Coxos Surf Break

Lat Long: 39.00° N 9.43° W

Coxos Surf Forecast and Surf Report

Issued: 12 am 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Coxos sea temperature is
18.8°C
1.7° 

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


Coxos surf forecast from 11 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 7AM (local time) - 2ft (0.6m), 14s period, NW swell with glassy winds.
  • Most powerful swell: Wednesday 16 Sep, 10AM (local time) - 10ft (3.0m), 9s period, NNW swell with 1,178 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 7AM (local time) - 2ft (0.6m), 14s 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 7AM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.7m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Coxos in the next 16 days are 3.0m 9s and forecast to arrive on Wednesday (Sep 16) at 10AM. 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 Sunday (Sep 13) at 10PM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Sun 13th Sep)2ft (0.6m) 14s
Best Surf 7AM (Sun 13th Sep)2ft (0.6m) 14s
Most Powerful10AM (Wed 16th Sep)10ft (3.0m) 9s

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


The Lowdown

G'day, Rusty here. Right, let’s have a proper look at what’s coming down the pipe for Coxos. This is a solid reef setup that loves a good NNW swell, and the next couple of weeks have a bit of everything – some quiet spells, a few proper sessions, and a whole lot of wind to dodge.

The opening weekend is a bit of a write-off, to be honest. Friday the 11th is a no-go with a messy 19 mph cross-onshore wind and a weak, short-period swell. Saturday the 12th isn't much better, still choppy and only marginal at best. You can sleep in.

Sunday the 13th morning is where it starts to get interesting. We’ve got clean, glassy conditions – that’s a major plus – with a 3 ft swell from the NW. The period jumps up to 13 seconds, which is proper groundswell energy, giving the waves some real shape and punch. The combined energy is moderate (378). It's not huge, but that glassy surface will make it feel a lot better than the size suggests. Perfect for a longboard or a funboard, and the crowds at Coxos can be a thing on a day like this, so get in early.

Monday the 14th morning keeps the clean vibe going with a light cross-offshore breeze. Swell drops a touch to 3 ft from the NW, still with a decent 11-second period and moderate energy (292). Clean waves on offer, another good session for the early crew.

Then we hit a rough patch. From Tuesday the 15th right through to Thursday the 17th, the wind swings onshore and gets nasty. Swell picks up a bit mid-week but it’s blown out, with cross-onshore winds gusting up to 25 mph. The water temp is sitting around average for the time of year, but you won't care because it'll be a washing machine out there.

Friday the 18th and Saturday the 19th are still average. The swell hangs around 6 ft to 7 ft from the NNW, but the period drops to 8-9 seconds and the wind stays onshore or cross-onshore. Choppy, messy – not worth paddling out for.

Now, here’s the standout. Sunday the 20th. This is the one to circle. Early morning sees a 7 ft NNW swell with a solid 9-second period, but the real winner is the glassy wind – dead calm. Combined energy is strong (737), and the swell direction is bang on the optimum. This is going to be firing and clean. Keep in mind, at over 7 ft, this is getting into the intermediate to advanced zone – not for beginners. The afternoon freshens up with a 12 mph cross-onshore, so make the most of the morning.

Monday the 21st is a big-wave day for experts only. Swell jumps to 8 ft from the NNW, with a 13-second period. That’s a ton of energy (2253) and size. A light cross-shore wind in the morning keeps it semi-rideable for the very skilled, but this is a serious reef at that size.

Tuesday the 22nd morning is another top pick. Clean 8 ft groundswell from the NNW, 11-second period, and a light cross-offshore breeze from the ENE. Combined energy is very strong (1570). This is excellent, powerful surf for experienced surfers. The swell direction is ideal for Coxos.

Wednesday the 23rd morning keeps the trend going: clean, 7 ft swell with a light offshore. Strong energy (1060). Another excellent day for the crew who know what they’re doing.

The last few days of the outlook (Thursday 24th to Saturday 26th) see the swell drop back down to a more manageable 5 ft to 6 ft, but the wind becomes more variable. Thursday morning is clean again with a 6 ft NW swell – a good chance for a smaller-wave session. Friday and Saturday get a bit choppier as the cross-onshore wind returns.

Overall, the clear standout for the whole period is Sunday the 20th morning – glassy conditions with a solid, powerful swell. For the big-wave charger, Tuesday the 22nd morning and Wednesday the 23rd morning are your windows for clean, heavy groundswell.

Keep an eye on the forecasts, because a long-range call like Sunday the 20th is promising but can shift. For now, sharpen your fins.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 28°C on Sun morning, min 17°C on Thu night). Winds decreasing (fresh winds from the NNW on Fri afternoon, calm by Sun morning).

Days 4-6 Weather Summary

Mostly dry. Warm (max 27°C on Mon morning, min 17°C on Tue night). Winds increasing (calm on Sun night, strong winds from the N by Tue night).

Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
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
2
0
1
2
2
2
2
1
0
0
0
0
0
0
0
2
0
1
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
10
1
NNW
6
1.1
NNW
6
1.2
NNW
7
1.1
NNW
7
1.1
NNW
8
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
2.2
NNW
7
3
NNW
9
2.5
NNW
9
2.5
NNW
9
2
NNW
9
2.3
NNW
10
2.3
NNW
9
Wave Graph
Metric surfscale
Energy kJ
137
69
85
153
115
128
290
465
478
237
172
102
63
49
446
1178
1083
1144
595
1004
884
Wind (km/h)
20
NNE
30
NNW
15
N
10
NNE
15
NW
15
NNE
5
S
10
WSW
10
NNE
5
SSW
15
WNW
15
N
20
N
35
NNW
40
N
40
N
35
N
30
N
15
N
25
NNW
20
N
Wind State
cross-on
cross-on
cross-on
cross-on
on
cross-on
glassy
cross-on
cross-on
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
3:38PM3.21m
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
Low Tide
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
11:48AM0.36m
00:04AM0.50m
12:25PM0.57m
00:38AM0.73m
1:07PM0.80m
1:19AM0.95m
clear
clear
clear
clear
clear
clear
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>
7:13
7:15
7:16
7:16
7:18
7:18
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:51
7:50
7:47
7:46
7:45
7:43
 mm
Temp °C
22
22
20
27
25
25
28
27
25
27
24
22
21
20
18
19
19
19
21
21
18
Feels °C
19
19
21
26
24
24
27
25
23
26
22
22
19
16
14
14
14
15
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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