Surf Forecast Surf Report

Backdoor surfForecast / Ericeira / Portugal

information circle12 Day Weather and Surf, issued 12 pm Wednesday 16 Apr 2025 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
16.6° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Backdoor this week:

The surf forecast for Backdoor over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Apr 16) at 10PM. The primary swell is predicted to be 2.5m and 11s period with a secondary swell of 0.1m and 12s. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Backdoor in the next 12 days are 4.5m 14s and forecast to arrive on Sunday (Apr 20) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 12s period and expected on Thursday (Apr 17) at 1AM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 16th Apr)8ft (2.5m) 11s
Best Surf10AM (Wed 23rd Apr)6ft (1.9m) 12s
Most Powerful 4AM (Sun 20th Apr)15ft (4.5m) 14s

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

Updates in  hr  min  s Forecast update imminent
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
3
NW
2.5
NW
2.4
NW
2.1
NW
1.6
NNW
1.3
NNW
2.2
W
2.1
W
3
WNW
3.5
NW
3.5
NW
4
NW
4.5
NW
3
NNW
2.1
NNW
1.5
NNW
1.2
NNW
1.2
WNW
1.5
WNW
1.4
NW
0.9
WNW
1.9
NW
2.1
NW
2.1
NW
2.2
WNW
2.2
NW
2
WNW
1.8
NW
1.7
WNW
1.6
NW
1.4
NW
1.5
NW
1.1
NW
1.6
NW
1.5
NNW
1.5
NNW
Period(s) (?)1212111010109912121113131211101011101010121212141312121211111111101010
Wave
Graph
(?)Metric surfscale
Energy (?)2113171012278095303087206992204327426996172636628521085450288322504408143110011411264196915511177902807593503524286471439419
Wind
(km/h)
25
W
30
W
10
WNW
10
SW
20
SW
25
SW
30
WSW
25
W
40
NNW
40
NW
40
NW
45
NW
35
NNW
25
NW
20
WNW
15
NNW
20
NW
15
NNW
15
NNW
15
NW
10
N
15
NNE
15
N
15
NNE
10
E
5
WNW
5
ENE
10
S
15
WSW
25
NW
25
NNW
25
NNW
20
N
25
NNE
30
N
25
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onononcross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
off
cross-
off
crosscross-
off
offoncross-
off
crossoncross-
on
cross-
on
crosscrosscross-
off
crosscross
High Tide
/ height (m)
5:24PM
2.62
5:42AM
2.43
5:57PM
2.49
6:18AM
2.26
6:36PM
2.35
7:02AM
2.11
7:28PM
2.21
8:05AM
1.98
8:41PM
2.13
9:34AM
1.94
10:08PM
2.18
11:01AM
2.05
11:23PM
2.35
12:07PM
2.26
12:22AM
2.58
1:00PM
2.52
1:13AM
2.83
1:46PM
2.77
2:00AM
3.04
2:29PM
2.98
2:45AM
3.17
3:12PM
3.12
3:31AM
3.21
Low Tide
/ height (m)
11:11AM
0.48
11:33PM
0.51
11:42AM
0.62
12:09AM
0.66
12:17PM
0.77
12:52AM
0.82
1:02PM
0.91
1:50AM
0.95
2:06PM
1.03
3:13AM
1.00
3:34PM
1.06
4:43AM
0.89
5:01PM
0.95
5:52AM
0.67
6:07PM
0.74
6:46AM
0.40
7:00PM
0.49
7:32AM
0.15
7:47PM
0.25
8:16AM
-0.03
8:33PM
0.05
8:59AM
-0.13
9:18PM
-0.08
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Sunrise7:00--6:58--6:56--6:56--6:54--6:52--6:52--6:50--6:48--6:48--6:46--6:45--
Sunset-8:15--8:15--8:16--8:17--8:19--8:20--8:21--8:21--8:22--8:22--8:23--8:24-
rain showersrain showersclearpart cloudclearrain showersrain showersclearrain showersclearclearrain showersrain showerspart cloudrain showerscloudclearpart cloudclearclearclearclearclearclearclearclearclearpart cloudcloudpart cloudclearclearclearclearclearclear
Rain (mm)
12---15-1--12-2---------------------
Temp. °C141515171715161614141414141415151513151514192119232219181815151514151613
Feels °C (?)9101416141212118554791313121012121216181622211817161110101010117

Short Range Forecast: Moderate rain (total 10mm), heaviest on Fri morning. Very mild (max 17°C on Thu morning, min 13°C on Fri night). Winds increasing (light winds from the WNW on Wed night, strong winds from the NW by Fri night).

Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Sat night. Very mild (max 15°C on Sun night, min 13°C on Sat night). Winds decreasing (strong winds from the NW on Sat night, light winds from the WNW by Sun night).

Days 6-9 Weather Summary Mostly dry. Warm (max 23°C on Thu morning, min 14°C on Tue morning). Wind will be generally light.

Long Range Forecast: Mostly dry. Very mild (max 18°C on Fri morning, min 12°C on Sat night). Winds increasing (light winds from the S on Fri morning, fresh winds from the N by Mon morning).

  • 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 Backdoor Surf forecast

The above surf forecast table for Backdoor provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Backdoor can be found by selecting the local surf guide option on the grey menu. Our Backdoor 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 (Backdoor) 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 Backdoor 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.

Backdoor is 14 km (9 miles) from the city of Sintra. If you plan a holiday in Ericeira, look for hotels and other accommodation in Sintra. Sintra has rooms for a wide range of budgets as well as car hire and transport links.

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