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Surf Forecasts:
Backdoor surfForecast / Ericeira / Portugal
48hr Weather and Surf, issued 6 am Sunday 10 May 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
16.5° C
(Which is normal for this time of year)How big are the waves at Backdoor today?
The current surf forecast for Backdoor at 1PM is: 3.0m 9s primary swell from a West-southwest direction and 0.9m 11s secondary swell from a North-northwest direction (forecast issued at 06:00am May 10). The wind direction is predicted to be cross-shore.
| Time (WEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 May) | 10ft (3.0m) | 9s |
| Afternoon (10 May) | 11ft (3.5m) | 9s |
| Evening (10 May) | 10ft (3.0m) | 9s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 10mm), heaviest on Sun afternoon. Very mild (max 17°C on Mon morning, min 14°C on Tue night). Winds decreasing (strong winds from the SSW on Sun afternoon, calm by Tue night). | ||||||||||||||||||||||||
Sunday 10 | Monday 11 | Tuesday 12 | Wed 13 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | NNW 12 | NNW 12 | NNW 12 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | |
1589 | 1574 | 1502 | 1653 | 2038 | 2018 | 1430 | 1033 | 682 | 569 | 874 | 931 | 764 | 619 | 505 | 415 | 435 | 331 | 269 | 207 | 154 | 147 | 131 | 101 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | on | glassy | glassy | |
High Tide | 9:57AM1.97m | 10:19PM2.23m | 11:06AM2.09m | 11:21PM2.35m | 12:02PM2.28m | 00:15AM2.53m | ||||||||||||||||||
Low Tide | 3:40AM0.94m | 3:52PM1.02m | 4:49AM0.83m | 5:03PM0.92m | 5:46AM0.66m | 6:02PM0.75m | ||||||||||||||||||
 |  |  | | | | | | | | |  | |  |  |  | |  | | | | |  | | |
 | 6:30 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | 6:26 |
 | — | — | — | — | — | 8:37 | — | — | — | — | — | — | — | 8:38 | — | — | — | — | — | — | — | 8:39 | — | 8:40 |
1 | 2 | — | — | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | 1 | — | — | — | — | 1 | 1 | — | — | — | — | — | |
Temp °C | 14 | 14 | 15 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 15 |
7 | 7 | 7 | 8 | 8 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 16 | 15 | |
Swell 1 Height (m) Direction Period (s) | NNW 12 | NNW 11 | NNW 11 | NNW 11 | NNW 12 | NNW 12 | NNW 12 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | NNW 12 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 8 |
 kJ | 193 | 183 | 176 | 180 | 203 | 274 | 269 | 1033 | 682 | 527 | 412 | 931 | 764 | 619 | 505 | 415 | 435 | 331 | 269 | 207 | 154 | 147 | 131 | 101 |
Swell 2 Height (m) Direction Period (s) | — | — | S 16 | — | NNW 10 | S 20 | S 19 | NNW 12 | NNW 12 | NNW 12 | NNW 12 | WNW 9 | WNW 9 | SSW 18 | SW 7 | SW 7 | SW 6 | SW 6 | SW 6 | SSW 16 | SSW 16 | SW 6 | SW 6 | SW 6 |
| kJ | — | — | 5 | — | 32 | 8 | 7 | 324 | 385 | 569 | 874 | 17 | 15 | 30 | 153 | 97 | 79 | 64 | 51 | 25 | 25 | 47 | 39 | 38 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 19 | SW 19 | WNW 10 | SW 18 | SW 18 | SW 18 | SW 17 | SSW 17 | WNW 9 | SSW 16 | SSW 16 | SSW 16 | — | — | SSW 16 | SSW 15 | SSW 15 |
| kJ | — | — | — | — | — | — | — | 15 | 15 | 18 | 13 | 12 | 12 | 12 | 29 | 30 | 25 | 25 | 25 | — | — | 24 | 23 | 21 |
Wind waves Height (m) Direction Period (s) | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | — | — | — | — | WSW 8 | SW 7 | SW 7 | — | — | — | — | — | SW 6 | SW 6 | — | — | — |
| kJ | 1589 | 1574 | 1502 | 1653 | 2038 | 2018 | 1430 | — | — | — | — | 306 | 217 | 188 | — | — | — | — | — | 58 | 56 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 413 | 423 | 490 | 491 | 425 | 423 | 413 | 413 | 49 | 49 | 49 | 49 | 49 | 49 | 1 | 1 | 40 | 1 | 49 | 214 | 294 | 49 | 0 | 0 |
Best forecast wave conditions in Ericeira | ||||||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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