
Surf Forecasts:
Coxos surf forecast from 7 Sep 2026:
- Best quality surf: Sunday 13 Sep, 10AM (local time) - 4.5ft (1.3m), 13s period, NW swell with glassy winds.
- Most powerful swell: Sunday 13 Sep, 10PM (local time) - 5ft (1.6m), 14s period, NW swell with 911 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 7AM (local time) - 3.5ft (1.1m), 6s 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 7AM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.4m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Coxos in the next 16 days are 1.6m 14s and forecast to arrive on Sunday (Sep 13) at 10PM. 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+) | 7AM (Sat 12th Sep) | 3.5ft (1.1m) 6s |
| Best Surf | 10AM (Sun 13th Sep) | 4.5ft (1.3m) 13s |
| Most Powerful | 10PM (Sun 13th Sep) | 5ft (1.6m) 14s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright folks, ol’ Rusty here with a look at what’s comin’ down the line for Coxos. It’s a rocky start, but don’t write it off just yet – there’s some real promise if you’re patient.
Right now, a solid NW swell is in the water, but the wind is a real pain. We’re stuck with a moderate to fresh cross-onshore breeze, and the surf is just a mess of chop and lump. The water temp is sittin’ around 68°F which is pretty much normal for this time of year, so no surprises there. The combined energy is moderate at 488, but it’s just not lining up. This sets the tone for the next week or so; it’s gonna be a frustrating grind.
Through the 6th to the 10th of September, we’ve got a persistent NW to NNW swell, but that wind just won’t quit. It’s cross-on shore from the north, and it’s ruining what could be decent waves. The swell keeps building, hitting 7 ft on the 9th with a combined energy up to 749, but it’s all for nothing when the wind is honking at 16 to 22 mph. The period is short and choppy, and every session is a write-off. This is a long stretch of poor conditions.
We finally get a little break in the weather on the morning of Saturday the 12th. The wind drops to a glassy 3 mph from the ENE and the swell is a small 4 ft from the NNW. It’s tiny, but glassy. The combined energy is weak (159), so it’s not a standout, but it’s a surfable wave after a long drought. The afternoon turns back to onshore wind, so grab that early window if you’re desperate.
Now, Sunday the 13th of September is the one to circle. The morning brings glassy conditions again with a slight air, and a building swell of 4 ft from the NW. But look at that period – 13 seconds – that’s proper groundswell. The combined energy jumps to 751, which is a solid moderate to strong pulse. The wind is offshore for that morning session, which means clean, peeling lines. Coxos is a reef, so it’ll handle that long-period swell beautifully. The afternoon is a bit more mixed with a light cross-on, but the morning is where the magic is. Expect a few others out there, as it can get crowded.
The following week is a bit of a mixed bag. The swell drops off for a few days, but keep an eye on Thursday the 18th of September. The morning is glassy again, with a clean 6 ft swell from the NNW. The combined energy is a healthy 561, and with that offshore wind, it’s going to be clean and fun. It’s not as strong as the 13th, but it’s a solid runner-up. The swell gets a bit bigger on the 19th, but the wind picks up and spoils it.
The tail end of the outlook on Monday the 21st of September offers a clean-offshore session with a 4 ft NW swell. It’s a smaller, cleaner option to finish the run.
Best on offer? Hands down, Sunday morning, the 13th of September. That 4 ft, 13-second NW groundswell with glassy, offshore wind is the standout. The reef at Coxos will turn it into clean, long walls. The 18th of September is a close second for a clean, slightly bigger session.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sun afternoon, min 17°C on Mon night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 30°C on Sat morning, min 17°C on Wed night). Winds decreasing (fresh winds from the N on Wed afternoon, calm by Sat morning). | |||||||||||||||||||
Sun 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 9 | NW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 11 | NNW 10 | NNW 8 | NNW 8 | NNW 6 | NNW 7 | NNW 7 | NW 15 |
Wave Graph | ||||||||||||||||||||
347 | 660 | 880 | 713 | 444 | 302 | 194 | 148 | 362 | 471 | 564 | 512 | 822 | 586 | 303 | 250 | 113 | 99 | 102 | 174 | |
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 | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | on | cross-on |
High Tide | 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 | |||||||
— | — | 7:11 | — | — | 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 | 18 | 22 | 22 | 19 | 20 | 20 | 20 | 19 | 19 | 18 | 22 | 21 | 18 | 25 | 24 | 25 | 30 | 27 | 27 |
Feels °C | 20 | 16 | 20 | 20 | 17 | 17 | 18 | 21 | 14 | 14 | 13 | 18 | 16 | 15 | 22 | 21 | 22 | 27 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | NW 11 | WNW 14 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 9 | NW 9 | N 14 | NW 12 | NNW 12 | NNW 8 | W 7 | NNW 10 | NNW 8 | N 10 | N 10 | NNW 7 | WNW 9 | NW 15 |
347 | 660 | 880 | 713 | 444 | 302 | 194 | 148 | 4 | 6 | 85 | 512 | 9 | 586 | 303 | 8 | 16 | 99 | 49 | 174 | |
Swell 2 Height (m) Direction Period (s) | WNW 9 | NNW 10 | NNW 10 | — | NNW 9 | — | — | — | — | N 15 | NW 10 | NNW 11 | — | W 10 | W 7 | W 7 | WNW 10 | WNW 10 | NNW 16 | WNW 9 |
64 | 182 | 81 | — | 15 | — | — | — | — | 4 | 26 | 225 | — | 2 | 4 | 4 | 10 | 54 | 26 | 46 | |
Swell 3 Height (m) Direction Period (s) | WNW 18 | WNW 9 | — | — | — | — | — | — | — | — | W 13 | W 8 | — | — | W 9 | W 8 | W 8 | N 9 | NW 12 | NW 11 |
61 | 65 | — | — | — | — | — | — | — | — | 3 | 12 | — | — | 2 | 1 | 5 | 6 | 6 | 30 | |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 5 | NNW 5 | NNW 4 | NNW 5 | NNW 5 | NNW 4 | — | NNW 7 | NNW 8 | NNW 8 | — | NNW 11 | — | — | NNW 8 | NNW 6 | — | NNW 7 | NNW 8 |
16 | 39 | 38 | 43 | 28 | 36 | 18 | — | 362 | 471 | 564 | — | 822 | — | — | 250 | 113 | — | 102 | 147 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 399 | 34 | 34 | 389 | 34 | 34 | 37 | 132 | 263 | 387 | 132 | 36 | 223 | 36 | 1 | 223 | 32 | 0 | 132 | 32 |
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.










