Surf Forecasts:
Coxos surf forecast from 29 Aug 2026:
- Most powerful swell: Tuesday 1 Sep, 4AM (local time) - 6.5ft (2.0m), 9s period, NNW swell with 674 kJ wave energy.
Best Forecast Surf Conditions for Coxos this week:
The most powerful waves expected at Coxos in the next 16 days are 2.0m 9s and forecast to arrive on Tuesday (Sep 01) at 4AM. 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 Tuesday (Sep 01) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Tue 1st Sep) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, mates, let's talk about Coxos for the next couple weeks. I'm gonna level with you, it's a tough slog. The water's about 67°, which is a touch cooler than normal for this time of year – just a hint of fall creeping in.
From Saturday, August 29th, all the way through Monday, September 7th, it's a write-off. We've got swell in the water, mostly 4ft to 6ft from the NW and NNW, but the wind is just relentless. It's a constant cross-onshore breeze, 15 to 35 km/h, chopping everything to bits. The combined swell energy is moderate to strong (numbers like 437, 516, 710), but it doesn't matter. Every session is labeled "poor surf conditions." Don't even bother.
We finally get a window on Friday, September 4th. The morning has a light cross-onshore breeze, but the swell is turning on. It's a long-period groundswell from the NW at 14 seconds, pushing 3ft to 4ft. The energy is moderate (488). By the afternoon, the wind goes onshore, and we get a 4ft NW swell with a 12-second period and an energy reading of 636. It's still just "marginal," but it's the best we've seen.
The one to really circle is Sunday, September 13th. The morning has almost no wind – just a light breeze from the north – and a 3ft swell from the NNW with a massive 15-second period. The energy reading is a solid 617 (moderate). For a reef like Coxos, that's perfect. The afternoon looks even better: a 4ft NNW swell at 13 seconds with a strong energy reading of 1121. The wind stays light. This is the winner. The lineup will be clean, the waves will be lined up, and you'll get those long, drawn-out rides. The spot can get crowded, so expect some company, but it'll be worth it. That long-period groundswell is made for this setup.
So, the plan is simple: skip the first ten days. It's a waste of energy. Wait for the 13th. That's your day. Keep an eye on the 11th and 12th too, as things might clean up, but the 13th is the standout.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sun morning, min 17°C on Sun night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Wed morning, min 17°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | NW 9 | NW 8 | NW 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NW 14 | NW 12 | NW 11 |
Wave Graph | |||||||||||||||||||||
437 | 286 | 211 | 244 | 423 | 203 | 179 | 348 | 299 | 516 | 449 | 524 | 364 | 302 | 208 | 172 | 178 | 149 | 304 | 520 | 375 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | 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 | cross-on | on | cross-on |
High Tide | 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 | 7:12AM2.51m | 7:40PM2.39m | 8:13AM2.35m | 8:55PM2.19m | ||||||||
Low Tide | 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 | 1:22PM0.60m | 1:49AM0.71m | 2:31PM0.77m | 3:05AM0.89m | |||||||
7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | |
— | 8:13 | — | — | 8:12 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 19 | 21 | 21 | 18 | 20 | 20 | 18 | 19 | 19 | 18 | 21 | 21 | 18 | 21 | 21 | 18 | 20 | 20 | 19 |
Feels °C | 19 | 18 | 18 | 19 | 18 | 15 | 16 | 16 | 14 | 15 | 14 | 14 | 20 | 19 | 16 | 19 | 18 | 16 | 20 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 8 | NW 8 | NW 8 | — | NW 9 | NW 9 | NW 10 | NW 10 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 16 | NNW 7 | NNW 7 | SSW 14 | WNW 8 | NNW 7 | NW 12 | NW 11 |
437 | 286 | 211 | 244 | — | 203 | 179 | 348 | 299 | 23 | 22 | 21 | 23 | 24 | 208 | 172 | 20 | 26 | 158 | 520 | 375 | |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | — | W 13 | — | W 12 | NNW 11 | SW 17 | SW 16 | — | — | — | — | — | SSW 15 | WNW 9 | — | NW 16 | NW 14 | NW 8 | SW 13 |
2 | 2 | — | 4 | — | 11 | 51 | 11 | 10 | — | — | — | — | — | 22 | 8 | — | 10 | 304 | 17 | 7 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 11 | S 11 | — | — | — | — | — | — | — | SSW 14 | — | SW 14 | WNW 8 | SW 13 | — |
— | — | — | — | — | — | 9 | 2 | — | — | — | — | — | — | — | 20 | — | 8 | 26 | 7 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | NNW 3 | NW 9 | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | — | — | NNW 7 | NNW 7 | — | NNW 7 | NNW 7 |
— | — | — | 3 | 423 | 55 | 72 | 84 | 197 | 516 | 449 | 524 | 364 | 302 | — | — | 178 | 149 | — | 99 | 105 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 482 | 34 | 34 | 399 | 37 | 238 | 418 | 238 | 238 | 238 | 132 | 36 | 494 | 45 | 37 | 428 | 34 | 34 | 399 | 34 |
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.











