Surf Forecasts:
Coxos surf forecast from 19 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 4AM (local time) - 3.5ft (1.1m), 8s period, NNW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 7AM (local time) - 10ft (3.0m), 9s period, NNW swell with 1,176 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 4AM (local time) - 3.5ft (1.1m), 8s 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 Wednesday (Aug 19) at 4AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.3m and 8s. 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 3.0m 9s and forecast to arrive on Sunday (Aug 23) at 7AM. Winds are predicted to be 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 Thursday (Aug 20) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 19th Aug) | 3.5ft (1.1m) 8s |
| Best Surf | 4AM (Wed 19th Aug) | 3.5ft (1.1m) 8s |
| Most Powerful | 7AM (Sun 23rd Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the table for the next couple of weeks.
We're looking at a pretty frustrating stretch, to be honest. The swell is coming, but the wind just won't play ball most of the time. Coxos is a reef setup that loves a clean NNW groundswell, and we get plenty of that direction, but the onshore and cross-onshore winds are going to ruin the party for the vast majority of the forecast. The water temp is sitting around 68°, which is about normal for this time of year, nothing wild there.
The only real glimmer of hope, the one standout, is first thing on Thursday morning, the 20th of August. We've got a tiny 2ft swell from the WNW, but the wind is forecast to be glassy. Absolutely dead calm. That's a massive positive. The energy is weak (100), but with a 9-second period, it'll be offering up some clean little lines on that reef. It won't be big, but it'll be the cleanest surf you'll see all week. Crowds are often an issue here, so with it being tiny and clean, expect a few others to have the same idea.
After that Thursday morning window, it goes downhill fast. From Thursday afternoon through the end of August, the wind is a relentless cross-on or onshore, mostly from the NNW. The swell builds, no doubt about it. We see a moderate 7ft on Friday the 21st (energy hitting 689), and it peaks around Sunday the 23rd with an 8ft swell from the NNW (energy at 975). That's solid, powerful surf, but with that 16 mph onshore wind, it's going to be a junky, lumpy mess. Not recommended for a paddle. The 8-second period on that peak swell is short, adding to the chop. If you're into kite surfing, that cross-on wind and plenty of swell might look interesting, but for a surfboard, it's a hard pass.
The second week of the forecast, from the 26th of August onwards, the swell drops right back. We see a 1.0ft day on the 26th, and then it hovers around 4ft to 5ft with a mix of NNW and NW swells. The wind stays stubbornly cross-on or onshore, and the periods are short, mostly 6 to 10 seconds. There's one morning on Tuesday the 1st of September with a 4ft swell and onshore winds, rated as marginal. The energy is low (249). It's not an inspiring outlook. The best bet for the whole 16-day window is that one glassy morning on the 20th. After that, look for a clear window or a change in the forecast, because the current conditions are not kind to us.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 23°C on Tue afternoon, min 18°C on Thu night). Winds increasing (calm on Tue night, fresh winds from the NNW by Thu afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Mon morning, min 18°C on Fri night). Mainly fresh winds. | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 7 | NNW 7 | NNW 6 | WNW 9 | NNW 5 | NNW 7 | NNW 8 | NNW 10 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 8 | NNW 9 | NNW 9 | NNW 8 | NNW 7 |
Wave Graph | ||||||||||||||||||||
237 | 159 | 94 | 68 | 50 | 62 | 61 | 344 | 447 | 961 | 644 | 763 | 707 | 820 | 975 | 597 | 815 | 785 | 476 | 327 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross-off | cross-on | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on |
High Tide | 7:21PM2.44m | 7:44AM2.32m | 8:08PM2.18m | 8:37AM2.15m | 9:12PM1.98m | 9:50AM2.03m | 10:42PM1.88m | 11:22AM2.03m | 00:11AM1.94m | 12:36PM2.16m | 1:11AM2.08m | 1:28PM2.34m | 1:54AM2.25m | |||||||
Low Tide | 1:27AM0.69m | 1:50PM0.80m | 2:12AM0.91m | 2:50PM1.00m | 3:15AM1.09m | 4:18PM1.11m | 4:48AM1.16m | 5:56PM1.07m | 6:14AM1.07m | 7:03PM0.92m | 7:12AM0.91m | 7:48PM0.74m | ||||||||
— | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | |
8:29 | — | — | 8:28 | — | — | 8:25 | — | — | 8:24 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 22 | 22 | 20 | 22 | 21 | 19 | 20 | 20 | 18 | 20 | 20 | 19 | 20 | 20 | 19 | 21 | 21 | 19 |
Feels °C | 23 | 23 | 23 | 22 | 21 | 20 | 19 | 14 | 15 | 15 | 13 | 16 | 16 | 14 | 17 | 17 | 15 | 17 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 6 | NNW 5 | WNW 9 | W 9 | NNW 11 | SSW 15 | SSW 14 | WNW 9 | WNW 9 | WNW 9 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 |
237 | 159 | 94 | 68 | 41 | 24 | 61 | 39 | 242 | 21 | 18 | 25 | 26 | 16 | 7 | 7 | 7 | 7 | 7 | 6 | |
Swell 2 Height (m) Direction Period (s) | SSW 16 | WNW 8 | WNW 8 | NW 10 | WNW 9 | WNW 9 | NW 11 | NW 12 | SSW 15 | — | — | SSW 14 | SSW 14 | SSW 14 | SSW 13 | — | — | — | — | — |
24 | 13 | 12 | 27 | 50 | 62 | 30 | 37 | 21 | — | — | 20 | 20 | 20 | 18 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | WNW 8 | SSW 15 | SW 14 | WNW 8 | SSW 13 | NNW 12 | SW 13 | NNW 10 | — | — | — | — | — | — | — | — | — | — | — | — |
6 | 21 | 33 | 6 | 17 | 14 | 7 | 10 | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 3 | — | — | — | — | — | NNW 5 | NNW 7 | NNW 8 | NNW 10 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 8 | NNW 9 | NNW 9 | NNW 8 | NNW 7 |
2 | — | — | — | — | — | 59 | 344 | 447 | 961 | 644 | 763 | 707 | 820 | 975 | 597 | 815 | 785 | 476 | 327 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 31 | 0 | 0 | 399 | 0 | 0 | 399 | 399 | 248 | 418 | 232 | 238 | 382 | 222 | 120 | 226 | 190 | 192 | 446 | 36 |
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.











