Coxos Surf Break

Lat Long: 39.00° N 9.43° W

Coxos Surf Forecast and Surf Report

Issued: 6 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Coxos sea temperature is
20.1°C
0.4° 

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


Coxos surf forecast from 8 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 10AM (local time) - 4ft (1.2m), 13s period, NW swell with glassy winds.
  • Most powerful swell: Sunday 13 Sep, 7PM (local time) - 5.5ft (1.7m), 12s period, NW swell with 850 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 10AM (local time) - 4ft (1.2m), 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 1.2m and 13s period with a secondary swell of 1.2m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Coxos in the next 16 days are 1.7m 12s and forecast to arrive on Sunday (Sep 13) at 7PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sun 13th Sep)4ft (1.2m) 13s
Best Surf10AM (Sun 13th Sep)4ft (1.2m) 13s
Most Powerful 7PM (Sun 13th Sep)5.5ft (1.7m) 12s

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


The Lowdown

G’day, I’m Rusty. Let’s have a look at what’s on the cards for Coxos over the next couple of weeks.

Right now, there’s no surf to get excited about. We’ve got a rough start with north to north-northwest winds blowing in the 18 to 19 mph range, making it messy and choppy. The swell’s there – around 3ft to 6ft from the WNW to NNW – but the wind has it all torn up. The combined energy is moderate at best, hitting 404 to 848 (moderate wave energy), but it’s just poor conditions through the first week.

Things start to look up around Sunday, 13 September. That morning, the wind drops to glass with a nice 4ft swell from the NW and a long period of 13 seconds – this is a proper groundswell. Combined energy is strong at 695, and for an exposed reef setup like this, that long period will bring clean, well-shaped waves. The water temp is 68°, which is about average for this time of year. This is the standout of the window: glassy, good size, and that longer period means better shape and easier paddling between sets. Just keep in mind that a reef break at this level is for advanced surfers, and crowds are common here.

Monday, 14 September morning also shows potential with glassy conditions again and a 4ft NW swell at 11 seconds. It’s a touch smaller but still clean and with good energy (414 – moderate). Worth a paddle if you missed the Sunday session.

We then hit a quiet spell from Tuesday, 15 September through to Saturday, 19 September – lots of small, weak swell under 3ft, with most days in the poor range. Energy drops to as low as 91 (weak), and winds stay cross-onshore for the most part. Not worth racing out for.

Sunday, 20 September morning offers another hopeful window: glassy conditions, 4ft from the NNW at 9 seconds, combined energy of 401 (moderate). The score says good surf conditions, so it’s a solid, clean option if you can wait that long.

Then we fade again until the very tail end: Wednesday, 23 September morning shows a 3ft WNW swell at a very long 13 seconds, with clean cross-offshore wind from the SSW. Combined energy of 358 (moderate) and light winds – that’s a nice, sneaky late-run chance. The period is long, so it’ll peel better on the reef than a beach break.

Overall, the real standout is Sunday, 13 September morning – glassy, 4ft NW groundswell with that long 13-second period, and very strong energy. That’s the one to pencil in. Monday morning and the following Sunday morning are good secondary calls. The rest is mostly quiet or blown out.

Stay salty,
Rusty

Short Range Forecast

Mostly dry. Warm (max 20°C on Tue morning, min 17°C on Wed night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 30°C on Sun morning, min 18°C on Fri night). Winds decreasing (fresh winds from the N on Fri morning, calm by Sun morning).

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
2
1
1
3
2
3
2
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
WNW
10
1.2
NW
9
0.9
NW
9
1
NW
8
1.8
NNW
8
2
NNW
8
1.9
NNW
8
1.9
NNW
11
1.6
NNW
7
1.4
NNW
7
1.5
NNW
6
1.3
NNW
7
1.5
NNW
8
1.4
NNW
8
0.6
NW
15
1.2
NW
13
1.3
NW
12
1.3
NW
12
1.1
NW
11
1.3
NNW
11
1
NNW
10
Wave Graph
Metric surfscale
Energy kJ
302
241
126
132
392
471
400
837
220
163
160
144
277
226
176
488
537
520
331
359
194
Wind (km/h)
25
N
20
NNW
15
NNW
30
N
35
NNW
30
N
25
N
30
N
30
N
30
N
25
NNW
15
N
5
N
15
NNW
15
NNE
5
NE
15
W
5
N
5
N
10
WNW
10
N
Wind State
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
glassy
cross-on
cross-on
glassy
on
cross-on
High Tide
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
4:36AM2.94m
4:51PM3.04m
5:10AM2.86m
5:26PM2.85m
Low Tide
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
10:38AM0.08m
11:00PM0.11m
11:13AM0.19m
11:32PM0.29m
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:11
7:13
7:13
7:13
7:15
7:16
7:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:58
7:55
7:54
7:52
7:51
7:50
7:47
 mm
Temp °C
20
20
20
19
19
18
20
20
18
21
21
20
27
26
26
30
26
26
28
25
23
Feels °C
18
19
21
15
13
14
17
16
14
18
18
20
26
24
24
28
24
24
26
24
22
  • 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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