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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 11 am Monday 18 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
30.0° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Backwash today?
The current surf forecast for Backwash at 2PM is: 0.8m 13s primary swell from a South-southwest direction and 0.6m 7s secondary swell from a South direction (forecast issued at 11:00am May 18). The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 2.5ft (0.8m) | 13s |
| Afternoon (18 May) | 2.5ft (0.8m) | 13s |
| Evening (18 May) | 2.5ft (0.7m) | 13s |
Table - waves today at Backwash. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 19mm), heaviest on Wed afternoon. Warm (max 29°C on Mon morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 3 AM | 6 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 13 | SSW 17 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SW 16 | SW 16 | SSW 16 | SSW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 15 | SW 15 | SSW 15 | |
222 | 219 | 219 | 175 | 149 | 195 | 280 | 207 | 273 | 243 | 273 | 204 | 268 | 261 | 326 | 326 | 127 | 173 | 175 | 318 | 203 | 188 | 223 | 146 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | cross-on | cross | glassy | glassy | glassy | glassy | glassy | cross | cross | cross-off | glassy | glassy | off | glassy | glassy | cross | cross-off | off | off | glassy | cross-off | glassy | |
High Tide | 3:42PM3.27m | 4:18AM3.04m | 4:32PM3.20m | 5:10AM3.01m | 5:25PM3.07m | |||||||||||||||||||
Low Tide | 9:29AM0.20m | 10:03PM-0.10m | 10:21AM0.21m | 10:53PM-0.04m | 11:14AM0.30m | 11:45PM0.08m | ||||||||||||||||||
 | |  |  | |  | | | | | | | | | | | | |  | | | | |  | |
 | 5:13 | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — |
 | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | 5:45 |
— | — | — | — | — | 1 | 1 | — | — | — | — | 1 | 4 | 2 | 1 | — | — | — | 2 | 5 | 2 | — | — | — | |
Temp °C | 28 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 28 | 27 | 27 | 26 | 29 | 29 | 29 | 28 | 26 | 26 | 26 | 26 |
33 | 33 | 32 | 32 | 33 | 32 | 32 | 33 | 33 | 32 | 32 | 32 | 33 | 32 | 32 | 31 | 34 | 32 | 32 | 32 | 30 | 30 | 30 | 31 | |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SW 13 | SSW 13 | SSW 13 | SSW 18 | SSW 12 | SSW 12 | SSW 18 | SSW 18 | SSW 18 | SW 16 | SW 16 | SSW 16 | SSW 16 | SW 16 | SSW 13 | SSW 13 | SSW 16 | SW 16 | SW 15 | SW 15 | SSW 15 |
 kJ | 222 | 219 | 219 | 175 | 149 | 142 | 280 | 131 | 129 | 243 | 273 | 204 | 268 | 261 | 326 | 326 | 127 | 116 | 120 | 318 | 203 | 188 | 223 | 146 |
Swell 2 Height (m) Direction Period (s) | S 7 | S 7 | S 7 | SSW 16 | S 7 | SSW 17 | SSW 12 | SSW 18 | SSW 18 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SW 11 | SSW 12 | SSW 16 | SSW 16 | SSW 7 | SSW 12 | SW 12 | SW 12 | SW 12 |
| kJ | 27 | 26 | 38 | 175 | 27 | 195 | 133 | 207 | 273 | 94 | 96 | 96 | 96 | 99 | 49 | 31 | 52 | 173 | 175 | 9 | 56 | 36 | 35 | 35 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SSW 17 | SW 16 | S 7 | SW 16 | S 8 | S 8 | S 8 | S 7 | S 7 | S 7 | SSW 15 | SSW 7 | SSW 7 | SSW 7 | S 7 | SW 14 | S 7 | SSW 7 | S 12 | SSW 14 | SSW 14 | S 7 | S 7 |
| kJ | 78 | 111 | 130 | 26 | 127 | 30 | 31 | 29 | 27 | 27 | 27 | 84 | 17 | 16 | 15 | 15 | 47 | 15 | 15 | 11 | 66 | 40 | 9 | 9 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 165 | 110 | 18 | 0 | 0 | 0 | 0 | 0 | 160 | 129 | 0 | 0 | 0 | 0 | 0 | 0 | 340 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Golfo Dulce | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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