
Surf Forecasts:
Coxos surf forecast from 6 Sep 2026:
- Best quality surf: Saturday 12 Sep, 10AM (local time) - 4ft (1.2m), 8s period, NNW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 10AM (local time) - 5.5ft (1.7m), 12s period, WNW swell with 880 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 10AM (local time) - 4ft (1.2m), 8s period with NNW swell.
Best Forecast Surf Conditions for Coxos this week:
The surf forecast for Coxos over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 12) at 10AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.4m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Coxos in the next 16 days are 1.7m 12s and forecast to arrive on Monday (Sep 07) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 12th Sep) | 4ft (1.2m) 8s |
| Best Surf | 10AM (Sat 12th Sep) | 4ft (1.2m) 8s |
| Most Powerful | 10AM (Mon 7th Sep) | 5.5ft (1.7m) 12s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what this 16-day stretch has got cookin' for us. We're lookin' at a pretty lean run, so keep your expectations in check.
First up, we got Coxos. That's our main man in this region. This place is an advanced reef break, pretty consistent, and the swell direction we wanna see is from the NNW. The water temp is hangin' around 68°, pretty average for this time of year, so no surprises there.
Now, for the first week and a half, it's a real grind. We've got swell almost every day, but the onshore winds just won't give us a break. It's mostly cross-on from the north, and it gets up there, from 15 mph to a messy 28 mph. You're lookin' at choppy, lumpy, and downright nasty conditions. The wave energy goes up and down, sometimes gettin' into moderate range with values like 335 to 1001, but it's all for nothin' with that wind. That Monday the 7th has some energy (1001), but it's blown out. Don't bother.
Then, a little flicker of hope. On Saturday the 12th of September, we get a morning with glassy conditions. The wind is a light ESE at 3 mph, dead calm. The swell is 4 ft from the NNW with an 8-second period. Energy is low at 186. The conditions are glassy, but the waves are just "surfable" – pretty ordinary, but at least it's not a washing machine. It's only a small window before the wind swings around in the arvo. Could be a fun little session for a patient surfer on a longboard.
After that, we go into another dry spell. Sunday the 13th has a little bit of energy (395-474) with a nice 13-second period from the NW, but the winds are iffy, and the swell is small, 2 ft to 3 ft. It's a tease. Then from the 14th to the 19th of September, it's back to the same story – fresh to strong onshore winds ruining everything.
The only real standout that's worth gettin' excited about, but it's a long way out, is Monday the 21st of September. We've got a clean cross-offshore breeze from the ENE at 9 mph, and the swell is 4 ft to 5 ft from the NW with an 11-second period. The energy is moderate at 494-520. The forecast says "expect good surf conditions." That's our best bet. For a break like Coxos, SE offshore wind is what we really want, but cross-off is still a major win for cleanliness. This one's promising, but it's 15 days out, so we keep a loose wrist on that call. It could be a gem.
To wrap it up: most of this period is a write-off for paddle surfing. The constant northerly winds will have the kitesurfers stoked, as that setup and swell energy looks way more interesting for them. The only windows are a glassy but ordinary morning on the 12th, and a possible clean day on the 21st. Hold tight.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sun morning, min 17°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 17°C on Wed night). Winds decreasing (fresh winds from the N on Wed afternoon, light winds from the NNE by Fri night). | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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) | NNW 12 | NW 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 9 | NW 9 | NW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 11 | NNW 10 | NNW 8 | NNW 7 | NNW 7 | NNW 8 | NNW 7 | NNW 7 |
Wave Graph | |||||||||||||||||||||
464 | 347 | 660 | 880 | 713 | 444 | 302 | 194 | 148 | 322 | 337 | 493 | 402 | 759 | 512 | 257 | 163 | 93 | 151 | 111 | 97 | |
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 | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | cross-on |
High Tide | 11:12AM2.31m | 00:04AM2.23m | 12:30PM2.52m | 1:11AM2.43m | 1:28PM2.77m | 2:02AM2.63m | 2:16PM3.00m | 2:45AM2.80m | 2:59PM3.15m | 3:25AM2.92m | 3:38PM3.21m | 4:01AM2.96m | 4:15PM3.17m | ||||||||
Low Tide | 5:46PM0.74m | 6:11AM0.79m | 6:58PM0.51m | 7:13AM0.57m | 7:52PM0.27m | 8:03AM0.35m | 8:37PM0.08m | 8:45AM0.17m | 9:16PM-0.04m | 9:25AM0.07m | 9:53PM-0.07m | 10:02AM0.03m | 10:27PM-0.02m | ||||||||
7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | |
— | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — | — | 7:51 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 19 | 22 | 21 | 19 | 20 | 20 | 20 | 19 | 19 | 18 | 21 | 21 | 18 | 27 | 26 | 21 | 25 | 23 | 21 |
Feels °C | 20 | 20 | 17 | 20 | 19 | 18 | 17 | 18 | 20 | 14 | 13 | 13 | 18 | 18 | 15 | 23 | 22 | 19 | 24 | 21 | 20 |
Swell 1 Height (m) Direction Period (s) | NNW 12 | NW 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 9 | NW 9 | NW 14 | NNW 14 | NNW 12 | NNW 8 | WNW 7 | NNW 10 | NNW 8 | NNW 7 | N 10 | NNW 8 | NNW 7 | NNW 7 |
464 | 347 | 660 | 880 | 713 | 444 | 302 | 194 | 148 | 7 | 20 | 115 | 402 | 11 | 512 | 257 | 163 | 16 | 151 | 111 | 97 | |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 9 | NNW 10 | NNW 10 | — | NNW 9 | — | — | — | N 16 | NW 12 | NW 10 | NNW 11 | — | W 7 | W 7 | N 10 | W 8 | WNW 10 | WNW 9 | WNW 9 |
94 | 64 | 182 | 81 | — | 15 | — | — | — | 5 | 6 | 25 | 225 | — | 9 | 4 | 8 | 5 | 31 | 47 | 45 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | WNW 18 | WNW 9 | — | — | — | — | — | — | — | — | — | — | — | W 10 | W 9 | W 7 | WNW 10 | W 7 | W 7 | NW 11 |
5 | 61 | 65 | — | — | — | — | — | — | — | — | — | — | — | 2 | 6 | 4 | 11 | 4 | 1 | 29 | |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 4 | N 5 | NW 8 | NNW 8 | NNW 8 | — | NNW 11 | — | — | — | NNW 7 | — | — | — |
6 | 16 | 32 | 40 | 45 | 29 | 33 | 16 | 4 | 322 | 337 | 493 | — | 759 | — | — | — | 93 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 399 | 34 | 34 | 222 | 34 | 34 | 389 | 132 | 263 | 382 | 126 | 36 | 225 | 36 | 1 | 209 | 37 | 0 | 221 | 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.










