Bicas Surf Break

Lat Long: 38.45° N 9.21° W

Bicas Surf Forecast and Surf Report

Issued: 6 am 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Bicas sea temperature is
20.8°C
0.0° 

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


Bicas surf forecast from 10 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 1PM (local time) - 2.5ft (0.8m), 13s period, NW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 16 Sep, 10PM (local time) - 6ft (1.8m), 10s period, NW swell with 573 kJ wave energy.
  • Next surfable swell (1★+): Saturday 12 Sep, 4AM (local time) - 2ft (0.6m), 7s period with NW swell.

Best Forecast Surf Conditions for Bicas this week:

The surf forecast for Bicas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 12) at 4AM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.2m and 10s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Bicas in the next 16 days are 1.8m 10s and forecast to arrive on Wednesday (Sep 16) at 10PM. 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 3s period and expected on Monday (Sep 14) at 1PM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sat 12th Sep)2ft (0.6m) 7s
Best Surf 1PM (Sun 13th Sep)2.5ft (0.8m) 13s
Most Powerful10PM (Wed 16th Sep)6ft (1.8m) 10s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on offer for Bicas over the next couple of weeks. I’ll be straight with you – it’s a grim stretch for most of it, but there’s a light at the end of the tunnel if you’re patient.

Bicas is a reef break that’s rarely breaking, so we’re already up against it. The whole first week is a write-off. Thursday the 10th kicks off with poor surf conditions, a messy 4 ft NW swell with a short 8-second period, and a cross-on wind. It just gets worse from there. We’ve got a solid gap of nothing worthwhile until we hit the morning of Saturday the 12th. That morning offers a tiny 2 ft NW swell, but it’s glassy. The combined energy is weak at 79, and the waves are just ordinary. Not worth paddling out for.

The morning of Sunday the 13th sees a bit more energy, with a 1 ft NW swell but a long 13-second period pushing the combined energy to 153. The wind is light offshore from the SE, so it’s clean. Still, the size is tiny, and the break is rarely breaking to begin with. Monday the 14th morning is similar – glassy conditions on a 2 ft NW swell (155 energy) – but it’s still just surfable, not good.

The middle of the week gets bigger but uglier. Wednesday the 16th morning has a 5 ft NW swell, but it’s a lumpy, cross-onshore mess with a fresh breeze. The energy is up to 386, but the quality is poor. This trend continues into Thursday the 17th with a 5 ft NW swell, again poor conditions. Honestly, this stretch looks more interesting for kite surfing than paddle surfing.

Finally, we get a window. Friday morning the 18th is the standout for the first half of the outlook. The wind goes glassy, and we’ve got a 4 ft NW swell with a 10-second period, delivering 211 energy. The report says “expect good surf conditions,” and with that clean, glassy surface, this is your best bet for a proper session. It’s still a rarely-breaking reef, so don’t expect a circus, but if it’s on, it’ll be clean.

We then go back into a long, dry spell of poor conditions and tiny swell through the 19th, 20th, 21st, and 22nd. Nothing worth chasing.

The real prize, and I mean the one to circle on your calendar, is Friday the 25th of September. The morning shows a 4 ft NW swell with a very long 16-second period, cranking the combined energy up to 872 – that’s strong wave energy. The wind is calm, glassy. The forecast says “expect very good surf conditions.” This is a long-range call, so it’s promising but not locked in yet. The long period means it’ll be a proper groundswell, which for a reef break like Bicas is a beautiful thing. It’ll be a bit more powerful and the sets will have some space between them. The afternoon bumps up to 7 ft from the NW, but that’s a bit too big for the average punter, and the wind goes cross-on, making it choppy. The morning session is the one.

The water temp is sitting at 69°F, which is spot on average for this time of year.

So, to sum it up: don’t bother with anything until the 18th morning for a clean, small wave. The big one to watch is Friday the 25th morning – that’s the real standout. Be patient.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 29°C on Sat afternoon, min 18°C on Thu night). Winds decreasing (fresh winds from the NNW on Thu afternoon, calm by Sat night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 28°C on Sun afternoon, min 17°C on Tue night). Winds increasing (calm on Sun night, fresh winds from the NW by Tue afternoon).

Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
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
1
0
1
1
0
2
1
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
NW
8
1.2
NW
11
1
NW
6
0.4
NNW
10
0.6
NW
6
0.6
NW
6
0.6
NW
7
0.5
WNW
9
0.7
WNW
9
0.4
NW
13
0.8
NW
12
1
NW
11
0.7
NW
10
0.6
NW
11
0.5
NW
10
0.4
NW
10
1.1
NW
5
1.4
NW
7
1.4
NW
8
1.6
NW
9
1.6
NW
10
Wave Graph
Metric surfscale
Energy kJ
135
319
83
37
24
27
38
49
71
63
214
246
108
72
49
33
47
194
256
449
489
Wind (km/h)
10
N
35
NW
15
N
10
NE
20
WNW
5
N
0
NE
20
WNW
0
WSW
5
SE
20
W
5
W
5
SE
15
WNW
10
NNW
15
NNW
35
NW
30
NNW
30
NNW
40
NNW
20
N
Wind State
cross-on
on
cross-on
cross
on
glassy
glassy
on
glassy
off
cross-on
glassy
glassy
cross-on
on
on
on
cross-on
cross-on
on
cross-on
High Tide
2:55PM3.55m
3:20AM3.33m
3:34PM3.60m
3:56AM3.36m
4:11PM3.56m
4:31AM3.33m
4:47PM3.44m
5:05AM3.25m
5:21PM3.26m
5:38AM3.12m
5:56PM3.04m
6:13AM2.96m
6:33PM2.80m
Low Tide
9:13PM0.49m
9:21AM0.58m
9:49PM0.47m
9:57AM0.55m
10:23PM0.53m
10:32AM0.60m
10:55PM0.65m
11:07AM0.72m
11:27PM0.82m
11:42AM0.88m
11:58PM1.01m
12:18PM1.08m
00:32AM1.22m
clear
clear
clear
clear
clear
clear
clear
part cloud
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
7:13
7:15
7:16
7:16
7:16
7:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:52
7:50
7:49
7:46
7:45
7:44
 mm
Temp °C
24
25
20
22
26
24
25
29
27
27
28
28
25
28
27
27
26
20
23
24
19
Feels °C
21
19
16
20
23
21
24
25
26
26
25
27
25
24
24
23
21
17
19
17
14
  • 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 Bicas Surf forecast

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

Bicas is 9 km (6 miles) from Sesimbra. If you plan a holiday in Lisboa, look for hotels and other accommodation in Sesimbra. Sesimbra has rooms for a wide range of budgets as well as car hire and transport links.

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