
Surf Forecasts:
Coxos surf forecast from 8 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 1PM (local time) - 6.5ft (2.0m), 8s period, NNW swell with 496 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 8s and forecast to arrive on Saturday (Aug 15) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 12s period and expected on Monday (Aug 10) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Sat 15th Aug) | 6.5ft (2.0m) 8s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, crew, let’s talk about what’s on the cards for Coxos. I’ve got to be straight with you – this is a tough run. The whole 16-day window is a grind, with no real green lights for a proper session. The swell is there at times, but the wind is just never your mate, and the quality just isn’t lining up. Coxos is a world-class reef, but it’s going to be a frustrating watch for most of this period.
Kicking off from Saturday the 8th, it’s flat and weak. We’re talking a tiny 2ft swell from the west, with a short period of 8 seconds and very weak energy (54). A WNW breeze is blowing straight onshore, so it’s a complete write-off. Sunday the 9th through to the middle of the following week just keeps the same story: small, weak swell, mostly cross-onshore winds from the north or northwest, and the wave comment is consistently “poor.” The energy is low, barely cracking 100-200 (combined energy 100-227), and the swell period is short, around 7-9 seconds.
There’s a slight bump in size around Thursday the 13th, with the swell pushing to 4ft, and the energy climbs a bit (334), but the wind is a fresh cross-onshore from the NNW at 35 km/h, making it lumpy and messy. Not worth the paddle.
The real tease comes on the weekend of the 15th and 16th of August. Saturday the 15th sees the swell jump to 6ft from the NNW, with a period of 8 seconds and energy hitting 510. But the wind is still cross-onshore, moderate at 25 km/h, and the surf is rated poor. Sunday the 16th actually has a bit of hope: a 7ft NNW swell with 8-second period, energy up to 634, and the wind drops to a light 10 km/h – but it’s still cross-onshore. The notes say “marginal surf forecast or questionable tide conditions,” which just means the conditions aren’t clean enough to call it. The water temp is about 69°F, which is pretty average for this time of year, so no surprises there.
Monday the 17th and Tuesday the 18th are similar: 5ft to 6ft swell, light winds, but still cross-onshore. The energy is dropping back down to 328-444. It’s all a bit of a “what could have been” situation.
The final weekend of the 22nd and 23rd of August brings a proper swell – 8ft from the NNW, with a 9-second period. The energy is massive, hitting 1322 on Friday the 21st morning. But the wind is the deal-breaker. On Friday, it’s a light cross-shore, so it’s “marginal.” But by Saturday the 22nd, the wind is howling from the north at 35-45 km/h, making it a complete mess. For a reef like Coxos, that kind of wind is just not going to work. The swell is too big for beginners anyway (over 8ft), and with that wind, it’s really only for experts – and even then, it’s not going to be pretty.
The only standout I can see is the morning of Friday the 21st of August. The swell is a solid 8ft from the NNW, the period is 9 seconds, and the wind is light from the WSW at just 5 km/h, with a cross-shore direction. The energy is huge (1322), and it’s the one window where the conditions might line up. But it’s still rated “marginal” due to tide or other factors, so it’s a gamble. For a surfer who knows Coxos, that’s the one to watch, but don’t book your flights just yet. The rest of the run is a skip.
This is a frustrating outlook, but with the swell energy this high, the potential is there – it just needs the wind to swing. For now, it’s a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Sat afternoon, min 19°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Tue afternoon, min 19°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 7 | WNW 7 | WNW 7 | WNW 7 | NW 8 | NW 8 | NW 7 | NW 12 | NNW 12 | WNW 10 | WNW 9 | WNW 10 | WNW 9 | WNW 9 | WNW 11 | WNW 10 | NNW 6 | NNW 7 | NNW 7 |
Wave Graph | ||||||||||||||||||||
33 | 89 | 86 | 86 | 94 | 60 | 82 | 23 | 42 | 53 | 77 | 115 | 154 | 144 | 147 | 265 | 179 | 146 | 171 | 198 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | cross-on | cross-on | cross-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 | 00:00AM2.29m | 12:33PM2.50m | 1:13AM2.45m | 1:37PM2.74m | 2:11AM2.63m | 2:30PM2.98m | 3:01AM2.79m | 3:17PM3.16m | 3:45AM2.89m | 4:01PM3.26m | 4:27AM2.93m | 4:42PM3.25m | ||||||||
Low Tide | 5:40PM0.74m | 6:12AM0.73m | 6:58PM0.54m | 7:19AM0.55m | 7:59PM0.31m | 8:14AM0.36m | 8:50PM0.09m | 9:01AM0.19m | 9:36PM-0.05m | 9:45AM0.08m | 10:18PM-0.10m | 10:26AM0.04m | 10:58PM-0.07m | |||||||
— | — | 6:45 | — | — | 6:45 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | |
8:42 | — | — | 8:39 | — | — | 8:38 | — | — | 8:37 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 22 | 22 | 20 | 22 | 22 | 20 | 22 | 22 | 19 | 22 | 22 | 19 | 22 | 22 | 20 | 21 | 21 | 20 |
Feels °C | 24 | 22 | 21 | 21 | 20 | 21 | 21 | 19 | 21 | 21 | 18 | 21 | 21 | 17 | 20 | 19 | 17 | 18 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | W 8 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | NW 8 | NW 8 | NW 7 | NW 9 | NNW 12 | WNW 10 | WNW 9 | WNW 10 | WNW 9 | WNW 9 | WNW 11 | WNW 10 | WNW 9 | WNW 9 | NW 8 |
33 | 89 | 86 | 86 | 94 | 60 | 82 | 23 | 21 | 53 | 77 | 115 | 154 | 144 | 147 | 265 | 179 | 130 | 101 | 100 | |
Swell 2 Height (m) Direction Period (s) | NNW 8 | N 7 | NNW 11 | NNW 10 | NNW 10 | S 12 | NW 11 | W 6 | NW 12 | WNW 11 | NNW 10 | NNW 10 | NNW 9 | NNW 10 | NW 12 | NNW 9 | — | — | — | — |
20 | 9 | 47 | 39 | 63 | 3 | 5 | 11 | 38 | 23 | 58 | 51 | 47 | 33 | 72 | 16 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | S 12 | NNW 12 | N 7 | N 6 | W 12 | — | S 12 | NNW 10 | WNW 10 | WNW 9 | — | — | — | — | NNW 10 | — | — | — | — | — |
3 | 15 | 4 | 1 | 3 | — | 3 | 20 | 19 | 8 | — | — | — | — | 18 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WNW 2 | — | — | — | — | WNW 7 | NNW 3 | NNW 4 | NW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NNW 7 | NNW 7 |
1 | — | — | — | — | 40 | 7 | 16 | 42 | 51 | 44 | 31 | 26 | 34 | 41 | 53 | 78 | 146 | 171 | 198 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 403 | 34 | 34 | 387 | 34 | 34 | 442 | 126 | 126 | 399 | 34 | 34 | 37 | 34 | 34 | 404 | 37 | 126 | 428 | 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.











