Surf Forecasts:
How big are the waves at Backdoor today (11 Sep):
- Afternoon surf: Afternoon surf (11 Sep, local time) - 2.5ft (0.7m), 9s period with NNW swell.
- Evening surf: Evening surf (11 Sep, local time) - 3ft (0.9m), 5s period with NNW swell.
The current surf forecast for Backdoor at 10PM is: 0.9m 6s primary swell from a North-northwest direction and 0.4m 9s secondary swell from a North-northwest direction, 0.2m 9s secondary swell from a West-northwest direction (forecast issued at 06:00pm September 11). The wind direction is predicted to be cross-shore.
| Time (WEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Sep) | - | - |
| Afternoon (11 Sep) | 2.5ft (0.7m) | 9s |
| Evening (11 Sep) | 3ft (0.9m) | 5s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Sun morning, min 19°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | |||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | NNW 6 | NNW 9 | NNW 6 | NNW 6 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NW 15 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 68 | 66 | 53 | 71 | 120 | 134 | 144 | 118 | 111 | 99 | 128 | 99 | 104 | 149 | 290 | 405 | 520 | 503 | 478 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross-off | cross-off | cross-on | cross-on | cross | cross | cross | cross-off | glassy | glassy | on | on | cross | cross |
High Tide | 3:38PM3.21m | 4:01AM2.96m | 4:15PM3.17m | 4:36AM2.94m | 4:51PM3.04m | ||||||||||||||
Low Tide | 9:53PM-0.07m | 10:02AM0.03m | 10:27PM-0.02m | 10:38AM0.08m | |||||||||||||||
 | |  | | | | | |  | | | | | | | | | | | |
 | — | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 7:16 | — | — | — | — | — |
 | — | 7:52 | — | — | — | — | — | — | — | 7:51 | — | — | — | — | — | — | — | 7:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 20 | 19 | 20 | 20 | 22 | 26 | 26 | 24 | 24 | 24 | 25 | 25 | 25 | 27 | 26 | 25 | 25 |
Feels °C | 19 | 18 | 18 | 18 | 20 | 20 | 22 | 25 | 24 | 23 | 22 | 22 | 23 | 24 | 24 | 26 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | NNW 9 | NNW 9 | NNW 9 | NNW 6 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 |
| kJ | 68 | 66 | 28 | 71 | 120 | 134 | 144 | 118 | 111 | 99 | 128 | 99 | 97 | 62 | 290 | 405 | 520 | 503 | 478 |
Swell 2 Height (m) Direction Period (s) | W 7 | W 7 | WNW 9 | NNW 9 | N 9 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NW 14 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 6 |
| kJ | 4 | 4 | 8 | 17 | 13 | 19 | 54 | 72 | 68 | 66 | 65 | 64 | 46 | 149 | 48 | 51 | 38 | 41 | 32 |
Swell 3 Height (m) Direction Period (s) | WNW 8 | W 8 | W 7 | WNW 9 | SW 13 | N 9 | SW 13 | S 13 | NW 12 | NW 16 | NW 16 | NW 15 | NW 15 | NW 10 | W 9 | W 9 | S 12 | S 11 | — |
| kJ | 7 | 5 | 4 | 16 | 7 | 13 | 7 | 3 | 6 | 11 | 40 | 80 | 104 | 77 | 40 | 41 | 3 | 2 | — |
Wind waves Height (m) Direction Period (s) | NNW 6 | NNW 5 | NNW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 55 | 50 | 53 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 215 | 165 | 81 | 29 | 7 | 0 | 0 | 25 | 25 | 25 | 21 | 21 | 0 | 0 | 0 | 22 | 25 | 28 | 5 |
Best forecast wave conditions in Ericeira | |||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||
Header Global | |||||||||||||||||||
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