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Surf Forecasts:
Coxos surf forecast from 15 Aug 2026:
- Best quality surf: Sunday 16 Aug, 10AM (local time) - 7ft (2.1m), 9s period, NNW swell with glassy winds.
- Most powerful swell: Friday 21 Aug, 10AM (local time) - 10ft (3.0m), 8s period, NNW swell with 1,173 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 10AM (local time) - 7ft (2.1m), 9s 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 Sunday (Aug 16) at 10AM. The primary swell is predicted to be 2.1m and 9s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Coxos in the next 16 days are 3.0m 8s and forecast to arrive on Friday (Aug 21) 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 0.4m 2s period and expected on Tuesday (Aug 18) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 16th Aug) | 7ft (2.1m) 9s |
| Best Surf | 10AM (Sun 16th Aug) | 7ft (2.1m) 9s |
| Most Powerful | 10AM (Fri 21st Aug) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, let’s get into what’s happening at Coxos.
The opening weekend is rough. Saturday the 15th is a full-on miss – a 2.2m NNW swell, but a 19 mph cross-onshore wind just tears it apart. Water temp is 68°F, right about normal for now. The wave energy is moderate at 575, but the quality is junk.
Sunday the 16th, though, that’s the session to circle. The swell is still 2.1m out of the NNW, but the wind drops to a glassy 3 mph from the NNE. It’s clean, it’s calm, and the wave energy jumps to 656. This is the clear standout for the whole forecast. It’s an advanced reef break, so the shape should be there, but it’s not a beginner spot. Period is 9 seconds – decent groundswell, nothing extreme.
Monday the 17th is also clean – 1.6m swell with a light 3 mph offshore breeze. Wave energy at 348. Good, but Sunday is better.
Tuesday and Wednesday mornings offer some clean windows with the wind swinging offshore, but the swell shrinks to 1.3m and then 0.9m, and the energy drops to 221 and then 101. Surfable, but small and weak.
Then the wind turns nasty. From Thursday the 20th onward, it’s mostly cross-onshore and strong. Friday the 21st is a beast: a 25 mph cross-onshore wind with a 3.0m swell, wave energy at 1188. That’s a massive, messy wall – expert-only for size, but the wind makes it dangerous. Not worth it.
We get a few lighter wind mornings around the 26th and 27th, but the swell stays over 1.7m with cross-on winds, so expect choppy, hard-to-read conditions. The 27th has a light 6 mph wind, but it’s still cross-on.
The last few days of the month, the 29th and 30th, are small and weak. The 30th morning has a 1.1m swell with a 6-second period and a light offshore wind, so it’s clean but gutless – wave energy down to 93. Little rollers, nothing special.
There’s a long run of poor surf from the 20th through the 26th. The one true standout is Sunday the 16th morning. That’s the call.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Mon morning, min 20°C on Sat night). Winds decreasing (fresh winds from the NNW on Sat afternoon, calm by Mon night). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Tue morning, min 18°C on Thu night). Winds increasing (light winds from the S on Tue night, strong winds from the N by Thu night). | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | WNW 10 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 575 | 587 | 834 | 656 | 412 | 232 | 344 | 306 | 212 | 211 | 168 | 119 | 89 | 83 | 55 | 65 | 587 | 844 | 1173 | 908 | 824 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | glassy | on | cross-on | glassy | cross-on | cross | cross-off | cross | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:22PM3.14m | 5:45AM2.80m | 6:01PM2.95m | 6:23AM2.67m | 6:40PM2.71m | 7:02AM2.50m | 7:21PM2.44m | 7:44AM2.32m | 8:08PM2.18m | 8:37AM2.15m | 9:12PM1.98m | 9:50AM2.03m | 10:42PM1.88m | ||||||||
Low Tide | 11:05AM0.09m | 11:36PM0.05m | 11:44AM0.20m | 00:12AM0.24m | 12:23PM0.38m | 00:49AM0.46m | 1:04PM0.59m | 1:27AM0.69m | 1:50PM0.80m | 2:12AM0.91m | 2:50PM1.00m | 3:15AM1.09m | 4:18PM1.11m | ||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 8:32 | — | — | 8:31 | — | — | 8:30 | — | — | 8:29 | — | — | 8:28 | — | — | 8:25 | — | — | 8:24 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 20 | 26 | 24 | 22 | 28 | 25 | 23 | 24 | 24 | 21 | 24 | 23 | 21 | 21 | 21 | 19 | 20 | 20 | 19 |
Feels °C | 21 | 21 | 18 | 27 | 23 | 23 | 27 | 24 | 27 | 23 | 23 | 22 | 23 | 22 | 22 | 20 | 18 | 13 | 14 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | — | SW 18 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 6 | NNW 7 | SW 13 | WNW 9 | WNW 9 | WNW 9 | WNW 9 |
| kJ | — | 12 | 834 | 656 | 412 | 232 | 344 | 306 | 212 | 211 | 168 | 119 | 89 | 83 | 47 | 57 | 7 | 26 | 15 | 15 | 8 |
Swell 2 Height (m) Direction Period (s) | — | — | S 18 | SW 16 | SW 16 | SW 15 | W 7 | W 9 | WNW 8 | W 8 | SSW 16 | WNW 8 | WNW 8 | SSW 3 | WNW 10 | WNW 9 | SW 16 | SW 15 | SSW 15 | SSW 15 | SSW 14 |
| kJ | — | — | 6 | 10 | 11 | 9 | 4 | 6 | 7 | 10 | 24 | 13 | 12 | 2 | 55 | 65 | 10 | 9 | 21 | 21 | 18 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 15 | SW 15 | SSW 16 | SW 16 | WNW 8 | SSW 15 | SW 14 | WNW 11 | SSW 4 | SSW 4 | — | SW 12 | — | — | — |
| kJ | — | — | — | — | — | — | 9 | 9 | 26 | 10 | 6 | 21 | 33 | 23 | 3 | 2 | — | 6 | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 8 | NNW 8 | — | — | — | — | — | SW 2 | — | — | SW 3 | — | — | — | — | — | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 |
| kJ | 575 | 587 | — | — | — | — | — | 1 | — | — | 2 | — | — | — | — | — | 587 | 844 | 1173 | 908 | 824 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 138 | 583 | 36 | 0 | 144 | 36 | 0 | 477 | 41 | 0 | 446 | 0 | 0 | 22 | 34 | 34 | 223 | 238 | 238 | 597 | 238 |
Best forecast wave conditions in Ericeira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Coxos surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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