Surf Forecasts:
How big are the waves at Backdoor today (30 Sep):
- Morning surf: Morning surf (30 Sep, local time) - 6.5ft (2.0m), 10s period with W swell.
- Afternoon surf: Afternoon surf (30 Sep, local time) - 5ft (1.6m), 11s period with NW swell.
- Evening surf: Evening surf (30 Sep, local time) - 8ft (2.5m), 11s period with WNW swell.
The current surf forecast for Backdoor at 4AM is: 2.2m 9s primary swell from a West direction and 0.3m 10s secondary swell from a Southwest direction (forecast issued at 12:00am September 30). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (WEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Sep) | 6.5ft (2.0m) | 10s |
| Afternoon (30 Sep) | 5ft (1.6m) | 11s |
| Evening (30 Sep) | 8ft (2.5m) | 11s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 12mm), heaviest on Tue night. Warm (max 21°C on Tue night, min 16°C on Thu night). Winds increasing (calm on Tue night, fresh winds from the N by Thu morning). | ||||||||||||||||||||||||
Wednesday 30 | Thursday 1 | Friday 2 | ||||||||||||||||||||||
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 | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | WSW 9 | W 9 | W 10 | W 10 | W 10 | NW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 12 | WNW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 15 | NW 14 | NW 14 | NW 14 | NW 14 | NW 14 | NW 14 | NW 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 1041 | 854 | 813 | 745 | 600 | 595 | 1287 | 1568 | 2092 | 2716 | 2830 | 2891 | 2613 | 2341 | 2574 | 2185 | 4284 | 4216 | 3859 | 3468 | 3104 | 2764 | 2130 | 1811 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-off | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-on | cross-on | cross | cross |
High Tide | 5:22AM2.89m | 5:44PM2.79m | 6:05AM2.75m | 6:33PM2.56m | 6:57AM2.57m | 7:34PM2.31m | ||||||||||||||||||
Low Tide | 11:09PM0.14m | 11:30AM0.19m | 11:50PM0.32m | 12:17PM0.36m | 00:37AM0.54m | 1:14PM0.57m | ||||||||||||||||||
 | |  |  |  | | |  | | |  | | | | | | | | | | |  | |  | |
 | — | — | 7:31 | — | — | — | — | — | — | — | 7:33 | — | — | — | — | — | — | — | 7:33 | — | — | — | — | — |
 | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:21 | — | — | — | — | — | — | — | 7:19 | — |
mm | 6 | 2 | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 18 | 18 | 20 | 20 | 19 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 18 | 21 | 21 | 19 | 19 |
Feels °C | 19 | 21 | 19 | 19 | 18 | 17 | 16 | 16 | 14 | 13 | 12 | 12 | 13 | 13 | 12 | 12 | 13 | 14 | 15 | 18 | 20 | 20 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | W 9 | W 10 | W 10 | W 10 | W 10 | WNW 11 | WNW 11 | WNW 11 | WNW 12 | WNW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 15 | NW 14 | NW 14 | NW 14 | NW 14 | NW 14 | NW 14 | NW 13 |
| kJ | 1041 | 854 | 813 | 745 | 600 | 513 | 1287 | 1568 | 2092 | 2716 | 2830 | 2891 | 2613 | 2341 | 2574 | 2185 | 4284 | 4216 | 3859 | 3468 | 3104 | 2764 | 2130 | 1811 |
Swell 2 Height (m) Direction Period (s) | SW 10 | SW 10 | NW 11 | NW 11 | NW 10 | NW 11 | SSW 9 | SSW 9 | SSW 9 | SW 9 | SW 8 | SW 9 | SW 16 | SW 16 | SW 16 | NW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 |
| kJ | 17 | 16 | 123 | 268 | 384 | 595 | 8 | 8 | 8 | 3 | 17 | 3 | 10 | 10 | 10 | 1224 | 10 | 9 | 8 | 8 | 8 | 8 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 10 | SSW 10 | SSW 10 | SSW 9 | — | — | — | S 18 | SW 9 | SW 16 | SW 9 | SW 16 | SW 16 | SW 16 | — | — | — | — | — | — | — | — |
| kJ | — | — | 10 | 10 | 9 | 8 | — | — | — | 6 | 3 | 10 | 3 | 10 | 10 | 10 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NNW 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 49 | 0 | 0 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 29 | 28 | 29 | 256 | 256 | 29 | 25 | 25 | 25 | 0 | 25 | 25 | 25 | 25 |
Best forecast wave conditions in Ericeira | ||||||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||||||
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