Backdoor surfForecast / Ericeira / Portugal

information circle48hr Weather and Surf, issued 6 am Tuesday 12 May 2026 WEST
Forecast update in hr  min  s Forecast update imminent
Backdoor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Backdoor sea temperature is
16.5° C
(Which is normal for this time of year)

How big are the waves at Backdoor today?

The current surf forecast for Backdoor at 10AM is: 1.3m 10s primary swell from a North-northwest direction and 1.0m 6s secondary swell from a Southwest direction (forecast issued at 06:00am May 12). An open ocean swell of 0.2m 16s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (WEST) & DateWave HeightWave Period
Morning (12 May)4.5ft (1.3m)10s
Afternoon (12 May)3.5ft (1.1m)9s
Evening (12 May)3ft (0.9m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Tue morning. Very mild (max 16°C on Tue morning, min 13°C on Wed night). Winds increasing (calm on Wed morning, strong winds from the N by Thu night).

Tuesday
12
Wednesday
13
Thursday
14
Fri
15
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
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
Rating
(10 max)
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.4
NNW
11
1.3
NNW
10
1.3
NNW
10
1.2
NNW
9
1.1
NNW
9
0.9
NNW
9
0.9
NNW
9
0.9
NNW
8
0.9
NNW
8
0.9
NNW
8
0.8
NNW
8
0.8
NNW
8
0.7
NNW
8
0.7
NNW
7
0.9
NNW
9
0.8
NNW
9
1
NNW
9
1.3
NNW
8
1.6
NNW
7
2
NNW
7
2.2
NNW
8
2.5
NNW
8
2.5
NNW
8
3
NNW
9
Wave Graph
Metric surfscale
Energy kJ
427
320
301
232
188
140
131
125
96
94
71
66
51
48
116
106
166
211
247
414
540
746
867
1423
Wind (km/h)
15
SW
20
SW
20
SSW
20
SSW
20
SSW
15
SW
10
SSW
10
SSE
5
SSE
5
ESE
5
SSW
10
WNW
15
NW
15
NNW
20
N
20
N
25
N
25
N
30
N
35
N
40
N
40
N
40
N
40
N
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
glassy
glassy
on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
12:02PM2.28m
00:15AM2.53m
12:51PM2.50m
1:04AM2.71m
1:36PM2.72m
Low Tide
5:46AM0.66m
6:02PM0.75m
6:36AM0.46m
6:53PM0.54m
7:21AM0.27m
7:41PM0.33m
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
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>
6:28
6:26
6:26
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:39
8:40
8:42
8:42
2
2
1
Temp °C
14
14
15
16
16
16
15
15
14
14
15
16
16
16
15
14
14
13
14
15
15
14
14
14
11
11
12
13
12
13
14
15
13
14
15
15
14
14
13
11
10
9
8
8
7
7
7
7
Swell 1
Height (m)
Direction
Period (s)
1.4
NNW
11
1.3
NNW
10
1.3
NNW
10
1.2
NNW
9
1.1
NNW
9
0.9
NNW
9
1
SW
6
0.9
SW
6
0.9
NNW
8
0.9
NNW
8
0.8
NNW
8
0.8
NNW
8
0.7
NNW
8
0.7
NNW
7
0.9
NNW
9
0.8
NNW
9
0.4
SW
5
0.3
WSW
5
0.2
WSW
5
0.2
NNW
16
0.3
NNW
15
0.1
SW
13
1
NNW
13
0.1
SW
13
Energy kJ
427
320
301
232
188
140
66
56
96
94
71
66
51
48
116
106
6
5
2
26
43
7
342
7
Swell 2
Height (m)
Direction
Period (s)
1.1
WSW
6
1
WSW
6
0.2
SSW
16
0.2
SSW
16
0.2
SSW
16
0.2
SSW
16
0.9
NNW
9
0.9
NNW
8
0.8
SW
6
0.8
SW
6
0.6
SW
6
0.6
SW
6
0.6
SW
5
0.4
NNW
9
0.4
SW
5
0.4
SW
5
0.1
SW
14
0.1
SW
13
0.2
W
11
0.2
WNW
11
0.2
W
11
0.1
SW
13
0.1
SW
13
Energy kJ
96
73
25
25
25
24
131
125
39
39
25
19
18
29
9
7
7
7
9
12
9
7
7
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
16
0.2
SSW
16
0.2
SSW
16
0.2
SSW
16
0.2
SSW
15
0.2
SSW
15
0.2
SSW
15
0.2
SSW
14
0.2
SSW
14
0.2
SSW
14
0.4
NNW
9
0.5
SW
5
0.2
SSW
14
0.2
SSW
14
0.1
W
12
0.1
W
11
0.1
SW
13
0.1
SW
13
0.1
SW
13
Energy kJ
25
25
25
24
23
21
21
21
21
21
29
13
20
19
3
2
7
7
7
Wind waves
Height (m)
Direction
Period (s)
1
SW
6
1
SW
6
1.1
SW
6
1.1
SW
6
0.2
NNW
2
0.5
NNW
4
1
NNW
9
1.3
NNW
8
1.6
NNW
7
2
NNW
7
2.2
NNW
8
2.5
NNW
8
2.5
NNW
8
3
NNW
9
Energy kJ
68
66
75
86
1
8
166
211
247
414
540
746
867
1423
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
1
1
2
2
1
1
1
1
1
2
1
1
1
1
1
4
2
2
4
1
2
Distance (km)
49
49
49
49
49
22
1
0
0
0
0
215
960
967
29
40
131
131
554
980
980
549
509
407
Best forecast wave conditions in Ericeira
Rating
(10 max)
2
2
1
1
1
Best forecast wave conditions in Portugal
Rating
(10 max)
2
2
4
4
4
4
3
2
1
1
1
3
2
2
2
2
2
2
2
2
2
2
2
2
Header Global
Rating
(10 max)
9
5
9
8
8
9
9
9
9
9
7
6
7
6
8
9
9
5
5
5
5
5
5
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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