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Backdoor surfForecast / Ericeira / Portugal
48hr Weather and Surf, issued 5 pm Wednesday 21 Jan 2026 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
14.2° C
(Which is 1.2°C colder than average for this time of year)How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 9PM is: 5.5m 13s primary swell from a Northwest direction (forecast issued at 05:00pm January 21). The wind direction is predicted to be cross-onshore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jan) | - | - |
| Afternoon (21 Jan) | 13ft (4.0m) | 13s |
| Evening (21 Jan) | 18ft (5.5m) | 13s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 14 | 13 | 14 | 14 | 15 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 6000 | 6793 | 10891 | 17558 | 21542 | 20802 | 19800 | 17274 | 14110 | 10274 | 11669 | 9563 | 10091 | 11725 | 15434 | 17715 | 19331 | 21634 | 26189 | 26071 | 26264 | 26650 | 28598 | 30671 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | cross- on | cross- on | on | on | on | cross- on | cross- on | cross- on |
High Tide / height (m) | 4:22PM 2.65 | 4:36AM 2.94 | 4:58PM 2.63 | 5:12AM 2.88 | 5:37PM 2.57 | 5:52AM 2.77 | ||||||||||||||||||
Low Tide / height (m) | 10:20PM 0.29 | 10:51AM 0.23 | 10:56PM 0.33 | 11:28AM 0.28 | 11:35PM 0.42 | |||||||||||||||||||
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:50 | - | - | - | - | - | - | - | 7:50 | - | - | - | - | - | - | - | 7:50 | - |
| Sunset | 5:45 | - | - | - | - | - | - | - | 5:45 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - |
 |  | |  | | |  | |  |  |  | | | | | | |  | | | | |  |  | |
Rain (mm) | - | - | - | - | - | - | - | - | 2 | 5 | 4 | - | - | 1 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 3 | 2 | 2 |
| Temp. °C | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 14 | 15 | 13 | 12 | 11 | 11 | 10 | 10 | 11 | 10 | 9 | 10 | 9 | 9 | 11 |
| Feels °C (?) | 7 | 6 | 4 | 4 | 5 | 6 | 8 | 8 | 5 | 5 | 8 | 5 | 4 | 4 | 3 | -1 | -3 | -2 | -1 | -1 | 0 | -2 | -2 | 0 |
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