Carcavelos Surf Break

Lat Long: 38.68° N 9.33° W

Carcavelos Surf Forecast and Surf Report

Issued: 12 pm 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Carcavelos sea temperature is
20.2° C
0.5° 

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


Carcavelos surf forecast from 17 Aug 2026:

  • Best quality surf: Friday 21 Aug, 7AM (local time) - 7ft (2.1m), 8s period, NW swell with cross-offshore winds.
  • Most powerful swell: Friday 21 Aug, 7PM (local time) - 6.5ft (2.0m), 10s period, NNW swell with 747 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 1AM (local time) - 4ft (1.2m), 8s period with NNW swell.

Best Forecast Surf Conditions for Carcavelos this week:

The surf forecast for Carcavelos over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 1AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.3m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Carcavelos in the next 16 days are 2.0m 10s and forecast to arrive on Friday (Aug 21) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Friday (Aug 21) at 1AM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Wed 19th Aug)4ft (1.2m) 8s
Best Surf 7AM (Fri 21st Aug)7ft (2.1m) 8s
Most Powerful 7PM (Fri 21st Aug)6.5ft (2.0m) 10s

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


The Lowdown

Alright, grab a coffee and listen up. Rusty here, and I’ve been staring at the charts for the next couple of weeks. For Carcavelos, it’s a bit of a mixed bag, honestly. The water is sitting at 68°, which is pretty much bang on average for this time of year, so no surprises there.

The next few days are a write-off. We’ve got a bit of a lull setting in. From Monday morning right through to Wednesday afternoon, the swell is small and the wind is all wrong – onshore or cross-onshore, making for messy, choppy conditions. Not worth paddling out for. Thursday morning is a tease, with a tiny 2 ft swell from the WNW and clean conditions, but it's just too small to get excited about. Then Thursday afternoon the wind jumps up to 19 mph, so scrap that idea.

We’ve got a gap of poor conditions until things start looking up on Friday, the 21st of August. The morning kicks off with a solid 7 ft NW swell. The wind is clean, cross-off from the NNW, but look, that’s getting big for a beginner spot like Carcavelos. It’s going to be a powerful one, with combined energy hitting 688 (moderate energy). The wave period is only 8 seconds, so it’s short-period wind swell, meaning it’ll be a bit lumpy and less consistent. This one is definitely for the more experienced crew.

Saturday the 22nd brings a drop in size to 6 ft, still from the NNW, but the wind is up to 16 mph in the afternoon, creating a bit of a cross-chop. Not great.

Then we hit a decent run from Sunday, the 23rd of August, through Tuesday, the 25th. Sunday morning is a standout – 5 ft swell from the NNW, light 6 mph cross-off wind, and the forecast is calling for good surf conditions. The combined energy is 370 (moderate), and the period is 8 seconds. It’s not perfect, but it’s the cleanest we’ll see for a while. Monday the 24th morning is also clean with 6 ft, but the wind is a bit stronger at 12 mph. Tuesday the 25th morning is another good one, with 5 ft and a light NNE breeze.

Now, hold onto your board. The real standout is shaping up for Saturday, the 29th of August. We’re looking at a proper overhead swell. Saturday morning has 8 ft from the NW, light N wind, and energy readings are through the roof at 2260 – that’s strong wave energy. The afternoon is even bigger, with 10 ft from the NW and a 14-second period, energy hitting 3892. This is a long-period groundswell, and it’s going to be way too big for Carcavelos for most people. Sunday the 30th is still massive, with 8 ft and 7 ft swells, and the combined energy remains very high (1281 and 1449). This is all expert territory, and the long period will make it a bit shifty on the beach break. It’s promising, but it’s a long way out, so keep an eye on it.

So, to wrap it up: the best bet for the average surfer is Sunday morning, the 23rd of August, for the cleanest conditions. For the big-wave chargers, mark your calendar for Saturday, the 29th of August, but be ready for some serious power.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Mon night. Warm (max 27°C on Mon morning, min 20°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Thu morning, min 18°C on Fri night). Winds increasing (calm on Thu morning, fresh winds from the NNW by Fri afternoon).

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
1
0
0
1
0
0
1
1
0
0
!
!
2
1
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)
1.7
NNW
8
1.5
NNW
8
1.3
NNW
8
1.4
NNW
8
1.4
NNW
8
1.2
NNW
8
0.9
NNW
7
0.9
NNW
7
0.5
WNW
10
0.5
WNW
9
0.6
WNW
9
1
NW
9
2.1
NNW
8
2.1
NNW
8
1.8
NNW
10
1.4
NNW
10
1.3
NNW
9
1.1
NW
9
1.6
W
8
1.4
WSW
7
1.7
NW
8
Wave Graph
Metric surfscale
Energy kJ
344
284
202
243
250
163
97
74
51
45
61
162
545
514
590
378
312
182
282
197
400
Wind (km/h)
5
ESE
15
W
5
WNW
10
S
15
SW
5
WSW
10
S
10
SW
5
NW
5
WSW
15
WNW
30
NNW
30
NNW
30
NNW
20
NNW
15
WNW
20
SW
20
NW
25
WNW
25
NW
20
NW
Wind State
cross-off
cross-on
cross
cross-on
on
glassy
cross-on
on
glassy
glassy
cross-on
cross-off
cross-off
cross-off
cross-off
cross
on
cross
cross
cross
cross
High Tide
6:31PM2.62m
6:52AM2.42m
7:12PM2.36m
7:35AM2.24m
7:59PM2.11m
8:27AM2.07m
9:03PM1.91m
9:42AM1.96m
10:34PM1.82m
11:14AM1.96m
00:03AM1.88m
12:28PM2.09m
1:03AM2.02m
Low Tide
12:13PM0.36m
00:38AM0.45m
12:54PM0.57m
1:16AM0.67m
1:40PM0.78m
2:01AM0.89m
2:39PM0.97m
3:04AM1.06m
4:08PM1.07m
4:38AM1.12m
5:47PM1.03m
6:06AM1.04m
6:54PM0.89m
part cloud
clear
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:54
6:54
6:56
6:56
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:29
8:28
8:27
8:24
8:23
8:22
8:21
 mm
1
Temp °C
27
26
23
23
23
22
23
24
22
23
23
20
21
21
18
21
22
21
21
21
20
Feels °C
28
26
25
23
22
23
22
25
25
24
22
17
17
16
15
19
20
19
18
17
18
  • 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 Carcavelos Surf forecast

The above surf forecast table for Carcavelos provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Carcavelos can be found by selecting the local surf guide option on the grey menu. Our Carcavelos 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 (Carcavelos) 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 Carcavelos 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.

Carcavelos is 1 km (1 miles) from Carcavelos. If you plan a holiday in Lisboa, look for hotels and other accommodation in Carcavelos. Carcavelos has rooms for a wide range of budgets as well as car hire and transport links.

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