
Surf Forecasts:
Coxos surf forecast from 10 Aug 2026:
- Best quality surf: Sunday 16 Aug, 4AM (local time) - 6ft (1.9m), 8s period, NNW swell with glassy winds.
- Most powerful swell: Sunday 16 Aug, 7AM (local time) - 6.5ft (2.0m), 9s period, NNW swell with 603 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 4AM (local time) - 6ft (1.9m), 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 Sunday (Aug 16) at 4AM. The primary swell is predicted to be 1.9m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Coxos in the next 16 days are 2.0m 9s and forecast to arrive on Sunday (Aug 16) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 14s period and expected on Monday (Aug 17) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 16th Aug) | 6ft (1.9m) 8s |
| Best Surf | 4AM (Sun 16th Aug) | 6ft (1.9m) 8s |
| Most Powerful | 7AM (Sun 16th Aug) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Coxos over the next 16 days.
The Lowdown
G’day, I’m Rusty, and I’ve been staring at charts for this stretch for a while now. Let me tell you, the next 16 days are a real mixed bag for Coxos (reef). There’s some serious potential hiding in the second week, but you’ll have to be patient and pick your moments.
The first week is honestly a write-off for quality waves. We’re looking at a long stretch of poor surf conditions from the start through to Friday, 14 August. The swell is small and weak – combined energy values in the low hundreds (95 to 345) – with cross-onshore winds and choppy, lumpy conditions. The water temperature is sitting at 21°C, which is about normal for this time of year, nothing to get excited about. There’s a gap of several days with no recommendations, and it’s a real slog.
Things start to show a pulse Saturday, 15 August, but it’s still marginal. The swell picks up a little into the 5 ft range from the NNW, but the wind is still cross-onshore or onshore, so it’s messy and questionable. The energy is climbing into the mid-400s (454 to 474), but it’s not clean enough to get excited about.
Then we get to the standout. Sunday, 16 August, is where it’s at. The morning is an absolute beauty – clear skies, a light offshore breeze from the southeast at 10 km/h, and a 7 ft NNW swell with a 9-second period. That’s going to be clean, lined up, and holding plenty of energy (603). This is the best on offer, no question. Coxos is an exposed reef, and with that swell direction bang on the optimum (NNW), it’s going to be firing. This is for advanced surfers only – 7 ft is a solid step up, and the reef can be unforgiving. The afternoon freshens up from the southwest, so lock in the morning session.
But wait, there’s more. Monday, 17 August, morning also looks promising – clear skies, a light cross-offshore breeze from the south at 10 km/h, and a 6 ft NNW swell, also with good energy (551). That’s another clean, quality session, but the wind is just a touch more side-shore. Still, a solid option.
Tuesday, 18 August, morning is interesting. The wind goes glassy – a 5 km/h breeze from the north-northeast – and the swell is 5 ft from the NNW. That’s a clean, glassy morning with moderate energy (336). It’s a good, calmer session for those who want to avoid the bigger days.
After that, we get a bit of a lull again, with small, messy swells and cross-winds through the middle of the week. The energy drops back into the low 100s. Then, looking further out, Friday, 21 August, has a bit of a pulse – 7 ft from the NNW, but with cross-shore winds and only marginal conditions. The energy is strong (525), but it’s not as clean.
Now, for the long-range standout. Tuesday, 25 August, morning is one to circle on the calendar. It’s glassy, with a light southerly breeze, and a 3 ft WNW swell with a very long, juicy 15-second period. That’s a groundswell, and it’s going to have serious shape and power for its size. The energy is surprisingly high (554) for the height. This is a classy little session, but that long period can make it break a bit straight at some spots – on a reef like Coxos, it should be a treat. The afternoon gets messy again, with a bigger 8 ft NNW swell and cross-onshore wind, but that’s a different beast.
So, bottom line: the best surf is on Sunday, 16 August, morning – clear skies, clean 7 ft NNW swell, light offshore. That’s your standout. Monday, 17 August, morning, and Tuesday, 25 August, morning, are also excellent calls. Be patient through the first week of poor conditions, and you’ll be rewarded.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon morning, min 19°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 22°C on Thu morning, min 19°C on Thu night). Winds decreasing (fresh winds from the N on Fri night, calm by Sat night). | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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 8 | NW 7 | NW 12 | NNW 12 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NNW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 |
Wave Graph | |||||||||||||||||||||
60 | 82 | 25 | 47 | 53 | 77 | 120 | 154 | 150 | 154 | 194 | 175 | 215 | 178 | 191 | 280 | 432 | 390 | 603 | 463 | 415 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | 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 | cross-on | on | cross-on | off | cross | glassy |
High Tide | 1:37PM2.74m | 2:11AM2.63m | 2:30PM2.98m | 3:01AM2.79m | 3:17PM3.16m | 3:45AM2.89m | 4:01PM3.26m | 4:27AM2.93m | 4:42PM3.25m | 5:07AM2.90m | 5:22PM3.14m | 5:45AM2.80m | 6:01PM2.95m | ||||||||
Low Tide | 7:59PM0.31m | 8:14AM0.36m | 8:50PM0.09m | 9:01AM0.19m | 9:36PM-0.05m | 9:45AM0.08m | 10:18PM-0.10m | 10:26AM0.04m | 10:58PM-0.07m | 11:05AM0.09m | 11:36PM0.05m | 11:44AM0.20m | 00:12AM0.24m | ||||||||
6:45 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | |
— | 8:38 | — | — | 8:37 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — | — | 8:32 | — | — | 8:31 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 22 | 22 | 20 | 22 | 22 | 20 | 22 | 22 | 20 | 22 | 22 | 20 | 22 | 22 | 21 | 22 | 22 | 20 | 25 | 24 | 22 |
Feels °C | 21 | 21 | 19 | 21 | 21 | 19 | 21 | 21 | 19 | 21 | 20 | 18 | 20 | 20 | 18 | 23 | 22 | 19 | 25 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 8 | NW 7 | NW 12 | NNW 12 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | NW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 |
60 | 82 | 23 | 38 | 53 | 77 | 120 | 154 | 150 | 154 | 194 | 175 | 130 | 141 | 145 | 280 | 432 | 390 | 603 | 463 | 415 | |
Swell 2 Height (m) Direction Period (s) | WNW 7 | NW 11 | W 6 | NW 9 | WNW 11 | NNW 10 | NNW 10 | NNW 9 | NNW 10 | NNW 10 | N 9 | — | — | — | — | NW 9 | NW 9 | S 18 | SW 16 | SW 16 | SW 15 |
35 | 5 | 6 | 21 | 23 | 58 | 51 | 32 | 33 | 18 | 14 | — | — | — | — | 152 | 29 | 6 | 10 | 11 | 8 | |
Swell 3 Height (m) Direction Period (s) | S 12 | S 12 | NNW 10 | WNW 10 | NNW 8 | — | — | — | — | NW 12 | — | — | — | — | — | WNW 8 | WNW 8 | — | — | — | — |
3 | 3 | 20 | 19 | 14 | — | — | — | — | 23 | — | — | — | — | — | 22 | 13 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NNW 3 | NNW 4 | NNW 5 | NNW 6 | NNW 5 | NNW 5 | NNW 6 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 7 | NNW 7 | NNW 7 | — | — | — | — | — | — |
— | 4 | 25 | 47 | 39 | 62 | 40 | 47 | 46 | 51 | 94 | 109 | 215 | 178 | 191 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 37 | 126 | 126 | 547 | 34 | 34 | 37 | 34 | 34 | 433 | 126 | 126 | 473 | 126 | 34 | 225 | 1 | 0 | 41 | 0 |
Best forecast wave conditions in Ericeira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











