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Surf Forecasts:
Coxos surf forecast from 12 Sep 2026:
- Best quality surf: Sunday 13 Sep, 10AM (local time) - 3ft (0.9m), 13s period, NW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 4AM (local time) - 8ft (2.5m), 15s period, NNW swell with 2,550 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 10AM (local time) - 3ft (0.9m), 13s period with NW 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 Sunday (Sep 13) at 10AM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.8m and 7s. 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 2.5m 15s and forecast to arrive on Saturday (Sep 19) at 4AM. 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 11s period and expected on Sunday (Sep 13) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 13th Sep) | 3ft (0.9m) 13s |
| Best Surf | 10AM (Sun 13th Sep) | 3ft (0.9m) 13s |
| Most Powerful | 4AM (Sat 19th Sep) | 8ft (2.5m) 15s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
Hey, Rusty here. Let's break down the next couple of weeks for the local lineup.
It's gonna be a slow burner to start. Don't bother rushing to the water just yet because we've got a flat stretch that's going to last for a few days. The first real action worth paddling for is still a week and a half away.
The water is sitting at 65°F, which is a solid 4°F colder than normal for this time of year. That's a real chill, so you'll want the thickest rubber you've got.
Your first chance for a wave comes on Sunday, September 13th. Coxos will have a clean 3ft groundswell from the NW with a long, juicy 13-second period. A light offshore breeze from the South will keep it glassy. The energy is moderate at 391. It won't be a big day, but the conditions will be right for a nice, clean session before the wind gets a bit funkier in the afternoon.
But if you can hold out, the real standout is Tuesday, September 22nd. That's the one. Coxos is looking at a pumping 8ft of long-period NW swell (13 seconds) and a clean offshore wind out of the SE. The energy meter is pinned at 2005. That is serious, powerful, groundswell. For a reef break like this, with that wind, it's going to be absolutely world-class. Just know that at that size, it's strictly for the experts.
The days leading up to it are a write-off. Wednesday the 16th and Thursday the 17th are a mess of strong cross-onshore winds and 6ft to 11ft of lumpy, choppy swell. That's kitesurfing conditions, not paddle surfing. Give it a hard pass.
After the big Tuesday, things settle again. Wednesday the 23rd morning has a clean, glassy 6ft swell, but the wind turns onshore by midday. It's a brief window, not a full day.
Bottom line? A long, dry spell, a small clean-up on Sunday the 13th, then a whole lot of trash before one single, epic day on Tuesday the 22nd. Don't waste your energy on anything else.
Keep the faith.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sun morning, min 19°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Tue morning, min 17°C on Tue night). Winds increasing (light winds from the NNW on Tue morning, strong winds from the N by Wed morning). | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 7 | NNW 7 | NNW 7 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 | NNW 10 | NNW 5 | NNW 8 | NNW 9 | NNW 9 | NNW 10 | NNW 9 | NNW 10 | NNW 9 | NNW 9 | NNW 8 | NNW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 115 | 111 | 97 | 290 | 465 | 486 | 242 | 169 | 102 | 63 | 59 | 756 | 1819 | 1819 | 2247 | 617 | 957 | 907 | 698 | 488 | 2400 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-off | cross-on | cross-on | glassy | 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 |
High Tide | 4:15PM3.17m | 4:36AM2.94m | 4:51PM3.04m | 5:10AM2.86m | 5:26PM2.85m | 5:44AM2.73m | 6:02PM2.62m | 6:18AM2.55m | 6:39PM2.37m | 6:56AM2.36m | 7:22PM2.13m | 7:44AM2.16m | 8:22PM1.92m | ||||||||
Low Tide | 10:02AM0.03m | 10:27PM-0.02m | 10:38AM0.08m | 11:00PM0.11m | 11:13AM0.19m | 11:32PM0.29m | 11:48AM0.36m | 00:04AM0.50m | 12:25PM0.57m | 00:38AM0.73m | 1:07PM0.80m | 1:19AM0.95m | 2:02PM1.01m | 2:18AM1.13m | |||||||
 | |  | | | | | | | | |  | | | | | | | | | | |
 | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — |
 | — | 7:51 | — | — | 7:50 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 24 | 28 | 26 | 25 | 28 | 25 | 22 | 20 | 20 | 18 | 18 | 19 | 19 | 20 | 20 | 18 | 20 | 20 | 18 |
Feels °C | 24 | 24 | 21 | 26 | 24 | 23 | 26 | 24 | 22 | 20 | 17 | 13 | 10 | 11 | 12 | 14 | 14 | 13 | 16 | 17 | 15 |
Swell 1 Height (m) Direction Period (s) | NNW 7 | NNW 7 | NNW 7 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 | NNW 10 | NW 11 | S 13 | — | — | WNW 12 | NNW 9 | S 12 | SW 16 | NNW 9 | NW 13 | NNW 15 |
| kJ | 115 | 111 | 97 | 290 | 465 | 486 | 242 | 169 | 102 | 63 | 33 | 3 | — | — | 218 | 617 | 3 | 10 | 698 | 87 | 2400 |
Swell 2 Height (m) Direction Period (s) | WNW 10 | WNW 9 | WNW 9 | NNW 7 | NNW 7 | S 11 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | S 13 | — | — | S 12 | NW 11 | S 16 | S 11 | NW 16 | NW 18 | SW 14 |
| kJ | 61 | 68 | 64 | 61 | 36 | 2 | 46 | 46 | 40 | 22 | 13 | 3 | — | — | 3 | 548 | 5 | 2 | 10 | 51 | 8 |
Swell 3 Height (m) Direction Period (s) | SW 13 | NW 12 | NW 15 | W 9 | S 12 | S 11 | NNW 7 | S 11 | S 11 | WNW 12 | S 10 | — | — | — | — | S 12 | — | — | SW 15 | SW 14 | — |
| kJ | 7 | 6 | 80 | 40 | 3 | 2 | 17 | 2 | 2 | 15 | 2 | — | — | — | — | 3 | — | — | 9 | 8 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNW 6 | NNW 4 | NNW 4 | NNW 5 | NNW 8 | NNW 9 | NNW 9 | NNW 10 | — | NNW 10 | NNW 9 | — | NNW 8 | NNW 8 |
| kJ | — | — | — | — | — | — | — | 12 | 7 | 9 | 59 | 756 | 1819 | 1819 | 2247 | — | 957 | 907 | — | 488 | 352 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 34 | 5 | 0 | 41 | 2 | 0 | 34 | 34 | 34 | 806 | 238 | 701 | 399 | 146 | 34 | 418 | 132 | 36 | 226 | 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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