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Backwash Surf Forecast
/ Golfo Dulce (13 surf breaks) /
Surf Forecasts:
Backwash surfForecast / Golfo Dulce / Costa Rica
48hr Weather and Surf, issued 5 am Monday 11 May 2026 CSTForecast update in hr min s Forecast update imminent
Backwash surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Backwash sea temperature is
29.7° C
(Which is slightly warmer than usual)How big are the waves at Backwash today?
The current surf forecast for Backwash at 9AM is: 1.0m 16s primary swell from a South-southwest direction and 0.8m 12s secondary swell from a South-southwest direction (forecast issued at 05:00am May 11). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 May) | 3.5ft (1.0m) | 16s |
| Afternoon (11 May) | 3ft (0.9m) | 15s |
| Evening (11 May) | 3ft (0.9m) | 15s |
Table - waves today at Backwash. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 18mm), heaviest on Mon night. Warm (max 29°C on Mon morning, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 11 | Tuesday 12 | Wednesday 13 | Thu 14 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 10 | SSW 17 | SSW 17 | SW 16 | SSW 16 | SSW 16 | |
627 | 620 | 475 | 387 | 358 | 344 | 339 | 334 | 272 | 268 | 268 | 268 | 183 | 178 | 168 | 161 | 158 | 158 | 141 | 197 | 193 | 274 | 447 | 441 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | glassy | glassy | cross-on | cross-on | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | cross | cross-off | off | off | off | cross-off | glassy | cross-on | cross | cross-off | glassy | glassy | |
High Tide | 9:43AM2.37m | 10:06PM2.23m | 10:41AM2.50m | 11:10PM2.33m | 11:34AM2.68m | |||||||||||||||||||
Low Tide | 3:17AM0.90m | 4:04PM0.99m | 4:16AM0.87m | 5:05PM0.83m | 5:13AM0.78m | 6:00PM0.62m | ||||||||||||||||||
 |  |  | | |  | | | |  | | | | | |  | | | | | | | | | |
 | 5:15 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | 5:13 |
 | — | — | — | — | 5:44 | — | — | — | — | — | — | — | 5:44 | — | — | — | — | — | — | — | 5:44 | — | — | 5:44 |
— | — | — | — | — | 1 | — | 1 | 4 | 1 | 2 | 2 | 1 | 1 | 1 | — | — | — | — | — | 1 | 1 | 1 | — | |
Temp °C | 26 | 26 | 28 | 29 | 29 | 28 | 28 | 27 | 26 | 26 | 28 | 28 | 29 | 28 | 27 | 26 | 26 | 25 | 28 | 29 | 29 | 28 | 27 | 27 |
30 | 30 | 33 | 32 | 31 | 32 | 33 | 32 | 31 | 31 | 33 | 32 | 33 | 32 | 32 | 30 | 30 | 29 | 34 | 32 | 32 | 32 | 32 | 33 | |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 10 | SSW 11 | SSW 11 | SSW 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SW 16 | SSW 16 | SSW 16 |
 kJ | 627 | 620 | 475 | 387 | 358 | 344 | 339 | 334 | 272 | 144 | 150 | 150 | 153 | 133 | 141 | 135 | 127 | 127 | 141 | 100 | 98 | 274 | 447 | 441 |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 17 | S 10 | S 10 | S 10 |
| kJ | 91 | 91 | 176 | 179 | 158 | 150 | 141 | 133 | 139 | 268 | 268 | 268 | 183 | 178 | 168 | 161 | 158 | 158 | 118 | 118 | 193 | 96 | 68 | 68 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SSW 12 | — | — | W 13 | W 14 | — | S 21 | W 9 | SW 20 | SW 20 | SW 20 | SSW 19 | SSW 19 | SW 19 | SW 18 | SW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 13 | SSW 13 | W 11 | W 11 |
| kJ | 47 | 45 | — | — | 3 | 4 | — | 8 | 2 | 16 | 15 | 15 | 37 | 36 | 92 | 85 | 82 | 123 | 121 | 197 | 120 | 118 | 2 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 9 | 0 | 0 | 160 | 160 | 0 | 0 | 0 | 0 | 0 | 0 | 160 | 33 | 0 | 0 | 0 | 0 | 0 | 0 | 160 | 338 | 0 | 0 | 0 |
Best forecast wave conditions in Golfo Dulce | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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