Coxos Surf Break

Lat Long: 39.00° N 9.43° W

Coxos Surf Forecast and Surf Report

Issued: 12 am 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Coxos sea temperature is
20.0°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 31 Aug 2026:

  • Most powerful swell: Tuesday 1 Sep, 1AM (local time) - 6.5ft (2.0m), 10s period, NNW swell with 772 kJ wave energy.

Best Forecast Surf Conditions for Coxos this week:

The most powerful waves expected at Coxos in the next 16 days are 2.0m 10s and forecast to arrive on Tuesday (Sep 01) 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 0.6m 4s period and expected on Sunday (Sep 06) at 1PM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1AM (Tue 1st Sep)6.5ft (2.0m) 10s

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


The Lowdown

G’day, Rusty here, checkin’ in with a look at what’s on the cards for Coxos. I’ll be straight with you – we’ve got a long, frustrating wait ahead. The next two weeks are full of northerly cross-onshore winds lumpin’ things up, and with swell energy mostly in the moderate range, but the quality is just not there for a decent paddle. The first decent window doesn’t open up until Monday the 14th of September, so that’s a solid 12 days with no real goin’.

We start off on Monday the 31st of August with a weak NW windswell at 4 ft, a measly 9-second period, and a fresh N wind hammerin’ it cross-onshore. This same story repeats day after day – Tuesday the 1st of September actually bumps up to 6 ft from the NNW with that same 19 mph N wind, but it’s still just lumpy junk. Wednesday the 2nd through to Sunday the 7th is more of the same: small, choppy surf, cross-onshore winds. Water temp is about average for the time of year, so nothin’ to write home about.

The whole first week is a write-off. Even when we get a touch more period, like Saturday the 5th with a 3 ft NW swell at 9 secs, or Sunday the 6th with a 4 ft NNW groundswell runnin’ at 12 seconds and pretty strong energy, the wind is still cross-onshore and kills any hope of shape. That long-period swell on Monday the 7th of September – 4 ft from the WNW at 14 seconds – is actually the best swell we’ll see, but the N wind is still on it, cross-onshore, so it’s a case of good energy wasted. Coxos is a reef that would love that WNW direction and that long-period groundswell, but not with that wind.

Tuesday the 8th and Wednesday the 9th are more cruddy, and then we finally get some interest on Monday the 14th of September. That morning we get an offshore wind from the SE at 12 mph, cleanin’ up a 5 ft NW swell. That’s our standout moment. The wind turns the corner, it’s offshore, the reef should be workin’ with that direction, and it’s a solid chest-to-head-high wave for the experienced crew. This is the one to aim for. The afternoon holds a 4 ft WNW groundswell at 11 seconds with a clean cross-off breeze, and that’s worth a look too, though it’s a touch cleaner in the morning. Keep in mind this long-range call is promising but less certain, so keep your eye on it.

Tuesday the 15th of September has a similar 5 ft NNW swell with a cross-off wind from the SSE, but that fresh breeze is blowin’ 22 mph, which is gonna be gnarly. For beginners, the swell never really gets too big – it mostly sits under 5 ft except that one 6 ft on the 1st – so it’s manageable size-wise, but the conditions are just not there for learnin’. The one proper window on the 14th, with offshore winds is where you want to be. There’s nothin’ worth chasin’ before that.

Alright, I’ve said my piece. Keep your hopes on that Monday the 14th. There’s light at the end of the tunnel, but you’ll be waitin’ for it.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Wed afternoon, min 17°C on Sun night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 29°C on Sat afternoon, min 18°C on Wed night). Wind will be generally light.

Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
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
0
0
0
0
1
1
2
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
NW
9
1.3
NW
10
2
NNW
10
1.9
NNW
9
1.8
NNW
9
1.7
NNW
9
1.5
NNW
7
1.3
NNW
7
1.1
NNW
7
1.1
NNW
7
0.9
NNW
7
0.6
WNW
9
0.9
NNW
6
0.8
WNW
10
0.9
NW
9
0.9
NW
9
0.9
NNW
7
1.3
NNW
13
1.3
NNW
12
1.3
NNW
11
1
NNW
11
Wave Graph
Metric surfscale
Energy kJ
208
348
772
578
523
439
218
163
108
108
82
53
55
122
120
128
79
581
472
379
234
Wind (km/h)
30
N
30
N
30
N
30
N
30
N
30
N
25
N
25
NNW
15
N
10
N
20
N
20
N
20
N
25
NNW
20
NNE
15
N
15
NW
15
N
15
NNE
25
N
20
N
Wind State
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
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
High Tide
5:10AM2.82m
5:24PM2.94m
5:46AM2.76m
6:02PM2.80m
6:25AM2.66m
6:46PM2.61m
7:12AM2.51m
7:40PM2.39m
8:13AM2.35m
8:55PM2.19m
9:37AM2.25m
10:33PM2.12m
11:12AM2.31m
00:04AM2.23m
Low Tide
11:11AM0.19m
11:35PM0.18m
11:48AM0.28m
00:12AM0.31m
12:31PM0.42m
00:55AM0.50m
1:22PM0.60m
1:49AM0.71m
2:31PM0.77m
3:05AM0.89m
4:07PM0.85m
4:44AM0.93m
5:46PM0.74m
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:03
7:05
7:05
7:07
7:07
7:09
7:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:09
8:08
8:07
8:06
8:04
8:01
8:00
 mm
Temp °C
19
20
18
20
20
18
20
21
18
22
23
19
22
22
20
25
29
26
31
31
23
Feels °C
15
16
14
16
16
14
18
19
17
21
21
18
20
20
18
22
26
23
27
27
21
  • Map Icons:
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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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