Coxos Surf Break

Lat Long: 39.00° N 9.43° W

Coxos Surf Forecast and Surf Report

Issued: 6 pm 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Coxos sea temperature is
18.1°C
2.4° 

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


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: Thursday 17 Sep, 1AM (local time) - 11ft (3.5m), 10s period, NNW swell with 2,135 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 3.5m 10s and forecast to arrive on Thursday (Sep 17) at 1AM. 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 Monday (Sep 14) at 1AM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sun 13th Sep)3ft (0.9m) 13s
Best Surf10AM (Sun 13th Sep)3ft (0.9m) 13s
Most Powerful 1AM (Thu 17th Sep)11ft (3.5m) 10s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the cards for Coxos over the next couple of weeks. We’ve got a bit of a mixed bag, so don’t expect to rush straight out the door.

Right now, things are pretty flat. That first glimmer of something rideable doesn’t show up until Sunday the 13th of September. Before that, there’s nothing for you. It’s a few days of patience.

Sunday the 13th kicks off with a clean morning session. We’re looking at a 3 ft swell from the NW, but here’s the thing – that period is a long 13 seconds, making it proper groundswell. The wind is a light offshore from the south, so that reef at Coxos should be glassy and lined up. Water temp is sitting at 65°, which feels much colder than normal for this time of year – a solid 4° below average, so bring the thick rubber if you’ve got one. Combined energy is moderate at 391. A good start to the window.

The real standout, and I mean the one to circle on your calendar, is Monday the 21st of September. That morning, Coxos is going to be firing. We’ve got a 7 ft swell from the NW with a period of 13 seconds – again that long-period groundswell, which this reef will handle beautifully. The energy jumps right up to a strong 2032. And the wind? A light offshore from the SSE, keeping it squeaky clean. This is excellent surf for experienced surfers. The size is over 5 ft, so it’s a step up from beginner territory, but for anyone who knows what they’re doing, this is the session to aim for.

Tuesday the 22nd morning is another gem. A clean 6 ft NW swell, glassy conditions with no wind at all, and energy at 1034. That’s a solid, fun wave for the confident crew.

Now, the week in between has some waves but the wind plays havoc. Thursday the 17th and Friday the 18th see a big jump in size – 7 ft to 10 ft – but the cross-onshore wind is nasty. It’s messy and lumpy, not worth the paddle out. The 10 ft stuff on Wednesday the 16th is accompanied by a strong breeze and the energy is a whopping 1586, but it’s just a washing machine. That’s more of a kiter’s window than a surfer’s.

After that Monday the 21st highlight, the swell starts to drop. By Thursday the 24th, it’s fading fast, and from Friday the 25th onwards, we’re looking at small, weak, and choppy leftovers. The final weekend of the month is flat and messy – not worth wetting a suit.

So, to sum it up: don’t bother until Sunday the 13th for a small but clean start, and hold out for Monday the 21st – that’s your best shot at something special. Crowds are often at Coxos, so expect company on that standout day.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Sun morning, min 19°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 22°C on Fri morning, min 17°C on Tue night). Mainly strong winds.

Sat
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
2
2
1
2
2
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)
1.1
NNW
7
0.9
NNW
7
0.9
NW
13
1.3
NW
12
1.3
NW
12
1
NW
11
0.9
NW
11
0.7
NW
10
0.6
NNW
10
1.1
NNW
5
2.5
NNW
8
3
NNW
9
3
NNW
9
3.5
NNW
10
2.1
NW
10
2.5
NNW
9
2.5
NNW
9
2.4
NNW
9
2.1
NNW
8
1.7
NW
15
Wave Graph
Metric surfscale
Energy kJ
111
97
290
465
486
242
169
102
63
52
667
1586
1586
2135
971
1048
1083
858
602
1289
Wind (km/h)
15
NW
15
NNE
5
S
10
WNW
10
NNE
5
N
10
NW
15
N
15
NNW
30
NNW
45
N
40
N
40
NNW
40
N
30
N
40
N
35
N
25
N
30
NNW
20
NNE
Wind State
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
10:27PM-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
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:16
7:16
7:18
7:18
7:20
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:51
7:50
7:47
7:46
7:45
7:43
7:42
 mm
Temp °C
25
24
27
26
25
27
24
21
20
20
18
18
19
19
21
20
18
22
22
19
Feels °C
24
22
25
25
24
25
23
21
19
17
14
11
13
13
16
14
12
18
18
16
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  • 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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