Sao Joao Surf Forecast

/ Lisboa (31 surf breaks) /

Portugal (226 surf breaks) / Lat Long: (38.66° N 9.27° W)

Surf Forecasts:

Sao Joao surfForecast / Lisboa / Portugal

48hr Weather and Surf, issued 12 pm Friday 19 Sep 2025 WEST

Forecast update in hr min s Forecast update imminent

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

Today's Sao Joao sea temperature is 18.7° C
(Which is 1.7°C colder than average for this time of year)

How big are the waves at Sao Joao today?

The current surf forecast for Sao Joao at 4PM is: 1.1m 10s primary swell from a West-northwest direction and 0.6m 10s secondary swell from a North-northwest direction (forecast issued at 12:00pm September 19). The wind direction is predicted to be cross-onshore.

Time (WEST) & Date	Wave Height	Wave Period
Morning (19 Sep)	4ft (1.2m)	10s
Afternoon (19 Sep)	3.5ft (1.1m)	10s
Evening (19 Sep)	3.5ft (1.0m)	10s

Table - waves today at Sao Joao. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Friday 19					Saturday 20								Sunday 21								Monday 22
	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM
Rating (10 max)	2	1	0	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	!	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	NNW	WNW	NW	NNW	NW	NW	NNW	NNW	NNW	NNW	NNW	NNW	NNW	NNW
Period(s) (?)	10	10	10	10	10	9	9	9	9	9	9	8	8	7	7	7	7	7	7	7	7	8	8	9
Wave Graph (?)
kJ (?)	286	269	223	205	201	189	143	140	111	108	101	75	337	251	303	303	306	326	430	520	615	845	1077	1082
Wind (km/h)	S	SW	SW	SW	W	NW	NW	N	NNW	NNW	NNW	NNW	N	N	N	N	N	NNW	NNW	N	N	N	N	N
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	glass	cross- on	cross- on	cross- on	on	cross- on	cross- on	cross	cross	cross- on	cross- on	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross
High Tide / height (m)			1:59PM 2.73				2:25AM 2.56				2:36PM 2.84				2:58AM 2.66				3:09PM 2.90				3:29AM 2.73
Low Tide / height (m)	7:47AM 0.48				8:19PM 0.26				8:24AM 0.34				8:51PM 0.17				8:57AM 0.24				9:21PM 0.12

	Friday 19					Saturday 20								Sunday 21								Monday 22
Sunrise	-	-	-	-	-	-	-	-	7:22	-	-	-	-	-	-	-	7:22	-	-	-	-	-	-	-
Sunset	-	-	-	7:38	-	-	-	-	-	-	-	7:37	-	-	-	-	-	-	-	7:36	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	24	26	25	24	22	21	20	20	21	25	22	19	17	16	16	16	18	20	20	17	15	15	14	14
Feels °C (?)	24	26	25	26	24	23	21	20	19	22	19	15	13	12	12	12	14	14	13	12	9	9	8	9

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 Sao Joao (light winds from the SSW at Tires wx 10 km from Sao Joao). 1.1m 10s swell from the WNW with a 0.5m 9s swell from the NNW. 2 swells combining to make bigger set waves.
1 hour 10 minutes ago Sao Joao

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1 h 10 min ago

6 km/h

SSW

Clean

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