Surf Forecasts:
How big are the waves at Backdoor today (31 Jul):
- Morning surf: Morning surf (31 Jul, local time) - 2.5ft (0.7m), 9s period with S swell.
- Afternoon surf: Afternoon surf (31 Jul, local time) - 1.5ft (0.5m), 14s period with S swell.
- Evening surf: Evening surf (31 Jul, local time) - 2ft (0.6m), 13s period with S swell.
The current surf forecast for Backdoor at 2AM is: 0.9m 10s primary swell from a South-southwest direction and 0.2m 15s secondary swell from a South direction (forecast issued at 08:00pm July 30). The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Jul) | 2.5ft (0.7m) | 9s |
| Afternoon (31 Jul) | 1.5ft (0.5m) | 14s |
| Evening (31 Jul) | 2ft (0.6m) | 13s |
Table - waves today at Backdoor. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 26°C on Sun afternoon, min 17°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the E by Sat afternoon). | ||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | ||||||||||||||||
6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||
Wave Height (m) Direction Period (s) | S 10 | SSW 10 | S 10 | S 10 | S 10 | S 9 | SSW 9 | S 14 | S 10 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 |
Wave Graph  | ||||||||||||||||||
 kJ | 130 | 255 | 127 | 204 | 125 | 83 | 108 | 91 | 148 | 125 | 163 | 151 | 350 | 339 | 271 | 248 | 188 | 184 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | cross-off | glassy | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off |
High Tide | 3:36PM1.02m | 3:04AM1.05m | 4:02PM1.01m | 3:35AM1.06m | 4:28PM0.98m | |||||||||||||
Low Tide | 9:31PM0.27m | 9:50AM-0.02m | 10:06PM0.27m | 10:29AM0.01m | ||||||||||||||
 |  | | | |  |  |  | | | | | | | | | | | |
 | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — |
 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 21 | 21 | 20 | 22 | 23 | 22 | 20 | 20 | 19 | 19 | 18 | 19 | 23 | 22 | 21 | 20 |
Feels °C | 22 | 21 | 22 | 22 | 21 | 23 | 23 | 20 | 18 | 18 | 18 | 17 | 16 | 16 | 19 | 17 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | S 10 | SSW 10 | S 10 | S 10 | S 10 | S 9 | SSW 9 | S 10 | S 10 | S 9 | S 13 | S 9 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 |
| kJ | 130 | 255 | 127 | 204 | 125 | 83 | 108 | 90 | 148 | 64 | 163 | 104 | 350 | 339 | 271 | 248 | 188 | 184 |
Swell 2 Height (m) Direction Period (s) | E 7 | E 7 | SSW 7 | S 15 | SSW 6 | SSW 6 | S 11 | S 6 | S 13 | S 13 | S 9 | S 12 | E 10 | E 10 | E 10 | — | — | E 10 |
| kJ | 4 | 4 | 57 | 18 | 28 | 28 | 58 | 34 | 88 | 125 | 63 | 151 | 8 | 8 | 8 | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 8 | E 7 | E 8 | S 15 | SSW 11 | S 14 | S 14 | S 13 | E 9 | E 9 | E 9 | E 7 | E 10 | — | — | — | — |
| kJ | 2 | 2 | 4 | 4 | 39 | 22 | 63 | 91 | 92 | 6 | 6 | 7 | 1 | 8 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 7 | — | — | — | — | — | — | E 8 | ESE 4 | SE 5 | ESE 5 | E 4 | NE 3 | NE 3 | ESE 6 | ESE 4 | E 5 | E 5 |
| kJ | 84 | — | — | — | — | — | — | 4 | 16 | 49 | 38 | 19 | 3 | 3 | 38 | 41 | 104 | 110 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 43 | 43 | 43 | 0 | 0 | 2 | 5 | 25 | 31 | 15 | 15 | 15 | 5 | 15 | 23 | 231 | 231 | 40 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||
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