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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 pm 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
30.1° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Backwash today?
The current surf forecast for Backwash at 7AM is: 0.6m 18s primary swell from a South-southwest direction and 0.7m 12s secondary swell from a South-southwest direction (forecast issued at 11:00pm May 18). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 2.5ft (0.7m) | 18s |
| Afternoon (19 May) | 2.5ft (0.7m) | 18s |
| Evening (19 May) | 2.5ft (0.7m) | 16s |
Table - waves today at Backwash. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 23mm), heaviest during Wed night. Warm (max 30°C on Wed afternoon, min 26°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | ||||||||||||||||||||||
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 | 9 AM | 12 PM | 3 PM | 6 PM | |
Swell Height Map |  |    |    |    | ||||||||||||||||||||
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 | SSW 15 | SW 15 | SW 15 | SW 15 | |
149 | 195 | 280 | 207 | 273 | 243 | 273 | 204 | 268 | 261 | 326 | 326 | 127 | 173 | 175 | 318 | 203 | 188 | 223 | 146 | 148 | 232 | 239 | 236 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | glassy | cross-on | cross-on | cross-on | cross-off | off | glassy | off | glassy | glassy | cross | cross-off | off | off | off | glassy | glassy | glassy | cross-on | cross | glassy | |
High Tide | 4:18AM3.04m | 4:32PM3.20m | 5:10AM3.01m | 5:25PM3.07m | 6:05AM2.93m | |||||||||||||||||||
Low Tide | 10:03PM-0.10m | 10:21AM0.21m | 10:53PM-0.04m | 11:14AM0.30m | 11:45PM0.08m | 12:11PM0.42m | ||||||||||||||||||
 |  | |  | | | | | | | |  | | | | | | |  |  | | | | | |
 | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — |
 | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — |
— | 1 | 1 | — | — | — | — | — | — | 1 | 2 | 1 | — | — | 1 | 4 | 5 | 1 | — | — | — | — | 1 | 5 | |
Temp °C | 28 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 29 | 29 | 30 | 28 | 27 | 27 | 26 | 26 | 28 | 30 | 29 | 28 |
33 | 32 | 32 | 32 | 33 | 33 | 32 | 33 | 33 | 32 | 32 | 32 | 34 | 32 | 33 | 32 | 30 | 32 | 31 | 31 | 32 | 33 | 32 | 33 | |
Swell 1 Height (m) Direction Period (s) | 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 | SSW 15 | SW 15 | SW 15 | SW 15 |
 kJ | 149 | 142 | 280 | 131 | 129 | 243 | 273 | 204 | 268 | 261 | 326 | 326 | 127 | 116 | 120 | 318 | 203 | 188 | 223 | 146 | 148 | 232 | 239 | 236 |
Swell 2 Height (m) Direction Period (s) | 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 | SW 11 | SSW 6 | SSW 6 | SSW 5 |
| kJ | 27 | 195 | 133 | 207 | 273 | 96 | 96 | 96 | 96 | 99 | 49 | 31 | 52 | 173 | 175 | 15 | 56 | 36 | 35 | 35 | 32 | 13 | 13 | 5 |
Swell 3 Height (m) Direction Period (s) | SW 16 | S 8 | S 8 | S 8 | S 7 | S 7 | SSW 7 | SSW 15 | S 7 | S 7 | S 7 | S 7 | SW 14 | S 7 | SSW 7 | S 12 | SSW 14 | S 6 | S 6 | SSW 6 | SSW 6 | SW 11 | SW 11 | SW 11 |
| kJ | 127 | 30 | 31 | 29 | 27 | 27 | 18 | 84 | 16 | 15 | 14 | 15 | 47 | 15 | 15 | 11 | 66 | 7 | 7 | 8 | 8 | 30 | 30 | 30 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 16 | 160 | 129 | 0 | 0 | 0 | 0 | 0 | 0 | 156 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 160 | 160 | 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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