Surf Forecasts:
Coxos surf forecast from 27 Aug 2026:
- Best quality surf: Friday 28 Aug, 7AM (local time) - 7.5ft (2.3m), 11s period, WNW swell with glassy winds.
- Most powerful swell: Friday 28 Aug, 10AM (local time) - 7.5ft (2.3m), 11s period, WNW swell with 1,284 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 4AM (local time) - 7ft (2.2m), 10s period with WNW 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 Friday (Aug 28) at 4AM. The primary swell is predicted to be 2.2m and 10s 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 2.3m 11s and forecast to arrive on Friday (Aug 28) at 10AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 15s period and expected on Tuesday (Sep 01) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 28th Aug) | 7ft (2.2m) 10s |
| Best Surf | 7AM (Fri 28th Aug) | 7.5ft (2.3m) 11s |
| Most Powerful | 10AM (Fri 28th Aug) | 7.5ft (2.3m) 11s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Friday morning, 28th August – This is the standout. Glassy conditions. A solid 2.3m swell rolling in from the WNW, with a solid 11-second period. That’s proper groundswell energy, with the combined energy sitting at a strong 1284. The wind is absolutely dead – glassy as a mirror. That’s a rare treat. This is going to be clean, powerful, and for experienced surfers only. Over 2.5m? No, but 2.3m with that period is serious. Coxos is a reef break, and it loves a good NW to WNW direction – the optimum here is NNW, so the WNW is a very strong match. It’ll be a bit more lined up than usual. Expect some grunty, hollow walls. Be aware that with that longer period, the sets will have a gap, but once they stand up, they’ll have plenty of push. This is the session to circle.
Friday afternoon the wind swings onshore from the NW at 20 km/h. That’ll turn things lumpy quick. The swell holds but the magic is gone.
Saturday 29th sees the swell backing off – 1.7m in the morning, dropping to 1.4m by afternoon, all straight cross-on wind. Choppy, no thanks.
Sunday 30th through to Thursday 3rd September is a long stretch of mediocre to poor conditions. Swell hangs around the 1.2m to 1.8m mark, but the wind is consistently cross-on from the north or NNW, often fresh to moderate. There’s a brief moment on the morning of the 3rd with a light breeze and 1.4m, but the period is a short 7 seconds and the cross-shore wind will have ripples. Just not clean enough.
Friday 4th September – Swell drops to tiny. 0.7m in the morning, 0.4m in the afternoon. Hardly worth a paddle. Combined energy is a weak 69.
Saturday 5th September – Now things get interesting again. Glassy morning, 1.1m of swell from the NW, but the period jumps to 11 seconds... and then by the afternoon it’s at 13 seconds. The combined energy hits 625. That is a beautiful, long-period groundswell. Now, caveat: at a beach break this long period can make waves too straight, but Coxos is a reef, so it will channel that energy into defined peaks. The morning looks glassy and clean – another top session for the handful who know. Afternoon sees a light cross-on from the west, but with that period it’ll still hold shape. This is your second standout, but it’s further out, so less certain.
Sunday 6th September keeps the long period (12 seconds) with glassy conditions in the morning. 1.2m, good energy. Clean lines. This is a solid session if you miss Saturday.
Monday 7th September – Morning has a light cross-off wind from the SSW, 1.3m from the NNW. Clean. That’s a nice bonus day.
From there, the swell and wind drop off, and the last few days of the window are small, poor, or rain-affected. The 10th and 11th are a mess with rain and fresh wind. Not your days.
So to boil it down: Friday 28th morning is the serious standout – glassy, 2.3m WNW groundswell, 11-second period, and that reef handling it beautifully. And Saturday 5th morning is the longer-range follow-up: glassy again, 1.1m but with a 13-second pulse, deep energy, clean.
Crowds? Coxos is the kind of spot where it’s often busy. On these standouts, expect a crew. That’s the price of quality.
Get after it.
- Rusty
Short Range ForecastMostly dry. Warm (max 21°C on Fri afternoon, min 18°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Sun afternoon, min 17°C on Mon night). Mainly fresh winds. | |||||||||||||||||||
Thu 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||
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) | W 8 | WNW 10 | WNW 11 | WNW 11 | NW 10 | NW 9 | NW 8 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | NNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 7 |
Wave Graph | ||||||||||||||||||||
597 | 862 | 1284 | 1134 | 809 | 481 | 295 | 187 | 182 | 341 | 263 | 199 | 311 | 305 | 235 | 523 | 352 | 506 | 400 | 286 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | glassy | 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 | cross-on | cross-on | cross-on |
High Tide | 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 | 6:25AM2.66m | 6:46PM2.61m | ||||||||
Low Tide | 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 | 12:31PM0.42m | 00:55AM0.50m | |||||||
— | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | |
8:15 | — | — | 8:15 | — | — | 8:13 | — | — | 8:12 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 20 | 21 | 19 | 20 | 20 | 19 | 21 | 21 | 19 | 20 | 20 | 18 | 19 | 20 | 19 | 20 | 21 | 19 |
Feels °C | 15 | 19 | 19 | 20 | 18 | 18 | 18 | 19 | 20 | 19 | 17 | 17 | 17 | 14 | 15 | 15 | 15 | 17 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | S 11 | WNW 10 | WNW 11 | WNW 11 | NW 10 | NW 9 | NW 8 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | SSW 15 | SSW 14 | SSW 15 | SSW 16 | SSW 15 |
2 | 862 | 1284 | 1134 | 809 | 481 | 295 | 187 | 182 | 341 | 263 | 199 | 311 | 305 | 235 | 22 | 21 | 23 | 24 | 22 | |
Swell 2 Height (m) Direction Period (s) | — | SW 11 | — | — | — | S 10 | S 10 | — | W 13 | — | W 12 | W 11 | SW 17 | SW 16 | SSW 15 | — | — | — | — | N 11 |
— | 4 | — | — | — | 2 | 2 | — | 3 | — | 10 | 9 | 11 | 10 | 23 | — | — | — | — | 2 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 18 | S 11 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | 12 | 2 | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | W 8 | — | — | — | — | — | — | NNW 4 | — | NNW 4 | N 4 | NNW 5 | N 5 | NNW 6 | NNW 6 | NNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 7 |
597 | — | — | — | — | — | — | 11 | — | 10 | 18 | 33 | 51 | 113 | 84 | 523 | 352 | 506 | 400 | 286 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 226 | 1 | 0 | 263 | 34 | 34 | 399 | 34 | 34 | 399 | 34 | 34 | 399 | 238 | 263 | 420 | 238 | 51 | 547 | 36 |
Best forecast wave conditions in Ericeira | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.











