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Surf Forecasts:
Coxos surf forecast from 20 Aug 2026:
- Best quality surf: Sunday 23 Aug, 7AM (local time) - 6.5ft (2.0m), 11s period, WNW swell with offshore winds.
- Most powerful swell: Sunday 23 Aug, 4AM (local time) - 6ft (1.9m), 12s period, WNW swell with 1,053 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 10PM (local time) - 3.5ft (1.1m), 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 Saturday (Aug 22) at 10PM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 0.5m and 16s. 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 1.9m 12s and forecast to arrive on Sunday (Aug 23) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Sunday (Aug 23) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 22nd Aug) | 3.5ft (1.1m) 9s |
| Best Surf | 7AM (Sun 23rd Aug) | 6.5ft (2.0m) 11s |
| Most Powerful | 4AM (Sun 23rd Aug) | 6ft (1.9m) 12s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, Rusty here again, same story in feet and miles.
So, this 16-day window is a tough one. The first real chance to surf doesn’t come until Sunday morning, the 23rd of August, and even then it’s a maybe. Big gap of nothing at the start.
The spot to watch is Coxos, a reef break for advanced surfers. It’s fairly consistent and loves a good NNW swell. Water temp is about 67°F, a bit cooler than average for this time of year – nothing extreme, but you’ll notice it.
The absolute best of the bunch is looking like Friday morning, the 4th of September. We’ve got a 8ft swell from the NNW, period around 8 seconds, and the wind is dead calm – glassy. That’s a winner. The wave energy is strong (705). The afternoon gets a light cross-onshore, but the morning is the key.
Before that, Sunday the 23rd morning has some size – 6ft from the WNW with a cross-off breeze, so it’ll be clean. But the wind is a fresh 35 km/h, and it’s still a marginal call.
The rest of the run is mostly poor or marginal. Swells between 5ft and 8ft pop up, but the wind is onshore, cross-onshore, or messy. Short period stuff (6-8 seconds) and lumpy conditions. The 24th morning has a clean cross-off, but the swell is 8ft from the WSW with a short 8-second period – not ideal.
The 4th of September morning is the only time it all comes together: glassy, clean, decent size, and at the right break. Keep an eye on it, but it’s a long way out.
For the rest, it’s mostly choppy and blown out. Kite surfers might have more fun on the windy, lumpy days.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Thu morning, min 18°C on Thu night). Winds increasing (light winds from the WNW on Thu morning, fresh winds from the N by Fri morning). | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Sun afternoon. Warm (max 22°C on Sun morning, min 20°C on Sun night). Winds decreasing (fresh winds from the SSW on Sun night, light winds from the WSW by Mon night). | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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 | WNW 9 | NNW 7 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | WNW 13 | WNW 11 | WNW 10 | W 9 | WSW 8 | W 8 | WSW 6 | WNW 6 | WNW 7 | WNW 6 | WNW 7 | WNW 9 | NW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 62 | 68 | 289 | 286 | 794 | 627 | 446 | 287 | 817 | 862 | 463 | 580 | 719 | 362 | 96 | 113 | 102 | 60 | 136 | 293 | 380 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross | cross | on | cross-on | cross-on |
High Tide | 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 | 2:08PM2.54m | 2:30AM2.42m | 2:43PM2.72m | 3:03AM2.57m | ||||||||
Low Tide | 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 | 7:53AM0.72m | 8:24PM0.55m | 8:28AM0.54m | 8:57PM0.38m | ||||||||
 | |  |  | | | | | |  |  |  | | | |  | |  | | | | |
 | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — |
 | — | 8:25 | — | — | 8:24 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:17 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | 5 | 6 | 1 | — | — | — | — | 2 | — | — | — |
Temp °C | 22 | 22 | 19 | 20 | 20 | 18 | 20 | 20 | 20 | 22 | 22 | 21 | 22 | 22 | 21 | 21 | 21 | 20 | 21 | 21 | 20 |
Feels °C | 23 | 22 | 15 | 16 | 16 | 15 | 19 | 18 | 20 | 18 | 20 | 19 | 20 | 21 | 21 | 20 | 20 | 20 | 19 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 9 | W 9 | NNW 11 | SSW 15 | WNW 9 | NNW 10 | NNW 9 | WNW 13 | WNW 11 | WNW 10 | W 9 | WSW 8 | NNW 8 | WSW 6 | WNW 6 | WNW 7 | WNW 6 | WNW 7 | WNW 9 | NW 9 |
| kJ | 62 | 68 | 39 | 286 | 21 | 42 | 446 | 287 | 817 | 862 | 463 | 580 | 719 | 13 | 96 | 113 | 102 | 60 | 136 | 293 | 380 |
Swell 2 Height (m) Direction Period (s) | NNW 5 | NW 11 | NW 10 | WNW 8 | W 11 | NNW 12 | W 9 | W 9 | NNW 9 | N 8 | N 8 | NNW 8 | NNW 8 | SW 13 | NW 7 | SW 12 | SW 12 | W 10 | SW 12 | SW 11 | SW 11 |
| kJ | 17 | 30 | 27 | 23 | 2 | 29 | 38 | 39 | 140 | 49 | 33 | 19 | 12 | 7 | 82 | 6 | 6 | 2 | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | NNW 12 | SW 13 | NNW 12 | SSW 15 | — | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 13 | SW 13 | SW 13 | SW 12 | — | W 10 | SW 12 | — | — | — |
| kJ | 14 | 7 | 31 | 21 | — | 18 | 20 | 20 | 20 | 18 | 17 | 7 | 7 | 7 | 6 | — | 2 | 6 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NNW 5 | NNW 7 | NNW 7 | NNW 10 | NNW 10 | — | — | — | S 4 | SSW 5 | SSW 6 | — | W 8 | — | — | — | — | — | — | — |
| kJ | — | 7 | 289 | 243 | 794 | 627 | — | — | — | 13 | 111 | 109 | — | 362 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 34 | 238 | 37 | 399 | 34 | 34 | 223 | 0 | 144 | 182 | 144 | 41 | 271 | 37 | 41 | 41 | 84 | 559 | 223 | 37 |
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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