Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Backdoor surfForecast / Ericeira / Portugal
48hr Weather and Surf, issued 5 am Sunday 28 Dec 2025 WETForecast 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
14.7° C
(Which is 1.4°C colder than average for this time of year)How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 8AM is: 1.2m 12s primary swell from a West-northwest direction and 0.4m 5s secondary swell from a North direction (forecast issued at 05:00am December 28). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Dec) | 4ft (1.2m) | 12s |
| Afternoon (28 Dec) | 3.5ft (1.0m) | 11s |
| Evening (28 Dec) | 2.5ft (0.8m) | 11s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 28 | Monday 29 | Tuesday 30 | Wed 31 | |||||||||||||||||||||
| 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 14 | 13 | 14 | 14 | 12 | 13 | 13 | 13 | 17 | 16 | 16 | 16 | 15 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 551 | 393 | 405 | 317 | 261 | 207 | 135 | 166 | 129 | 93 | 130 | 132 | 146 | 112 | 156 | 163 | 163 | 217 | 346 | 341 | 612 | 639 | 631 | 521 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | off | off | off | off | off | glass | glass | off | off |
High Tide / height (m) | 8:12AM 2.43 | 8:59PM 2.27 | 9:23AM 2.41 | 10:10PM 2.35 | 10:37AM 2.45 | 11:17PM 2.50 | ||||||||||||||||||
Low Tide / height (m) | 1:51AM 0.78 | 2:38PM 0.64 | 3:03AM 0.79 | 3:47PM 0.63 | 4:19AM 0.72 | 4:56PM 0.56 | ||||||||||||||||||
Sunday 28 | Monday 29 | Tuesday 30 | Wed 31 | |||||||||||||||||||||
| Sunrise | - | - | 7:54 | - | - | - | - | - | - | - | 7:54 | - | - | - | - | - | - | - | 7:54 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:23 | - | - | - |
 | |  | |  | | | | | | | | | | | | |  |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 10 | 12 | 14 | 13 | 11 | 10 | 11 | 11 | 11 | 13 | 14 | 13 | 12 | 12 | 12 | 11 | 11 | 12 | 13 | 13 | 12 | 12 |
| Feels °C (?) | 4 | 4 | 4 | 7 | 10 | 10 | 7 | 7 | 9 | 8 | 8 | 11 | 12 | 10 | 10 | 10 | 10 | 9 | 9 | 10 | 12 | 12 | 10 | 10 |
- 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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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Backdoor 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.
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