Coxos Surf Break

Lat Long: 39.00° N 9.43° W

Coxos Surf Forecast and Surf Report

Issued: 12 am 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Coxos sea temperature is
19.7° C
0.9° 

Coxos surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Coxos surf forecast from 19 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 10AM (local time) - 3ft (0.9m), 7s period, NNW swell with cross-offshore winds.
  • Most powerful swell: Friday 21 Aug, 1PM (local time) - 7ft (2.2m), 10s period, NNW swell with 1,020 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 10AM (local time) - 3ft (0.9m), 7s 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 Wednesday (Aug 19) at 10AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.3m and 8s. 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 2.2m 10s and forecast to arrive on Friday (Aug 21) at 1PM. 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 Thursday (Aug 20) at 10PM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Wed 19th Aug)3ft (0.9m) 7s
Best Surf10AM (Wed 19th Aug)3ft (0.9m) 7s
Most Powerful 1PM (Fri 21st Aug)7ft (2.2m) 10s

Table - best surf conditions forecast for Coxos over the next 16 days.


The Lowdown

Gday, Rusty here. Let’s cut through the data and talk about what’s actually gonna be worth your time over the next couple of weeks. For the most part, this is a story about a solid, exposed reef break that’s going to get a whole lot of swell, but the wind is going to be the main villain in this piece. We’re looking at a frustrating run where the ocean’s got plenty of push, but the surface is going to be a mess for most of it.

The first real window we get is tomorrow morning, the 19th of August. It’s not big, with waves around `3 ft` from the NNW, but the wind is light and cross-offshore, which is a huge deal. The water’s running about average for this time of year. It’s going to be clean, and that’s a rare commodity right now. It’s the best of the early days, but it’s not the standout.

The real standout is way down the line, on the last day of the run, Thursday the 3rd of September. Between now and then, it’s a grim picture. From the 20th through the 25th, we see a mix of onshore winds and growing but messy swell. The energy is moderate, with values in the high hundreds breaking the thousand mark, but the wind is straight onshore or cross-onshore, and it’s just going to be lumpy and poor. There’s a stretch from the 21st to the 23rd where the swell is solidly in the `6 ft` to `8 ft` range, but it’s blown out. This setup is more interesting for the kite crew than for paddle surfing, to be honest.

The 26th and 27th, the swell stays around `5 ft`, but the wind remains messy, and the 27th afternoon pumps up with a strong `1280` combined energy and a long-period swell down from the NW at `11` seconds. The wind is cross-onshore and fresh, so it’s still no good.

Then, we have the big swell event. The 31st of August and the 1st of September see the energy spike hard, with values up to `2312`. The swell heights are up there—`7 ft` on the 31st, and `10 ft` by Tuesday afternoon. This is serious, expert-only territory, with a long-period groundswell that will be breaking straight and mean. The wind is fresh and cross-onshore the whole time, so it’s a total washout. Not a wave you want to be on.

Now, for the one to really circle. By the 2nd of September, the swell backs off a bit to `6 ft`, and the wind starts to ease. The morning is still cross-onshore, but the energy is dropping. But then comes Thursday the 3rd of September. We’ve got a `6 ft` swell from the NNW, which is right in the optimum window for Coxos. The wind is a light cross-on from the west at `5 km/h`, which is almost nothing, and the period is a clean `9` seconds. The energy is at `440` – moderate – but it’s the *quality* that counts. This is the cleanest, most organized swell we’ll have seen all window. It’s going to be glassy and lined up on that reef. I’d call this the one to go for. It’s a promising call, but it’s a week and a half out, so take it with a grain of salt.

So, the long and short of it is: if you’re desperate for a paddle, tomorrow morning will be clean but small. If you want the goods, you wait for that Thursday the 3rd of September session. It’s a long wait, but it might just be worth it.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 23°C on Wed morning, min 18°C on Thu night). Winds increasing (calm on Wed night, fresh winds from the NNW by Fri afternoon).

Days 4-6 Weather Summary

Mostly dry. Warm (max 21°C on Sun morning, min 18°C on Fri night). Mainly fresh winds.

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
NNW
7
0.9
NNW
7
0.5
WNW
9
0.6
WNW
9
0.6
WNW
9
1.7
NNW
7
2
NNW
8
2.2
NNW
10
2.3
NNW
8
2.4
NNW
8
2
NNW
9
2.3
NNW
8
2.4
NNW
9
2.2
NNW
9
2.3
NNW
8
2.1
NNW
8
1.6
NNW
7
1.2
NNW
7
0.9
NNW
7
0.8
NNW
7
0.7
NW
6
Wave Graph
Metric surfscale
Energy kJ
94
68
50
62
61
310
447
961
607
801
637
705
887
725
731
592
280
124
79
51
43
Wind (km/h)
10
SSW
15
W
5
NW
5
NW
30
NNW
30
NNW
35
N
35
NNW
30
NNW
30
NNW
30
NNW
30
NW
20
NW
30
NW
30
NNW
25
NW
20
NW
15
N
15
N
15
NW
10
NW
Wind State
cross-off
cross-on
glassy
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
cross-on
cross-on
on
on
High Tide
7:44AM2.32m
8:08PM2.18m
8:37AM2.15m
9:12PM1.98m
9:50AM2.03m
10:42PM1.88m
11:22AM2.03m
00:11AM1.94m
12:36PM2.16m
1:11AM2.08m
1:28PM2.34m
1:54AM2.25m
2:08PM2.54m
2:30AM2.42m
Low Tide
1:50PM0.80m
2:12AM0.91m
2:50PM1.00m
3:15AM1.09m
4:18PM1.11m
4:48AM1.16m
5:56PM1.07m
6:14AM1.07m
7:03PM0.92m
7:12AM0.91m
7:48PM0.74m
7:53AM0.72m
8:24PM0.55m
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:54
6:54
6:56
6:56
6:58
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:28
8:25
8:24
8:22
8:22
8:21
8:19
 mm
Temp °C
23
22
20
22
21
19
19
20
18
20
20
19
21
20
19
20
21
19
20
20
19
Feels °C
23
22
21
21
19
14
14
15
13
16
16
15
18
16
15
17
19
17
19
19
18
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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