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Surf Forecasts:
Coxos surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 1AM (local time) - 4ft (1.2m), 8s period, NNW swell with glassy winds.
- Most powerful swell: Sunday 23 Aug, 7AM (local time) - 10ft (3.0m), 9s period, NNW swell with 1,524 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 1AM (local time) - 4ft (1.2m), 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 1AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.3m and 8s. 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 9s and forecast to arrive on Sunday (Aug 23) at 7AM. 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 Thursday (Aug 20) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Wed 19th Aug) | 4ft (1.2m) 8s |
| Best Surf | 1AM (Wed 19th Aug) | 4ft (1.2m) 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
Howdy, Rusty here again, but in feet and Fahrenheit for you.
For Coxos, it’s a reef break that likes a solid NNW swell. Water temp is about 68°, just a bit below normal for this time of year.
The only real session to plan for is Tuesday morning, August 18th. You’ve got clean waves around 5 feet from the NNW with a light cross-offshore breeze. The energy is moderate, sitting at 275. It’s not massive, but it’s surfable and clean. The afternoon gets messy with a cross-shore wind.
After that, forget it. Wednesday the 19th drops off to about 3 feet and goes onshore. Thursday the 20th morning goes glassy but the swell is tiny – under 2 feet.
From Friday the 21st onwards, the swell is there. Friday morning hits 7 feet from the NNW, with strong energy, 1054. But a 30 km/h cross-onshore wind ruins it. Saturday the 22nd has 8-foot sets, but again, 35 km/h winds. It stays like this for days: big swell, strong wind, all messy and lumpy.
For paddle surfing, the only gem is that Tuesday morning. For the kite crowd, the rest of the run with size and consistent strong wind looks like the real deal.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Tue morning, min 18°C on Thu night). Winds increasing (calm on Wed night, fresh winds from the N by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Fri morning, min 18°C on Fri night). Mainly strong winds. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 8 | NNW 7 | NNW 7 | WNW 9 | WNW 9 | WNW 9 | NNW 8 | NNW 11 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 270 | 237 | 159 | 94 | 70 | 50 | 62 | 61 | 489 | 1054 | 613 | 712 | 976 | 865 | 1202 | 1177 | 844 | 931 | 629 | 314 | 183 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | glassy | cross | on | on | glassy | 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-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 | 1:04PM0.59m | 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 | ||||||||
 | |  | | |  |  | | | | | | | | | | | | | | | |
 | 6:52 | — | — | 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 | 24 | 23 | 21 | 23 | 23 | 20 | 22 | 22 | 19 | 20 | 20 | 19 | 20 | 20 | 19 | 20 | 20 | 18 | 20 | 20 | 18 |
Feels °C | 23 | 22 | 23 | 23 | 24 | 21 | 21 | 20 | 13 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 12 | 15 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 6 | NNW 5 | WNW 9 | NNW 12 | SSW 15 | SSW 15 | SSW 14 | WNW 9 | WNW 8 | SW 14 | SW 14 | SW 13 | W 9 | W 8 | W 8 | W 8 |
| kJ | 270 | 237 | 159 | 94 | 70 | 32 | 19 | 61 | 15 | 21 | 21 | 18 | 26 | 24 | 8 | 7 | 7 | 2 | 5 | 5 | 5 |
Swell 2 Height (m) Direction Period (s) | W 8 | SSW 16 | WNW 8 | WNW 8 | NW 10 | WNW 9 | WNW 9 | NW 11 | SSW 15 | SSW 15 | — | — | SSW 14 | SSW 14 | — | — | — | SW 13 | SW 13 | SW 13 | SW 12 |
| kJ | 5 | 24 | 13 | 12 | 27 | 50 | 62 | 30 | 21 | 21 | — | — | 20 | 20 | — | — | — | 7 | 7 | 7 | 6 |
Swell 3 Height (m) Direction Period (s) | SW 16 | WNW 8 | SSW 15 | SW 14 | WNW 8 | SSW 4 | SSW 4 | S 4 | SW 12 | — | — | — | — | — | — | — | — | — | — | — | W 11 |
| kJ | 10 | 6 | 21 | 33 | 6 | 2 | 2 | 1 | 6 | — | — | — | — | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | — | — | — | — | — | NNW 5 | NNW 8 | NNW 11 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 6 |
| kJ | — | 1 | — | — | — | — | — | 26 | 489 | 1054 | 613 | 712 | 976 | 865 | 1202 | 1177 | 844 | 931 | 629 | 314 | 183 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 31 | 0 | 4 | 41 | 12 | 0 | 399 | 399 | 37 | 547 | 222 | 555 | 446 | 508 | 932 | 387 | 238 | 286 | 442 | 286 |
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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