Bicas Surf Forecast

/ Lisboa (31 surf breaks) /

Portugal (226 surf breaks)

Surf Forecasts:

Bicas surfForecast / Lisboa / Portugal

12 Day Weather and Surf, issued 6 am Monday 15 Sep 2025 WEST

Forecast update in hr min s Forecast update imminent

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

Today's Bicas sea temperature is 18.0° C
(Which is 2.7°C colder than average for this time of year)

Best Forecast Surf Conditions for Bicas this week:

The surf forecast for Bicas over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 1AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.1m and 15s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Bicas in the next 12 days are 3.0m 13s and forecast to arrive on Monday (Sep 15) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave Type	Time (WEST) & Date	Wave Height & Period
Next good surf (1 star+)	1AM (Thu 18th Sep)	3ft (0.9m) 10s
Best Surf	7AM (Thu 18th Sep)	2.5ft (0.8m) 9s
Most Powerful	10PM (Mon 15th Sep)	10ft (3.0m) 13s

Table - best surf conditions forecast for Bicas over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Mostly dry. Warm (max 28°C on Wed afternoon, min 16°C on Mon night). Winds decreasing (fresh winds from the NNW on Mon afternoon, calm by Wed night).									Days 3-6 Weather Summary Some drizzle, heaviest during Fri morning. Warm (max 27°C on Thu night, min 16°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the NNW by Sat afternoon).
	Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
	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	3	0	1	1	0	1	2	0	2	2	0	0	1	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	NW	NW	NNW
Period(s) (?)	11	11	13	13	12	12	11	10	10	13	12	11	11	10	10	9	9	8	13	7	8
Wave Graph (?)
kJ (?)	449	595	1286	1112	864	583	375	260	160	172	371	291	281	250	132	84	86	59	87	152	135
Wind (km/h)	N	NNW	N	N	NW	N	NNE	WNW	E	NNE	W	NE	SE	WNW	WSW	NNW	NW	N	N	NNW	N
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	on	cross- on	cross- on	on	cross- on	cross	on	cross- off	glass	cross- on	cross- off	glass	cross- on	cross- on	glass	on	cross- on	cross- on	on	cross- on
High Tide / height (m)			10:31PM 2.52	11:04AM 2.73		12:03AM 2.61	12:22PM 2.88		1:07AM 2.77		1:19PM 3.07	1:53AM 2.94		2:04PM 3.24	2:31AM 3.07		2:42PM 3.35	3:04AM 3.16		3:15PM 3.40	3:34AM 3.21
Low Tide / height (m)		4:07PM 1.31		4:41AM 1.47	5:47PM 1.22		6:09AM 1.35	6:56PM 1.04		7:09AM 1.17		7:45PM 0.87	7:54AM 0.99		8:25PM 0.75	8:31AM 0.84		8:59PM 0.68	9:04AM 0.75		9:29PM 0.65

	Monday 15			Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
Sunrise	7:16	-	-	7:18	-	-	7:18	-	-	7:20	-	-	7:20	-	-	7:22	-	-	7:22	-	-
Sunset	-	7:45	-	-	7:44	-	-	7:42	-	-	7:40	-	-	7:38	-	-	7:37	-	-	7:36	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	1	-	-	-	-	-	-	-	-
Temp. °C	26	25	18	22	26	23	25	28	27	26	26	27	26	24	26	25	26	18	21	21	16
Feels °C (?)	22	20	15	20	22	20	22	24	23	23	23	24	25	24	27	24	21	14	15	14	10

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Lisboa

Wind Update Continuing clean conditions at Bicas (calm at Quinta Do Conde wx 19 km from Bicas). 1.5m 11s groundswell from the NW with a 1.3m 5s windswell, also from the NW and a 0.8m 6s windswell, also from the NW. 3 swells combining to make bigger set waves.
44 minutes ago Bicas

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19 km away, 44 min ago

0 km/h

0.0

18.0

Air / Water (°C)

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Bicas surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

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 12 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.