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Surf Forecasts:
Backdoor surfForecast / Ericeira / Portugal
48hr Weather and Surf, issued 6 pm Wednesday 29 Apr 2026 WESTForecast 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
16.1° C
(Which is normal for this time of year)How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 1AM is: 1.0m 11s primary swell from a West-northwest direction and 0.8m 8s secondary swell from a North-northwest direction (forecast issued at 06:00pm April 29). The wind direction is predicted to be cross-onshore.
| Time (WEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Apr) | 2.5ft (0.8m) | 18s |
| Afternoon (30 Apr) | 3.5ft (1.1m) | 16s |
| Evening (30 Apr) | 4.5ft (1.3m) | 16s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 18°C on Thu morning, min 14°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 29 | Thursday 30 | Friday 1 | Sat 2 | |||||||||||||||||||||
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 | 10 AM | 1 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WNW 12 | WNW 12 | WNW 12 | WNW 11 | W 11 | NW 19 | NW 18 | NW 17 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NW 14 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | |
367 | 355 | 343 | 263 | 247 | 242 | 447 | 640 | 746 | 897 | 1014 | 949 | 924 | 911 | 821 | 799 | 676 | 569 | 552 | 552 | 431 | 411 | 324 | 278 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | on | on | on | glassy | glassy | glassy | on | on | cross-on | cross-on | cross-on | glassy | cross | cross | cross-on | |
High Tide | 2:21PM2.67m | 2:34AM2.76m | 2:55PM2.76m | 3:09AM2.77m | 3:26PM2.80m | 3:43AM2.74m | ||||||||||||||||||
Low Tide | 8:25PM0.39m | 8:44AM0.29m | 8:59PM0.32m | 9:14AM0.28m | 9:33PM0.29m | 9:45AM0.32m | ||||||||||||||||||
 |  |  |  | | | |  | | | | | | | | | | | |  | | | | | |
 | — | — | — | — | 6:41 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:39 | — | — | — |
 | — | 8:27 | — | — | — | — | — | — | — | 8:28 | — | — | — | — | — | — | — | 8:29 | — | — | — | — | — | 8:30 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 17 | 17 | 16 | 16 | 15 | 15 | 16 | 17 | 17 | 16 | 15 | 15 | 14 | 14 | 16 | 17 |
11 | 12 | 13 | 13 | 14 | 15 | 15 | 15 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 15 | 16 | 14 | 14 | 15 | 14 | 13 | 14 | 15 | |
Swell 1 Height (m) Direction Period (s) | WNW 12 | WNW 12 | WNW 12 | WNW 11 | W 11 | W 11 | WNW 11 | NW 17 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NW 14 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 |
 kJ | 367 | 355 | 343 | 263 | 247 | 242 | 198 | 640 | 746 | 897 | 1014 | 949 | 924 | 911 | 821 | 799 | 676 | 569 | 552 | 552 | 431 | 411 | 324 | 278 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 8 | N 8 | NNW 8 | NNW 8 | N 8 | NW 18 | WNW 11 | WNW 10 | W 10 | W 10 | W 10 | W 11 | W 11 | W 12 | W 11 | W 11 | W 11 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 |
| kJ | 60 | 64 | 86 | 87 | 85 | 60 | 447 | 194 | 180 | 135 | 135 | 135 | 143 | 198 | 213 | 202 | 154 | 151 | 149 | 146 | 133 | 125 | 158 | 154 |
Swell 3 Height (m) Direction Period (s) | — | — | NW 18 | WSW 5 | WSW 5 | NW 19 | N 8 | N 8 | N 8 | N 8 | N 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | WSW 4 | N 7 | NNW 8 | NNW 6 | N 6 | N 6 | N 6 | N 6 | N 6 |
| kJ | — | — | 12 | 24 | 19 | 224 | 58 | 60 | 43 | 42 | 29 | 19 | 19 | 10 | 10 | 4 | 8 | 13 | 4 | 3 | 3 | 3 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | W 5 | WSW 4 | WSW 5 | — | — | — | — | WSW 5 | WSW 5 | — | — | — | — | — | — | — | WSW 4 | W 4 | — | — | — | — | — | — |
| kJ | 24 | 27 | 22 | — | — | — | — | 8 | 9 | — | — | — | — | — | — | — | 3 | 3 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 412 | 49 | 49 | 49 | 1 | 1 | 1 | 49 | 52 | 29 | 25 | 25 | 0 | 0 | 0 | 49 | 25 | 25 | 25 | 25 | 0 | 1 | 1 | 22 |
Best forecast wave conditions in Ericeira | ||||||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||||||
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