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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 Saturday 13 Sep 2025 CST
How big are the waves at Backwash today?
The current surf forecast for Backwash at 4AM is: 1.1m 14s primary swell from a Southwest direction and 0.9m 6s secondary swell from a South-southwest direction (forecast issued at 11:00pm September 13). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Sep) | 3.5ft (1.1m) | 13s |
| Afternoon (14 Sep) | 3.5ft (1.1m) | 19s |
| Evening (14 Sep) | 4.5ft (1.3m) | 18s |
Table - waves today at Backwash. (Swell directed towards the surf break)
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 13 | 13 | 20 | 19 | 19 | 18 | 18 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 529 | 437 | 418 | 412 | 412 | 798 | 922 | 904 | 1156 | 1522 | 1579 | 1561 | 1955 | 1799 | 1756 | 2155 | 2128 | 1692 | 2128 | 1671 | 1588 | 1368 | 1275 | 1258 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | off | off | glass | cross | cross- off | cross- off | glass | cross- off | cross- off | glass | glass | cross | cross | glass | cross- off | off | off | off | glass | cross | cross- off | cross- off |
High Tide / height (m) | 7:14AM 2.84 | 7:53PM 2.52 | 8:17AM 2.63 | 9:06PM 2.37 | 9:33AM 2.48 | |||||||||||||||||||
Low Tide / height (m) | 12:57AM 0.50 | 1:40PM 0.46 | 1:59AM 0.70 | 2:48PM 0.62 | 3:15AM 0.85 | 4:06PM 0.71 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 5:34 | - | - | - | - | - | - | - | 5:32 | - | - | - | - | - | - | - | 5:31 | - |
 | |  |  |  | |  | |  | | | |  | | | | | | | | | | | | |
Rain (mm) | 4 | 2 | - | - | - | - | 1 | 2 | 8 | 11 | - | - | - | - | - | 3 | - | 1 | 1 | 1 | - | 1 | 3 | 5 |
| Temp. °C | 27 | 26 | 25 | 25 | 27 | 28 | 28 | 27 | 25 | 24 | 25 | 25 | 27 | 28 | 28 | 26 | 26 | 26 | 25 | 25 | 27 | 27 | 27 | 26 |
| Feels °C (?) | 32 | 31 | 28 | 29 | 32 | 31 | 30 | 31 | 29 | 26 | 28 | 30 | 32 | 31 | 31 | 30 | 29 | 30 | 29 | 29 | 31 | 30 | 29 | 30 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Golfo Dulce
Continuing clean conditions at Backwash (calm at Puerto Armuelles wx 48 km from Backwash). 0.8m 10s swell from the SSW with a 0.4m 14s groundswell from the WSW. 2 swells combining to make bigger set waves.
48 km away, 50 min ago
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