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Surf Forecasts:
Coxos surf forecast from 5 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 4PM (local time) - 6ft (1.9m), 11s period, NNW swell with 822 kJ wave energy.
Best Forecast Surf Conditions for Coxos this week:
The most powerful waves expected at Coxos in the next 16 days are 1.9m 11s and forecast to arrive on Thursday (Sep 10) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 13s period and expected on Friday (Sep 11) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Thu 10th Sep) | 6ft (1.9m) 11s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, let me break down the next 16 days for Coxos. Honestly, we’re looking at a tough stretch.
The first week is full of swell but completely chewed up by a solid northerly wind. There’s one session that stands out as the best of the run, and it’s about a week away.
Saturday morning is glassy but tiny – 3ft from the WNW, combined energy is only 125. You can surf it, but it’s nothing to write home about. The first real chance comes on September 13th, that Sunday morning. A light ENE cross-off breeze cleans up a 5ft NNW swell, combined energy jumps to 457. That’s your first proper window. Water temp is about 68°, right where it should be for this time of year.
Then Monday the 14th offers another clean morning. Light SSW cross-off winds, 4ft from the NNW, combined energy of 266. It’s not big, but it’s clean.
As we go into the third week, the swells drop off. The morning of the 19th of September has a clean 2ft from the WNW with a light SW cross-off, but it’s weak – combined energy is only 169. A small wave for a longboard.
The single standout day is September 13th. Coxos is a reef that loves a NNW swell, and with that cross-off wind, it’ll be clean. Crowds are often here, so get there early. That morning, a 5ft swell with 8-second period – short period, but clean conditions make it workable.
Overall, there are long gaps. From now until the 12th, it’s mostly poor with strong onshore wind. After the 14th, it’s mostly average. So mark your calendar for the 13th.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sat morning, min 17°C on Mon night). Winds increasing (calm on Sat morning, fresh winds from the N by Mon morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Thu morning, min 17°C on Wed night). Winds increasing (light winds from the NNW on Tue night, fresh winds from the N by Wed afternoon). | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 9 | NW 9 | NW 13 | NNW 12 | NW 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 9 | NW 9 | NW 8 | NW 11 | NNW 8 | NNW 8 | NNW 11 | NNW 8 | NNW 8 | NNW 8 | NNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 101 | 120 | 494 | 464 | 347 | 557 | 774 | 701 | 452 | 302 | 194 | 93 | 151 | 716 | 759 | 512 | 822 | 373 | 388 | 276 | 206 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-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 |
High Tide | 10:33PM2.12m | 11:12AM2.31m | 00:04AM2.23m | 12:30PM2.52m | 1:11AM2.43m | 1:28PM2.77m | 2:02AM2.63m | 2:16PM3.00m | 2:45AM2.80m | 2:59PM3.15m | 3:25AM2.92m | 3:38PM3.21m | |||||||||
Low Tide | 4:07PM0.85m | 4:44AM0.93m | 5:46PM0.74m | 6:11AM0.79m | 6:58PM0.51m | 7:13AM0.57m | 7:52PM0.27m | 8:03AM0.35m | 8:37PM0.08m | 8:45AM0.17m | 9:16PM-0.04m | 9:25AM0.07m | 9:53PM-0.07m | ||||||||
 | |  | | | | | | | |  |  | | | | | | | | | | |
 | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 24 | 21 | 23 | 22 | 19 | 21 | 21 | 18 | 20 | 20 | 20 | 19 | 19 | 18 | 21 | 21 | 19 | 26 | 23 | 24 |
Feels °C | 26 | 23 | 21 | 21 | 19 | 17 | 18 | 19 | 16 | 18 | 19 | 21 | 14 | 13 | 13 | 18 | 17 | 17 | 22 | 20 | 23 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | NW 9 | NW 13 | NNW 12 | NW 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 9 | NW 9 | NNW 10 | NNW 14 | NNW 12 | NNW 8 | WNW 8 | W 7 | NNW 8 | W 7 | NNW 7 |
| kJ | 101 | 120 | 494 | 464 | 347 | 557 | 774 | 701 | 452 | 302 | 194 | 93 | 117 | 105 | 283 | 512 | 11 | 4 | 388 | 4 | 206 |
Swell 2 Height (m) Direction Period (s) | NNW 5 | NW 15 | NW 9 | WNW 9 | WNW 9 | NNW 10 | NNW 10 | — | NNW 9 | — | — | W 9 | WNW 8 | — | — | NNW 11 | — | — | W 7 | — | NW 11 |
| kJ | 13 | 115 | 132 | 106 | 64 | 182 | 63 | — | 8 | — | — | 39 | 22 | — | — | 239 | — | — | 4 | — | 5 |
Swell 3 Height (m) Direction Period (s) | NW 16 | SW 12 | N 10 | N 6 | WNW 18 | WNW 9 | — | — | — | — | — | — | NNW 16 | — | — | WNW 8 | — | — | S 14 | — | W 7 |
| kJ | 11 | 6 | 2 | 1 | 61 | 47 | — | — | — | — | — | — | 25 | — | — | 21 | — | — | 4 | — | 1 |
Wind waves Height (m) Direction Period (s) | — | NNW 5 | — | — | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 6 | NNW 5 | NW 8 | NW 11 | NNW 8 | — | NNW 11 | NNW 8 | — | NNW 8 | — |
| kJ | — | 11 | — | — | 17 | 62 | 62 | 78 | 67 | 53 | 45 | 9 | 151 | 716 | 759 | — | 822 | 373 | — | 276 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 34 | 34 | 34 | 226 | 34 | 34 | 433 | 34 | 37 | 263 | 34 | 232 | 547 | 132 | 34 | 226 | 36 | 29 | 190 | 32 |
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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