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Surf Forecasts:
Coxos surf forecast from 11 Aug 2026:
- Most powerful swell: Sunday 16 Aug, 4AM (local time) - 8ft (2.5m), 9s period, NNW swell with 977 kJ wave energy.
Best Forecast Surf Conditions for Coxos this week:
The most powerful waves expected at Coxos in the next 16 days are 2.5m 9s and forecast to arrive on Sunday (Aug 16) 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 0.3m 16s period and expected on Tuesday (Aug 18) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Sun 16th Aug) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break it down for Coxos.
Honestly, mate, it’s a grim outlook across the full 16 days. No standout sessions at all. The wind is relentless – a constant cross-on shore breeze from the north and north-northwest – and the surf quality is terrible across the board.
Right from the start, Tuesday the 11th, it’s messy. Swell a tiny 3ft from the NW with a weak 6-second period. Combined energy is low at (130), and a moderate cross-onshore breeze has it chopped up. Water temp is 70°, a touch above average, but you won’t feel it with that wind.
Wednesday the 12th through Friday the 14th brings a bit more size, up to 5ft by Friday afternoon, but the wind only gets stronger. The period stays short, under 8 seconds, and the wind stays cross-on and lumpy. Not worth it.
Saturday the 15th has the biggest swell at 8ft from the NNW, but it’s short-period (8 seconds) and the combined energy hits (878). Wind is howling at 18 to 22 mph, keeping it blown out. Over 8ft and cross-on, that’s only for experts, and even then, it looks like a kite day.
Sunday the 16th shows some “marginal” potential – 7ft to 7ft swell with a 9-second period and the wind turning onshore – but the quality is still junk.
From Monday the 17th through Wednesday the 26th, it’s the same story: moderate to strong cross-onshore winds, lumpy and messy. Swell sizes from 2ft to 6ft, with combined energy in the 200-595 range, but never clean. Coxos is a reef break exposed to the NNW, which matches the swell direction, but the constant wind ruins everything.
Bottom line: save your energy, there’s nothing here. A long, dry spell with no decent waves on the horizon.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Wed morning, min 19°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Fri morning, min 20°C on Fri night). Winds increasing (light winds from the NNW on Sun morning, strong winds from the NNW by Sun night). | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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 6 | NNW 12 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NNW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 52 | 53 | 77 | 120 | 154 | 154 | 154 | 237 | 175 | 163 | 187 | 435 | 878 | 857 | 877 | 747 | 615 | 422 | 479 | 412 | 344 |
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 | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:30PM2.98m | 3:01AM2.79m | 3:17PM3.16m | 3:45AM2.89m | 4:01PM3.26m | 4:27AM2.93m | 4:42PM3.25m | 5:07AM2.90m | 5:22PM3.14m | 5:45AM2.80m | 6:01PM2.95m | 6:23AM2.67m | 6:40PM2.71m | ||||||||
Low Tide | 8:50PM0.09m | 9:01AM0.19m | 9:36PM-0.05m | 9:45AM0.08m | 10:18PM-0.10m | 10:26AM0.04m | 10:58PM-0.07m | 11:05AM0.09m | 11:36PM0.05m | 11:44AM0.20m | 00:12AM0.24m | 12:23PM0.38m | 00:49AM0.46m | ||||||||
 | |  | | | | | | | | |  |  | |  |  | | | | | | |
 | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — |
 | — | 8:37 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — | — | 8:32 | — | — | 8:31 | — | — | 8:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 20 | 23 | 23 | 20 | 22 | 22 | 20 | 22 | 22 | 21 | 22 | 22 | 20 | 21 | 22 | 20 | 22 | 22 | 20 |
Feels °C | 21 | 21 | 19 | 22 | 22 | 19 | 21 | 20 | 18 | 19 | 19 | 18 | 19 | 19 | 16 | 21 | 20 | 15 | 16 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | NW 12 | NNW 12 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | — | S 18 | SW 18 | S 18 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | SW 15 | NNW 8 |
| kJ | 38 | 53 | 77 | 120 | 154 | 154 | 154 | 237 | 175 | 130 | 124 | — | 6 | 12 | 6 | 747 | 615 | 422 | 479 | 9 | 344 |
Swell 2 Height (m) Direction Period (s) | NW 9 | WNW 11 | NNW 10 | NNW 10 | NNW 9 | NNW 10 | NW 12 | — | — | — | — | — | — | — | — | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SSW 16 |
| kJ | 21 | 23 | 58 | 51 | 32 | 33 | 37 | — | — | — | — | — | — | — | — | 10 | 11 | 9 | 9 | 9 | 26 |
Swell 3 Height (m) Direction Period (s) | WNW 10 | NNW 8 | — | — | — | — | NNW 10 | — | — | — | — | — | — | — | — | — | — | — | SW 18 | — | SW 13 |
| kJ | 19 | 14 | — | — | — | — | 18 | — | — | — | — | — | — | — | — | — | — | — | 13 | — | 7 |
Wind waves Height (m) Direction Period (s) | NW 6 | NNW 6 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NNW 9 | — | — | — | — | NNW 8 | — |
| kJ | 52 | 39 | 42 | 37 | 42 | 44 | 51 | 92 | 97 | 163 | 187 | 435 | 878 | 857 | 877 | — | — | — | — | 412 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 37 | 547 | 34 | 34 | 223 | 34 | 34 | 420 | 126 | 126 | 473 | 232 | 238 | 472 | 192 | 36 | 226 | 238 | 508 | 668 | 575 |
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.
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