Coxos Surf Break

Lat Long: 39.00° N 9.43° W

Coxos Surf Forecast and Surf Report

Issued: 6 pm 15 Sep 2026 (local time)

Forecast update in  hr  min

Today's Coxos sea temperature is
18.5°C
2.0° 

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


Coxos surf forecast from 15 Sep 2026:

  • Best quality surf: Saturday 19 Sep, 10AM (local time) - 8ft (2.5m), 14s period, NNW swell with cross-offshore winds.
  • Most powerful swell: Saturday 19 Sep, 1AM (local time) - 8ft (2.5m), 15s period, NNW swell with 3,030 kJ wave energy.
  • Next surfable swell (1★+): Saturday 19 Sep, 10AM (local time) - 8ft (2.5m), 14s period with NNW 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 Saturday (Sep 19) at 10AM. The primary swell is predicted to be 2.5m and 14s period. 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 2.5m 15s and forecast to arrive on Saturday (Sep 19) 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 0.2m 2s period and expected on Monday (Sep 21) at 7AM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sat 19th Sep)8ft (2.5m) 14s
Best Surf10AM (Sat 19th Sep)8ft (2.5m) 14s
Most Powerful 1AM (Sat 19th Sep)8ft (2.5m) 15s

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


The Lowdown

Alright, let’s get into it.

The next couple of days are going to be a bit of a write-off, to be honest. We’ve got some swell, but the wind is just howling out of the north, blowing straight across the break at Coxos. It’s going to be lumpy, messy, and just plain ugly out there. You’d be fighting a losing battle. We’re looking at swell heights around 4ft on Tuesday afternoon, bumping up to 10ft by Wednesday, but with that strong, cross-onshore wind, it’s just going to be a washing machine. The combined energy will be up there, reaching 1586, but it’s all for nothing with that wind. Expect poor conditions right through Thursday and Friday. There will be some size, but it’s going to be sectiony and blown out. It's a good time to do some maintenance on your boards, honestly.

Then, we get a proper shift. Saturday the 19th is the standout of this whole period. That morning, the wind swings around to the east-northeast, light, and it’s cross-offshore. This is the kind of forecast that gets the heart pumping. The swell drops a bit to 8ft, but it’s cleaning right up. That’s a solid, powerful swell with a long 14-second period, and the energy jumps to 2378. This is a proper groundswell, and Coxos is a reef, so it’s going to handle it beautifully. The water is also a bit colder than usual for this time of year, about 4°F colder, so you’ll want the boots and the hood. This is for experienced surfers only – at 8ft, it’s got some push to it. It’s going to be a big, clean day.

Sunday morning still looks excellent. We’ve got a light offshore from the southeast, with chest to head-high waves at 6ft and a 12-second period. The energy is down a bit to 835, but it’s still going to be super clean and fun. This is a great chance to get back out after the swell peaks. The afternoon does turn a bit onshore from the northwest, so get your sessions in early.

The start of next week sees a drop in size. Monday morning with an east cross-offshore wind looks clean with 4ft waves, but the energy is dropping. Tuesday the 22nd might be your best bet if you want the glassiest conditions. It’s dead calm in the morning with a glassy 4ft, but it is small. Then we have another pulse of long-period stuff coming in on Wednesday the 23rd. That morning is glassy again, with 5ft of swell and a very long 14-second period. The energy is back up to 896. This is looking really promising, but it’s a week away, so keep an eye on it. The long period means it might break a bit better on the reef, and the sets will be well-spaced, giving you time to get out the back.

The rest of that week and the next weekend we have cleaner but smaller surf. Mornings will be the time to go, with light winds and some clean, albeit smaller, waves. Nothing with the punch of those main events, but there will be a few waves to be had. The last day of the month, the 30th, is another write-off with strong northerly winds and poor conditions, but there might be a few clean days before then. The 28th has glassy conditions in the morning with 5ft swell, so that's worth a look. Just be ready for the crowds on those clean days. It’s a fine reef, so it doesn’t take a lot to get good, but it’s likely to be popular.

Rusty out.

Short Range Forecast

Mostly dry. Warm (max 21°C on Thu morning, min 17°C on Tue night). Winds decreasing (strong winds from the N on Tue night, moderate winds from the NNE by Wed night).

Days 5-7 Weather Summary

Mostly dry. Warm (max 31°C on Mon morning, min 18°C on Fri night). Winds decreasing (fresh winds from the N on Fri afternoon, calm by Mon morning).

Tue
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
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
4
4
3
3
2
2
3
1
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
5
2.1
NNW
7
3
NNW
9
3
NNW
9
3.5
NNW
10
2.4
NNW
9
2.5
NNW
9
2.5
NNW
9
2.5
NNW
9
2
NNW
8
2.5
NNW
15
2.5
NNW
14
2.1
NNW
13
1.8
NNW
13
1.7
NNW
12
1.7
NNW
11
1.4
NW
11
1.2
NW
10
1.4
NW
12
1.3
NW
11
Wave Graph
Metric surfscale
Energy kJ
64
413
1586
1494
2179
948
1048
1159
885
475
3030
2378
1543
1049
835
739
458
292
580
403
Wind (km/h)
30
NNW
45
N
40
N
45
N
35
N
25
NNE
35
N
35
N
25
N
30
N
20
N
10
ENE
10
NW
15
N
10
SE
15
NW
15
ENE
15
E
20
NW
20
NNE
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-off
on
cross-on
off
on
cross-off
cross-off
on
cross
High Tide
6:02PM2.62m
6:18AM2.55m
6:39PM2.37m
6:56AM2.36m
7:22PM2.13m
7:44AM2.16m
8:22PM1.92m
8:58AM2.00m
10:00PM1.81m
10:42AM1.99m
11:40PM1.88m
12:03PM2.12m
00:41AM2.05m
Low Tide
00:04AM0.50m
12:25PM0.57m
00:38AM0.73m
1:07PM0.80m
1:19AM0.95m
2:02PM1.01m
2:18AM1.13m
3:32PM1.14m
4:00AM1.22m
5:23PM1.11m
5:40AM1.12m
6:33PM0.94m
clear
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>
7:18
7:20
7:20
7:22
7:22
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:46
7:45
7:43
7:42
7:39
7:38
7:37
 mm
Temp °C
19
18
18
19
19
21
20
18
21
21
20
26
23
24
28
27
28
31
29
26
Feels °C
16
13
11
12
13
16
14
13
17
17
18
23
21
22
27
25
25
29
24
22
  • 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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