Surf Forecasts:
Coxos surf forecast from 1 Sep 2026:
- Best quality surf: Sunday 6 Sep, 10AM (local time) - 3ft (0.9m), 12s period, NNW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 7AM (local time) - 7ft (2.2m), 10s period, NNW swell with 908 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 4AM (local time) - 2.5ft (0.8m), 9s period with WNW 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 05) at 4AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.1m and 12s. Another secondary swell of 0.8m and 5s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Coxos in the next 16 days are 2.2m 10s and forecast to arrive on Tuesday (Sep 08) at 7AM. 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 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 5th Sep) | 2.5ft (0.8m) 9s |
| Best Surf | 10AM (Sun 6th Sep) | 3ft (0.9m) 12s |
| Most Powerful | 7AM (Tue 8th Sep) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into it. We’ve got a 16-day window for Coxos, and honestly, it’s a rough start. The first week and a half is a write-off unless you’re just desperate for a paddle. The wind is relentless, coming in from the north and north-northwest, and it’s cross-onshore or onshore for days on end. The surf is there, but it’s lumpy, choppy, and just plain ugly. The real standout is a narrow window on the morning of Sunday the 13th of September. That’s where we’ll focus.
The first few days are a total bust. Tuesday the 1st sees some push from a NW swell (6 ft, 9 seconds) but the wind is a fresh 19 mph from the north, cross-onshore, and it’s just messy. The combined energy is moderate (481), but it doesn’t matter with that wind. This pattern holds through the whole first week – moderate to fresh breezes, cross-onshore, and the waves are either too small, too blown out, or both. You’ll get a bit of a lull in the wind on the morning of Saturday the 5th, with a clean cross-offshore breeze, but the swell is only 4 ft from the NW (9 seconds) and the energy is weak (187). It’s surfable, but ordinary.
The morning of Sunday the 6th actually looks *almost* good. The wind goes glassy, just a 3 mph breeze from the WNW, and the swell is a clean 3 ft from the NNW with a long 12-second period. The energy jumps to moderate (439). That’s a classic reef-swell setup, long period, good shape. But the wind shifts in the afternoon back to onshore, and it’s gone. It’s a one-hit wonder, and it’s not quite big enough to be a true standout.
Then we get another week of the same old story – wind, chop, and frustration. Swells pick up a bit, with 7 ft to 8 ft from the NNW on the 8th, 9th, and 10th, but the wind is a solid 16-22 mph cross-onshore. The energy is strong (907 on the 10th morning), but it’s a washing machine. Honestly, for a reef break, that setup is more interesting for kite surfing than paddle surfing. The period is also short to moderate (7-10 seconds), so it’s not going to be a classic long-period reef wave.
Now, here’s the one you’ve been waiting for. The morning of Sunday the 13th of September. This is it. The wind goes glassy – a 3 mph breeze from the southwest. The swell is a solid 7 ft from the NNW, with an 8-second period. The combined energy is strong (561). That’s a powerful, punchy swell for the reef. The glassy wind is the key – it’s going to be clean, no wind bumps, just the raw power of the reef. The 8-second period means it’s not a long, drawn-out groundswell, but it’ll be a consistent, well-shaped wave. The crowd profile at Coxos is “often,” so expect some company, but it’ll be worth it. The direction (NNW) is spot-on for the optimum swell direction for this spot. This is the standout. The water temperature is about average for the season.
The tail end of the forecast, from the 14th to the 16th, fades fast. Winds pick up again, and the swell drops right off. The 15th has a long-period (12-second) swell from the NW, but it’s only 3 ft and the wind is onshore, so it’s a no-go. The 16th is more of the same small, choppy junk.
So, to sum it up: the first 12 days are a nightmare of wind. Don’t even bother until the morning of the 13th. That Sunday morning session at Coxos is the only real shot at something special. Mark it on your calendar.
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Thu morning, min 17°C on Tue night). Winds decreasing (fresh winds from the NNW on Tue morning, light winds from the NNE by Wed night). | Days 4-6 Weather SummaryMostly dry. Warm (max 34°C on Sat morning, min 19°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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 9 | NNW 9 | NNW 9 | NNW 8 | NNW 7 | NNW 6 | NNW 7 | NNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | NW 9 | WNW 9 | WNW 9 | NNW 12 | NW 11 | NNW 11 | WNW 12 | WNW 12 | WNW 11 |
Wave Graph | |||||||||||||||||||||
481 | 440 | 449 | 226 | 163 | 87 | 105 | 79 | 64 | 59 | 45 | 101 | 176 | 101 | 90 | 243 | 288 | 242 | 371 | 518 | 433 | |
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 | cross-on | cross-off | cross-off | glassy | glassy | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 11:12AM2.31m | 00:04AM2.23m | 12:30PM2.52m | 1:11AM2.43m | ||||||||
Low Tide | 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 | 4:44AM0.93m | 5:46PM0.74m | 6:11AM0.79m | 6:58PM0.51m | ||||||||
7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | |
— | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 18 | 21 | 21 | 20 | 28 | 28 | 24 | 27 | 30 | 32 | 34 | 34 | 27 | 23 | 22 | 19 | 22 | 22 | 18 |
Feels °C | 16 | 16 | 15 | 20 | 19 | 19 | 26 | 25 | 22 | 25 | 27 | 30 | 31 | 32 | 28 | 23 | 22 | 19 | 21 | 21 | 17 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 14 | NW 8 | NW 8 | NW 7 | NNW 7 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | N 11 | NNW 5 | WNW 9 | NW 9 | NW 11 | NNW 11 | WNW 12 | WNW 12 | WNW 11 |
23 | 22 | 21 | 54 | 32 | 25 | 105 | 49 | 64 | 59 | 45 | 101 | 9 | 32 | 90 | 164 | 288 | 242 | 371 | 518 | 433 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SSW 15 | SSW 16 | SSW 15 | NW 9 | SSW 14 | SSW 14 | SW 13 | NW 10 | NNW 5 | SW 12 | WNW 9 | NW 10 | NNW 12 | WNW 9 | WNW 9 | NNW 10 | — | — |
— | — | — | 23 | 24 | 22 | 21 | 20 | 19 | 7 | 25 | 23 | 6 | 101 | 53 | 243 | 62 | 26 | 116 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SSW 15 | — | NW 10 | SSW 14 | — | — | NW 8 | SW 13 | SW 13 | N 9 | NNW 11 | NW 14 | SW 12 | SW 11 | NW 15 | WNW 8 | — | — |
— | — | — | 23 | — | 4 | 20 | — | — | 3 | 7 | 7 | 2 | 12 | 29 | 5 | 5 | 54 | 27 | — | — | |
Wind waves Height (m) Direction Period (s) | NW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 7 | NNW 6 | — | NNW 7 | NNW 6 | NNW 5 | N 4 | — | NW 9 | — | NW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 6 |
481 | 440 | 449 | 226 | 163 | 87 | — | 79 | 39 | 23 | 17 | — | 176 | — | 24 | 32 | 40 | 86 | 91 | 136 | 219 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 37 | 238 | 132 | 34 | 34 | 32 | 34 | 34 | 12 | 29 | 34 | 34 | 0 | 0 | 0 | 0 | 223 | 34 | 34 | 37 | 34 |
Best forecast wave conditions in Ericeira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











