Surf Forecasts:
Coxos surf forecast from 30 Aug 2026:
- Most powerful swell: Saturday 5 Sep, 7PM (local time) - 5.5ft (1.7m), 13s period, NW swell with 951 kJ wave energy.
Best Forecast Surf Conditions for Coxos this week:
The most powerful waves expected at Coxos in the next 16 days are 1.7m 13s and forecast to arrive on Saturday (Sep 05) at 7PM. 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 | 7PM (Sat 5th Sep) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the menu for Coxos over the next couple of weeks. Straight up, I gotta be honest with you – it’s a tough stretch. The wind just won’t play ball for most of it, and we’re looking at a lot of choppy, lumpy, cross-onshore conditions. There’s no real standout session where everything clicks perfectly, but there are a few windows where things might just become worthwhile if you're keen and patient.
We start off with a blank run. From Sunday the 30th of August right through to late on Saturday the 5th of September, every session is rated as poor. The wind is mostly a moderate to fresh cross-onshore, anywhere from 12 to 22 mph, messing up what could be decent swell. The swell hangs around 4 ft to 6 ft from the NW and NNW, with periods mostly between 7 and 10 seconds, but the wave energy is moderate. On Tuesday the 1st of September, it even pushes up to 6 ft from the NNW, but with that 19-22 mph cross-onshore wind, it’s just a messy, lumpy battlefield. Not worth paddling out for.
Now, things get a little more interesting on Saturday the 5th of September in the afternoon. We see a shift to an onshore wind at 12 mph and a clean-looking 4 ft NW swell, but the real kicker is that period – it jumps to a very long 13 seconds. The energy climbs to 978, which is solid. The problem? It’s only a *marginal* call due to questionable tide conditions. That long-period groundswell might offer some nice shaped lines, but at a reef like Coxos, the tide could make or break it.
Sunday morning the 6th of September holds a little more promise. It’s still marginal, but the wind drops right off to a slight air (3 mph) from the NNW, making it a light cross-onshore. The swell is a 5 ft NW swell with a solid 11-second period. The energy reads 423. It’s not going to be epic, but with that wind almost glassy, it might be the cleanest window of the whole run for a few sneaky ones. The water temp is about average for the time of year.
After that, we slip back into poor conditions from Monday the 7th into the middle of the second week. A lot of fresh cross-onshore wind again, with swell ranging from 3 ft to 8 ft. On Wednesday the 9th of September morning, things get serious size-wise: an 8 ft NNW swell with an 8-second period, but that fresh 19 mph N wind makes it a lumpy mess. The energy is a strong 1248. That’s too big for beginners, and with that wind, it’s only for the hardcore experts who don't mind getting blasted. Actually, with that setup – big swell, poor quality, and strong cross-onshore wind – this spot looks more interesting for kite surfing than paddle surfing.
Into the second week, from Thursday the 10th of September, the pattern continues: bumpy, cross-onshore wind, swell between 6 ft and 7 ft. The energy stays moderate to strong. By Sunday the 13th of September, things get marginal again with a 7 ft NNW swell and a moderate cross-onshore. Monday the 14th of September morning might be the last flicker of hope: a 4 ft NNW swell with a very long 12-second period, light onshore wind at 6 mph, and a solid 868 energy reading. It’s marginal, but if you time it right, that long-period groundswell might push some proper lines through.
Bottom line: there’s no day where I’d say “drop everything and go.” The best bet is probably that Sunday morning, 6th of September, for the cleanest conditions, or you gamble on the tide working out on Saturday the 5th and Monday the 14th. Stay tuned, sometimes forecasts change.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sun morning, min 17°C on Sun night). Winds increasing (light winds from the NNW on Sat night, fresh winds from the N by Mon afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Thu morning, min 17°C on Tue night). Winds decreasing (fresh winds from the N on Tue night, light winds from the N by Wed night). | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 8 | NW 9 | NW 9 | NW 9 | NW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NW 10 | NW 10 | NW 9 | NW 13 | NW 12 |
Wave Graph | |||||||||||||||||||||
219 | 383 | 203 | 183 | 384 | 772 | 565 | 562 | 464 | 280 | 167 | 140 | 144 | 160 | 129 | 132 | 137 | 322 | 198 | 412 | 625 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 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 | 9:37AM2.25m | 10:33PM2.12m | |||||||
Low Tide | 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 | 4:07PM0.85m | ||||||||
7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | |
— | 8:12 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:01 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 18 | 20 | 20 | 18 | 19 | 20 | 18 | 21 | 21 | 18 | 22 | 22 | 18 | 20 | 20 | 19 | 23 | 22 | 20 |
Feels °C | 20 | 19 | 15 | 16 | 16 | 14 | 14 | 16 | 14 | 20 | 19 | 17 | 21 | 21 | 17 | 18 | 17 | 17 | 22 | 21 | 20 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 9 | NW 9 | NW 9 | NW 10 | SW 16 | SSW 15 | SSW 15 | SSW 14 | NW 8 | NW 8 | NNW 7 | NNW 7 | SSW 14 | WNW 8 | NNW 7 | NW 10 | NW 10 | NW 9 | NW 13 | NW 12 |
219 | 383 | 203 | 183 | 384 | 10 | 23 | 22 | 21 | 57 | 53 | 140 | 144 | 20 | 26 | 132 | 137 | 322 | 198 | 412 | 625 | |
Swell 2 Height (m) Direction Period (s) | W 13 | — | W 12 | NW 11 | SW 17 | — | — | — | — | SSW 15 | SSW 16 | NW 8 | NW 9 | — | SW 14 | WNW 8 | SW 13 | NNW 7 | NNW 7 | WNW 9 | SW 12 |
4 | — | 11 | 64 | 11 | — | — | — | — | 23 | 24 | 9 | 13 | — | 8 | 23 | 7 | 65 | 89 | 141 | 6 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 11 | S 11 | — | — | — | — | — | — | SSW 15 | SSW 14 | — | NW 12 | NW 10 | — | SW 13 | NNW 16 | NNW 8 | — |
— | — | — | 9 | 2 | — | — | — | — | — | — | 22 | 20 | — | 6 | 39 | — | 7 | 162 | 104 | — | |
Wind waves Height (m) Direction Period (s) | — | — | NNW 5 | NNW 5 | NNW 5 | NNW 10 | NNW 9 | NNW 9 | NNW 8 | NNW 7 | NNW 7 | — | — | NNW 7 | NNW 7 | — | NNW 7 | NNW 7 | — | NW 9 | — |
— | — | 44 | 72 | 87 | 772 | 565 | 562 | 464 | 280 | 167 | — | — | 160 | 129 | — | 108 | 102 | — | 321 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 399 | 37 | 238 | 238 | 37 | 238 | 238 | 45 | 34 | 317 | 34 | 36 | 317 | 45 | 34 | 428 | 34 | 34 | 399 | 1 |
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.











