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Surf Forecasts:
Coxos surf forecast from 25 Aug 2026:
- Most powerful swell: Friday 28 Aug, 7AM (local time) - 8ft (2.5m), 12s period, WNW swell with 1,807 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 12s and forecast to arrive on Friday (Aug 28) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Aug 26) at 7AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Fri 28th Aug) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, listen up. Rusty here, giving you the full picture for Coxos over the next couple weeks.
We’re staring down a rough start. The first time we even get a sniff of something worth paddling out for is Friday morning, 28 August. That’s a solid stretch of nothing but poor conditions to sit through. For a reef that’s fairly consistent, this is a real bummer. The water’s sitting at 66°, which is about 3° colder than normal for this time of year—a bit of a chill, so grab that 4/3.
That Friday the 28th, we finally get a pulse: a 8ft swell out of the WNW, with an 11-second period, and the wave energy is pumping at 1490. That’s serious power. But here’s the problem: the wind is a moderate cross-onshore breeze. It’s not clean, it’s choppy. You’ll get big, lumpy walls, but it’s a marginal call with the tide and the wind. If you’re an expert and don’t mind the bump, you might snag a few, but it won't be your session of the year.
Looking way out, the biggest offering comes on Monday, 7 September. That morning we’ve got another 8ft swell from the NW, but with a very long 12-second period and a massive 1915 wave energy. That’s an enormous amount of power. It could be a world-class day if the wind cooperated, but it doesn’t. It’s fresh cross-onshore again. The same story hits Tuesday, 8 September, with an 8ft swell from the NW and 10-second period (1540 energy), but still that damn cross-onshore wind. Then that Tuesday afternoon, we see a wild 4ft swell from the WNW with a 16-second period (1318 energy). That groundswell is pure gold for a reef, but the wind is still fresh cross-onshore. It’s a straight-up tragedy of wind ruining incredible swell.
Honestly, over this whole 16-day window, there isn’t one single session where the wind and swell are friends. The reef is an exposed magnet for that sweet NW swell, but the wind is almost always cross or onshore. For a paddle surfer, it’s a long wait for a clean window. If you’ve got a kite and some skills, this setup might actually be more interesting than trying to surf that chop.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Wed morning. Warm (max 22°C on Tue morning, min 16°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun morning, min 17°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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 7 | WNW 7 | WNW 6 | WSW 6 | W 7 | W 8 | W 8 | WNW 8 | W 8 | WNW 11 | NW 10 | NW 10 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 9 | NW 9 | NNW 6 | NW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 166 | 114 | 62 | 81 | 287 | 405 | 535 | 556 | 412 | 1490 | 993 | 554 | 300 | 173 | 88 | 167 | 160 | 328 | 168 | 122 | 528 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross-off | 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 | 2:08PM2.54m | 2:30AM2.42m | 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 | ||||||||
Low Tide | 8:24PM0.55m | 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 | ||||||||
 |  |  |  | |  |  | | | | |  | | | | | | | | | | |
 | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — |
 | — | 8:19 | — | — | 8:17 | — | — | 8:15 | — | — | 8:15 | — | — | 8:13 | — | — | 8:12 | — | — | 8:09 | — |
mm | — | — | — | 4 | — | 6 | 2 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 20 | 21 | 21 | 20 | 20 | 21 | 20 | 20 | 20 | 17 | 20 | 21 | 19 | 22 | 22 | 20 | 19 | 20 | 17 |
Feels °C | 21 | 21 | 20 | 18 | 19 | 20 | 16 | 17 | 18 | 17 | 16 | 13 | 17 | 19 | 19 | 21 | 21 | 20 | 15 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | WNW 7 | WNW 7 | WNW 6 | NNW 6 | SW 11 | W 8 | SW 11 | S 11 | W 8 | WNW 11 | NW 10 | NW 10 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 9 | NW 9 | NW 8 | SW 16 |
| kJ | 166 | 114 | 62 | 15 | 5 | 405 | 5 | 2 | 412 | 1490 | 993 | 554 | 300 | 173 | 88 | 167 | 160 | 328 | 168 | 72 | 10 |
Swell 2 Height (m) Direction Period (s) | N 7 | SW 12 | NW 11 | NW 10 | SW 11 | SW 11 | — | NW 12 | WNW 11 | — | — | — | S 10 | S 10 | — | W 13 | NNW 10 | S 10 | SW 18 | SW 17 | S 9 |
| kJ | 1 | 6 | 5 | 4 | 5 | 5 | — | 6 | 167 | — | — | — | 2 | 2 | — | 3 | 71 | 2 | 12 | 11 | 2 |
Swell 3 Height (m) Direction Period (s) | SW 12 | W 10 | W 10 | W 9 | — | — | — | — | NNW 9 | — | — | — | — | — | — | — | W 12 | — | S 10 | S 9 | — |
| kJ | 6 | 2 | 2 | 2 | — | — | — | — | 70 | — | — | — | — | — | — | — | 3 | — | 2 | 2 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WSW 6 | W 7 | — | W 8 | WNW 8 | — | — | — | — | — | NNW 4 | NNW 4 | — | — | NNW 4 | NNW 5 | NNW 6 | NW 9 |
| kJ | — | — | — | 81 | 287 | — | 535 | 556 | — | — | — | — | — | 21 | 19 | — | — | 22 | 42 | 122 | 528 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 37 | 403 | 45 | 403 | 411 | 41 | 403 | 399 | 36 | 32 | 263 | 34 | 34 | 403 | 99 | 34 | 399 | 34 | 263 | 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.
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