Surf Forecasts:
Coxos surf forecast from 9 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 4PM (local time) - 3.5ft (1.1m), 11s period, WNW swell with 265 kJ wave energy.
Best Forecast Surf Conditions for Coxos this week:
The most powerful waves expected at Coxos in the next 16 days are 1.1m 11s and forecast to arrive on Thursday (Aug 13) at 4PM. 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 | 4PM (Thu 13th Aug) | 3.5ft (1.1m) 11s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright folks, let's talk about what we've got on the cards. Straight up, this isn't looking like a classic run for us. The wind has been a stubborn bastard, blowing onshore and cross-onshore for days on end, keeping most sessions well below par. We've got a bit of a wait on our hands, honestly.
The first real flicker of hope doesn't show up until Sunday, the 16th of August. Even then, the conditions are pretty marginal, with onshore wind and a weak, short-period swell from the NW around 5ft, but the energy is still low (285). You wouldn't paddle out for that unless you were desperate.
Things start to get interesting heading into Monday, the 17th of August. The swell (Coxos) bumps up to a solid 7ft from the NNW, with a period of 9 seconds and a jump in energy (749). That's a lot more water moving around. The issue is the wind is still cross-onshore, but it's light – just 3 mph in the morning. That "light cross-onshore with small wind ripples" could clean up enough to make it workable. This is the one to keep an eye on if you're an advanced surfer. The 7ft is pushing into that expert-only territory.
Beyond that, the rest of the window fades back into onshore junk and smaller, weaker swell. Tuesday the 18th has some size leftover, but the wind picks up again and messes it up. The last week is mostly a write-off with tiny, weak, and windy conditions.
So, if you're after a window, pad your calendar for Monday, the 17th of August. It's the only one that has any real size and power on the table. Everything else looks like a good day to stay on the beach and watch the clouds.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sun morning, min 19°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Wed morning, min 19°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 7 | NW 8 | NW 8 | NW 7 | NW 6 | NNW 12 | WNW 10 | WNW 9 | WNW 10 | WNW 9 | WNW 9 | WNW 11 | WNW 10 | NNW 7 | NNW 7 | NNW 6 | NNW 7 | NNW 7 | WNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 86 | 91 | 76 | 60 | 82 | 23 | 52 | 52 | 77 | 118 | 154 | 144 | 147 | 265 | 183 | 163 | 166 | 145 | 204 | 149 | 109 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | 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 |
High Tide | 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 | 5:07AM2.90m | 5:22PM3.14m | ||||||||
Low Tide | 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 | 11:05AM0.09m | 11:36PM0.05m | |||||||
 | |  | | | | | | | | | | | | | | |  |  | | | |
 | 6:45 | — | — | 6:45 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — |
 | — | 8:39 | — | — | 8:38 | — | — | 8:37 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — | — | 8:32 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 20 | 22 | 22 | 20 | 22 | 22 | 19 | 22 | 22 | 19 | 22 | 22 | 20 | 21 | 21 | 20 | 22 | 22 | 21 |
Feels °C | 22 | 21 | 20 | 21 | 21 | 19 | 21 | 21 | 18 | 21 | 21 | 17 | 20 | 20 | 18 | 19 | 19 | 18 | 22 | 22 | 19 |
Swell 1 Height (m) Direction Period (s) | 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 | WNW 9 | NW 9 | NW 8 | NW 9 | NW 8 | WNW 8 |
| kJ | 86 | 91 | 76 | 60 | 82 | 23 | 38 | 52 | 77 | 118 | 154 | 144 | 147 | 265 | 183 | 130 | 118 | 105 | 62 | 69 | 109 |
Swell 2 Height (m) Direction Period (s) | NNW 11 | NNW 10 | NNW 10 | S 12 | NW 11 | W 6 | NW 9 | WNW 11 | NNW 10 | NNW 10 | NNW 9 | NNW 10 | WNW 12 | — | — | — | — | — | WNW 8 | WNW 8 | S 18 |
| kJ | 47 | 39 | 63 | 3 | 5 | 11 | 21 | 23 | 58 | 51 | 47 | 33 | 96 | — | — | — | — | — | 20 | 12 | 6 |
Swell 3 Height (m) Direction Period (s) | N 7 | N 6 | W 12 | — | S 12 | NNW 10 | WNW 10 | NW 8 | — | — | — | — | NNW 10 | — | — | — | — | — | S 18 | SW 18 | — |
| kJ | 4 | 1 | 3 | — | 3 | 20 | 19 | 18 | — | — | — | — | 18 | — | — | — | — | — | 6 | 12 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WNW 7 | NNW 3 | NNW 4 | NW 6 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 7 | NNW 7 | NNW 6 | NNW 7 | NNW 7 | NNW 6 |
| kJ | — | — | — | 40 | 7 | 15 | 52 | 37 | 38 | 37 | 32 | 44 | 51 | 90 | 102 | 163 | 166 | 145 | 204 | 149 | 80 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 37 | 34 | 34 | 405 | 126 | 37 | 399 | 34 | 34 | 37 | 34 | 34 | 404 | 37 | 34 | 547 | 126 | 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.
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