Coxos Surf Break

Lat Long: 39.00° N 9.43° W

Coxos Surf Forecast and Surf Report

Issued: 12 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Coxos sea temperature is
17.9°C
2.6° 

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, 4AM (local time) - 11ft (3.5m), 10s period, NNW swell with 2,269 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 0.7m 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 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 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 4AM (Thu 17th Sep)11ft (3.5m) 10s

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


The Lowdown

Gather 'round, it's Rusty. Took a good long look at the charts for our spot, and it's a real mixed bag. We've got some magic on the horizon, but we gotta wade through a whole lotta junk to get to it.

Right off the bat, the first few days are a write-off. Saturday the 12th is a non-starter—tiny, weak swell and cross-on wind. You're better off staying in bed. Sunday the 13th morning, though, we finally get a sniff of something. The swell drops a bit to 3 ft, but it's a long period groundswell (13 seconds) from the NW, which is what this reef loves. The combined wave energy is a solid 378 (moderate), and with that light cross-offshore breeze from the SSW, it’ll be clean. This is your first real look at Coxos, and it's a good one.

Monday morning the 14th is a real treat. Glassy conditions—literally zero wind—with a crisp 3 ft NW groundswell at 11 seconds. It's gonna be smooth as silk out there. Energy is 311 (moderate), and that's a crowd-pleaser. After that, things go downhill fast. From Tuesday the 15th through to Friday the 18th, it's a full-on northerly wind event. The swell jumps up, getting to a massive 12 ft by Wednesday the 16th, but the wind is howling at 45 km/h from the north. Energy hits 1680 (very strong) but it's a total mess—cross-on, choppy, lumpy. This is expert-only territory, and even then, it won't be pretty.

Now, here's the standouts you need to wait for. Saturday the 19th we get a big, long-period groundswell (14 seconds) at 7 ft from the NNW. Energy is blasting at 1487 (very strong). The wind is light, but it's a cross-shore, so it won't be perfect glass, but it'll be the best thing we've seen in days. However, the real gem is Monday the 21st. Morning session is where it's at. We've got a glassy 5 ft NW swell with an incredibly long period of 16 seconds. That's pure groundswell. The energy is 1279 (very strong). This is setup for long, walled-up lines wrapping perfectly over the reef at Coxos. It'll be working, but with that period, expect some patience between sets. If you can paddle out, it's the best wave of the whole forecast.

Tuesday the 22nd morning hangs in there with a 6 ft NW swell (13 seconds) and solid 1044 energy, but the wind is onshore, so it's not as clean. The following Wednesday the 23rd and Thursday the 24th both have glassy mornings again, with smaller but still fun 5 ft and 3 ft NW swells, respectively. The 24th has a 15-second period, which is lovely, but the size is down. After that, from Friday the 25th onward, it fades into small, weak, and windy conditions.

So, the best of the best: Sunday morning the 13th for the clean, fun combo, and Monday morning the 21st for the long-period groundswell glass-off. That 21st is the one that has you waking up early. The rest of the time, you're either waiting out the wind or taking what you can get.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Sun morning, min 19°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 22°C on Mon night, min 17°C on Tue night). Winds increasing (light winds from the N on Mon night, strong winds from the N by Tue night).

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
Rating
(10 max)
1
0
1
2
2
2
2
1
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
1.1
NNW
7
0.9
NNW
7
0.9
NW
13
1.3
NW
12
1.4
NW
12
1
NW
11
0.9
NW
11
0.7
NW
10
0.6
NNW
10
1.2
NNW
5
2.3
NNW
7
3.5
NNW
9
3.5
NNW
9
3
NNW
10
3
NNW
10
2.2
NNW
10
2
NNW
10
2.1
NNW
9
1.8
NNW
9
1.5
NW
14
Wave Graph
Metric surfscale
Energy kJ
115
111
97
290
520
542
242
169
102
63
63
531
1680
1755
1780
1662
869
732
718
525
902
Wind (km/h)
10
NNE
15
NNW
15
N
5
SSW
10
WNW
10
NNE
0
WNW
10
NNW
15
N
20
N
35
N
40
N
45
N
40
N
35
N
25
NNE
35
N
25
N
20
NNE
30
N
25
NNE
Wind State
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
4:01AM2.96m
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
clear
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>
7:15
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
26
26
25
28
26
26
27
25
22
21
20
18
19
20
19
22
21
18
23
22
19
Feels °C
24
24
23
26
24
24
25
24
21
20
16
13
13
14
13
16
16
13
18
17
15
  • 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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