy down to (86) – weak. There’s a long period swell showing up on the Friday afternoon (14 seconds) but it's tiny at 2 ft and the wind goes onshore, so nothing doing.
The second week is rough. From the 5th of September through the 12th, it's a consistent run of cross-on winds, big lumps of swell, and poor conditions. The 9th and 10th of September see some serious size—10 ft from the NNW—but the wind is cranking 15 to 19 mph cross-on, making it a messy, blown-out mess. That kind of size with that wind isn't fun for anyone on a surfboard, and with this being a reef break, that setup looks way more interesting for kite surfing than paddle surfing. The energy is high (1347, 1284) but it’s all onshore junk.
The very last day in the window, Saturday the 12th of September morning, has a 3 ft groundswell from the W with a long 15 second period, and the wind is lighter, 9 mph out of the N. The combined energy is back up to (615). But it’s a cross-on breeze, so it’s still marginal. That said, that long period groundswell on a reef like this could surprise at the right tide, but it’s a punt.
So really, it’s a one-hit window. Get out there Friday morning the 28th for a few hours of glory, and then expect a long, frustrating wait until the next proper swell lines up.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sun morning, min 18°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°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 10 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 |
Wave Graph | |||||||||||||||||||||
1284 | 1134 | 809 | 437 | 262 | 206 | 191 | 365 | 281 | 176 | 517 | 341 | 246 | 522 | 437 | 421 | 319 | 256 | 249 | 172 | 88 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross-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-on | cross-off | cross-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 | 20 | 18 | 22 | 22 | 25 | 29 | 25 | 24 |
Feels °C | 19 | 20 | 18 | 18 | 18 | 21 | 21 | 20 | 18 | 18 | 16 | 15 | 15 | 15 | 13 | 19 | 18 | 22 | 27 | 23 | 21 |
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 | SW 17 | NW 10 | NW 9 | W 8 | SSW 14 | SSW 15 | SSW 16 | SSW 15 | NNW 7 | NNW 7 | NNW 7 |
1284 | 1134 | 809 | 437 | 262 | 206 | 191 | 365 | 281 | 176 | 11 | 341 | 246 | 6 | 21 | 23 | 24 | 22 | 249 | 172 | 88 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | S 10 | S 10 | — | W 13 | — | W 12 | NW 11 | S 11 | SW 16 | W 9 | SSW 15 | — | — | — | — | SSW 14 | SSW 14 | WNW 8 |
— | — | — | 2 | 2 | — | 4 | — | 11 | 31 | 2 | 10 | 6 | 22 | — | — | — | — | 20 | 20 | 7 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 11 | S 11 | — | SSW 15 | — | — | — | — | — | — | — | SW 14 |
— | — | — | — | — | — | — | — | — | 9 | 2 | — | 23 | — | — | — | — | — | — | — | 8 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNW 3 | — | NNW 3 | — | NNW 4 | NW 10 | NNW 5 | NNW 6 | NNW 10 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | — | — | — |
— | — | — | — | — | 4 | — | 6 | — | 18 | 517 | 78 | 81 | 522 | 437 | 421 | 319 | 256 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 272 | 34 | 34 | 403 | 34 | 34 | 403 | 34 | 34 | 583 | 37 | 263 | 597 | 190 | 34 | 668 | 34 | 0 | 196 | 12 |
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.











