Surf Forecasts:
Coxos surf forecast from 26 Aug 2026:
- Most powerful swell: Friday 28 Aug, 1PM (local time) - 7ft (2.2m), 11s period, WNW swell with 1,082 kJ wave energy.
Best Forecast Surf Conditions for Coxos this week:
The most powerful waves expected at Coxos in the next 16 days are 2.2m 11s and forecast to arrive on Friday (Aug 28) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Thursday (Aug 27) at 4AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Fri 28th Aug) | 7ft (2.2m) 11s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, let’s talk about what’s coming up in the water at Coxos.
First off, we’ve got a rough looking start. Wednesday the 26th and Thursday the 27th are basically write-offs. That swell is being trashed by strong cross-onshore winds – mostly from the west – and you’re looking at messy, poor quality surf. The wave energy is weak to moderate (90 to 464), so not exactly pumping anyway. Don’t bother paddling out.
The first real chance of something decent shows up Friday morning the 28th. The swell picks up a bit – about 7ft from the WNW with a period stretching to 11 seconds. That’s a nice groundswell, but the wind is still cross-onshore and it’s marked as marginal, not clean. The energy jumps up to strong (1054) though, which means there’s some grunt behind it. You might find a wave if you’re patient, but it’s not going to be your best session.
Then we hit a real dry spell. From Saturday the 29th right through to early September, it’s mostly poor or marginal conditions. The wind stays cross-onshore from the north or NNW, and the swell is inconsistent and on the smaller side. There’s a little bump on Sunday afternoon the 30th with a 5ft NW swell and a 10-second period, but again, the wind messes it up. Not worth getting excited about.
Now, keep your eyes on Thursday the 3rd of September. That morning is the standout window for this outlook. The swell is 5ft from the NNW with an 8-second period, but the magic is in the wind: glassy. Absolute flat calm. That’s rare, and when Coxos goes glassy, the reef can line up beautifully. The energy is moderate (322), but with clean conditions you’ll get some fun, peeling waves. It’s a reef setup, so it’s for advanced surfers – and it’s fairly consistent and often crowded, so expect company.
After that, there’s another lull until Tuesday the 8th of September. The morning sees a solid 6ft swell from the NNW with moderate energy (783), and the wind is light cross-shore. It’s still marginal, but there’s potential for a few corners if you pick your tide. Then Wednesday the 9th morning looks even better – 6ft from the NNW, glassy again, and the forecast calls for very good surf. That’s the real gem of the second week. The period is 9 seconds, so it’s not a long-period groundswell, but when it’s glassy at Coxos, you don’t care.
The very last entry on the 10th of September has a tiny 2ft WSW swell with a very long 15-second period and glassy wind – that’s a long-period groundswell. It’ll be super clean but very small, and those long-period swells can be tricky on a reef. Might be worth a look for a longboard if the tide’s right.
So, bottom line: the first week is mostly a bust. The best windows are the mornings of Thursday the 3rd and Wednesday the 9th of September, when the wind drops to glassy and the swell is solid. Those are your sessions. Everything else is either blown out or too weak. Keep an eye on the forecasts – conditions can shift, but as it stands, those two mornings are the ones to circle on your calendar.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Wed morning. Warm (max 21°C on Wed morning, min 18°C on Wed night). Winds decreasing (fresh winds from the WSW on Wed night, light winds from the WSW by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun morning, min 17°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | WSW 5 | W 6 | W 8 | W 7 | W 8 | WNW 9 | WNW 11 | WNW 11 | NW 10 | NW 9 | NW 8 | NNW 8 | NW 8 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NNW 9 | NNW 8 | NNW 8 |
Wave Graph | |||||||||||||||||||||
69 | 175 | 266 | 407 | 458 | 560 | 1054 | 903 | 546 | 370 | 262 | 158 | 149 | 527 | 441 | 357 | 502 | 626 | 637 | 559 | 471 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:43PM2.72m | 3:03AM2.57m | 3:15PM2.87m | 3:34AM2.69m | 3:46PM2.98m | 4:05AM2.78m | 4:17PM3.03m | 4:37AM2.82m | 4:50PM3.02m | 5:10AM2.82m | 5:24PM2.94m | 5:46AM2.76m | 6:02PM2.80m | ||||||||
Low Tide | 8:28AM0.54m | 8:57PM0.38m | 9:01AM0.39m | 9:28PM0.24m | 9:32AM0.26m | 9:59PM0.14m | 10:04AM0.19m | 10:29PM0.09m | 10:37AM0.16m | 11:01PM0.10m | 11:11AM0.19m | 11:35PM0.18m | 11:48AM0.28m | 00:12AM0.31m | |||||||
7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | |
— | 8:17 | — | — | 8:15 | — | — | 8:15 | — | — | 8:13 | — | — | 8:12 | — | — | 8:09 | — | — | 8:08 | — | |
mm | 10 | — | 6 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 20 | 20 | 19 | 21 | 21 | 19 | 20 | 20 | 19 | 22 | 22 | 19 | 20 | 20 | 18 | 19 | 19 | 18 |
Feels °C | 18 | 19 | 19 | 15 | 16 | 17 | 21 | 20 | 18 | 17 | 17 | 18 | 22 | 22 | 18 | 16 | 16 | 14 | 15 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | NNW 6 | W 6 | W 8 | SW 11 | SW 11 | WNW 9 | WNW 11 | WNW 11 | NW 10 | NW 9 | NNW 8 | NNW 8 | NW 8 | NW 10 | NW 10 | WNW 11 | SW 17 | SW 16 | SSW 15 | SSW 15 | SSW 14 |
15 | 175 | 266 | 5 | 5 | 560 | 1054 | 903 | 546 | 370 | 22 | 158 | 149 | 527 | 441 | 23 | 11 | 10 | 23 | 22 | 21 | |
Swell 2 Height (m) Direction Period (s) | NW 10 | SW 11 | SW 11 | — | NW 12 | NNW 9 | S 10 | — | — | S 10 | S 10 | — | NW 11 | — | WNW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 |
4 | 5 | 5 | — | 6 | 50 | 2 | — | — | 2 | 2 | — | 63 | — | 14 | 5 | 5 | 5 | 5 | 4 | 4 | |
Swell 3 Height (m) Direction Period (s) | W 9 | — | — | — | — | NW 10 | — | — | — | — | — | — | W 13 | — | SW 12 | SW 18 | — | — | — | — | — |
2 | — | — | — | — | 16 | — | — | — | — | — | — | 3 | — | 6 | 12 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 5 | — | — | W 7 | W 8 | — | — | — | NNW 3 | — | NW 8 | — | — | NW 3 | — | NW 9 | NW 9 | NW 9 | NNW 9 | NNW 8 | NNW 8 |
69 | — | — | 407 | 458 | — | — | — | 3 | — | 262 | — | — | 5 | — | 357 | 502 | 626 | 637 | 559 | 471 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 416 | 414 | 41 | 403 | 223 | 34 | 37 | 37 | 34 | 34 | 403 | 34 | 34 | 399 | 34 | 37 | 399 | 238 | 238 | 238 | 126 |
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.











