Bicas Surf Break

Lat Long: 38.45° N 9.21° W

Bicas Surf Forecast and Surf Report

Issued: 12 am 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Bicas sea temperature is
19.8°C
0.9° 

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


Bicas surf forecast from 29 Aug 2026:

  • Best quality surf: Thursday 3 Sep, 10AM (local time) - 2.5ft (0.8m), 7s period, NW swell with glassy winds.
  • Most powerful swell: Monday 31 Aug, 7PM (local time) - 4.5ft (1.3m), 10s period, NW swell with 341 kJ wave energy.
  • Next surfable swell (1★+): Thursday 3 Sep, 10AM (local time) - 2.5ft (0.8m), 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 Thursday (Sep 03) at 10AM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.2m and 14s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Bicas in the next 16 days are 1.3m 10s and forecast to arrive on Monday (Aug 31) at 7PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Thu 3rd Sep)2.5ft (0.8m) 7s
Best Surf10AM (Thu 3rd Sep)2.5ft (0.8m) 7s
Most Powerful 7PM (Mon 31st Aug)4.5ft (1.3m) 10s

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


The Lowdown

Alright, Rusty here. Let's have a look at what we've got on the cards.

To be straight with you, it’s a pretty grim run ahead. The only spot we’ve got any info on is Bicas, and it’s a tricky one at the best of times. This reef break *rarely breaks*, so you know we’re already up against it, and the next 16 days don’t offer much hope for a decent session. The first week and a half is basically a write-off. From Saturday the 29th of August all the way through, we’re staring down the barrel of poor surf conditions with scores that don’t even register. The winds are mostly onshore or cross-onshore from the north or northwest, and it’s making a mess of that small, weak swell. We’re talking combined wave energy in the low hundreds (199 to 310), which is weak-to-moderate at best, and with short period swell (8-9 seconds), the shape is going to be second-rate.

There’s a small glimmer on Thursday the 3rd of September. The morning turns glassy with a light northerly, and the swell drops to 3 ft from the northwest. It’s got a short, choppy period of 7 seconds, and the energy is tiny (84), so you’re looking at feeble, weak waves. It’s *surfable* but nothing to get excited about. Then Friday the 4th and Saturday the 5th see similar tiny swells (1 ft to 2 ft) and glassy mornings, but the waves are just too small and weak to offer any real quality.

The true standout, and I mean the only one worth circling on your calendar, is Sunday the 13th of September. We finally get a pulse of proper swell. The morning shows 7 ft from the west, with a period of 11 seconds. That’s a solid groundswell, and the combined energy is a mighty 1193 – that’s strong, powerful stuff. Now, here’s the kicker: this is a 7 ft wave, so it’s no longer for the beginners; it’s getting into expert territory at Bicas. The wind is a cross-onshore from the north at 12 mph, making it choppy, but the forecast is *marginal* which means it could clean up, or the tide might mess it up. Because Bicas (Portugal) is a reef break and this is a long-period swell (11 seconds and over), it might actually line up well on the reef and give some proper, hollow walls. But don’t get too hyped for the week before – it’s mostly choppy, onshore garbage, and this one spot is a long-range promise that could change.

Stay patient, and keep your eyes peeled closer to the day.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 25°C on Sun afternoon, min 18°C on Fri night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 28°C on Wed afternoon, min 18°C on Mon night). Winds decreasing (fresh winds from the NNW on Tue afternoon, calm by Thu morning).

Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
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
1
0
1
1
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)
1.2
NW
9
1.1
NW
9
0.9
NW
8
0.9
NW
8
1.2
NW
9
0.8
NW
9
1.1
NW
9
1.3
NW
10
1.3
NW
10
1.1
NW
9
1.3
NW
9
1.3
NW
9
0.9
NW
8
1
NW
8
1
NW
7
0.8
NW
7
0.8
NW
7
0.8
NW
7
0.4
WNW
9
0.6
WNW
9
0.7
NW
8
Wave Graph
Metric surfscale
Energy kJ
235
197
112
95
251
99
203
299
303
211
260
249
109
111
104
64
77
55
30
54
69
Wind (km/h)
15
N
30
NW
20
NNW
15
NNW
35
NW
20
NNW
20
N
30
NNW
20
N
20
NNW
35
NNW
20
N
20
N
30
NW
15
N
5
N
20
WNW
5
NNW
0
SW
20
WNW
15
NNW
Wind State
cross-on
on
cross-on
on
on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
glassy
on
glassy
glassy
on
on
High Tide
4:11PM3.44m
4:30AM3.25m
4:44PM3.43m
5:03AM3.24m
5:19PM3.37m
5:38AM3.18m
5:57PM3.24m
6:19AM3.08m
6:41PM3.05m
7:06AM2.94m
7:36PM2.83m
8:08AM2.79m
8:52PM2.63m
Low Tide
9:56AM0.69m
10:21PM0.63m
10:28AM0.66m
10:53PM0.63m
11:02AM0.69m
11:27PM0.70m
11:40AM0.77m
00:04AM0.82m
12:22PM0.90m
00:48AM1.00m
1:14PM1.08m
1:43AM1.20m
2:25PM1.25m
2:59AM1.37m
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:03
7:03
7:05
7:05
7:07
7:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:12
8:09
8:08
8:07
8:06
8:04
8:02
 mm
Temp °C
22
22
20
24
25
20
24
25
19
23
23
19
26
28
22
24
28
27
23
26
24
Feels °C
20
18
18
21
20
17
20
20
16
18
17
15
23
23
18
23
25
25
24
24
23
  • 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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