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Backwash Surf Forecast
/ Golfo Dulce (13 surf breaks) /
Surf Forecasts:
Backwash surfForecast / Golfo Dulce / Costa Rica
12 Day Weather and Surf, issued 11 pm Tuesday 19 Aug 2025 CST
Best Forecast Surf Conditions for Backwash this week:
The surf forecast for Backwash over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 20) at 6AM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 0.8m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Backwash in the next 12 days are 2.2m 16s and forecast to arrive on Monday (Aug 25) at 9PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 6s period and expected on Wednesday (Aug 20) at 3PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 20th Aug) | 2.5ft (0.7m) 16s |
| Best Surf | 9PM (Sun 24th Aug) | 4.5ft (1.3m) 19s |
| Most Powerful | 9PM (Mon 25th Aug) | 7ft (2.2m) 16s |
Table - best surf conditions forecast for Backwash over the next 12 days.
Short Range Forecast Heavy rain (total 42mm), heaviest during Fri afternoon. Warm (max 28°C on Wed morning, min 25°C on Wed night). Wind will be generally light. | Days 3-6 Weather Summary Heavy rain (total 69mm), heaviest during Sat night. Warm (max 28°C on Mon afternoon, min 23°C on Sat night). Wind will be generally light. | |||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 16 | 15 | 15 | 15 | 14 | 15 | 18 | 14 | 11 | 13 | 7 | 7 | 7 | 21 | 20 | 19 | 18 | 17 | 16 | 16 | 15 | |
Wave (?)Graph  | ||||||||||||||||||||||
| Energy (?) | 452 | 347 | 324 | 403 | 494 | 623 | 582 | 616 | 965 | 1139 | 549 | 528 | 532 | 561 | 879 | 1642 | 1744 | 1727 | 2567 | 2338 | 1830 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | glass | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | glass | cross- off | off | glass | cross- off | off | glass | cross | |
High Tide / height (m) | 12:12PM 2.62 | 12:58AM 2.54 | 1:13PM 2.72 | 1:52AM 2.70 | 2:05PM 2.82 | 2:38AM 2.85 | 2:50PM 2.89 | 3:18AM 2.96 | 3:31PM 2.92 | 3:56AM 3.02 | 4:10PM 2.91 | 4:31AM 3.02 | 4:47PM 2.85 | |||||||||
Low Tide / height (m) | 5:56AM 0.79 | 6:39PM 0.51 | 7:01AM 0.68 | 7:34PM 0.39 | 7:56AM 0.55 | 8:21PM 0.29 | 8:43AM 0.44 | 9:03PM 0.23 | 9:25AM 0.36 | 9:41PM 0.22 | 10:05AM 0.32 | 10:17PM 0.25 | 10:42AM 0.33 | |||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | ||||||||||||||||
| Sunrise | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | |
| Sunset | - | - | 5:46 | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | - | - | 5:44 | |
 |  |  |  | | | | | | | | |  |  |  |  | | | | | | ||
Rain (mm) | 2 | 1 | 7 | 1 | 2 | 5 | 10 | 4 | 10 | 14 | 4 | 11 | 38 | - | - | - | - | 2 | 2 | 1 | 7 | |
| Temp. °C | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 27 | 25 | 27 | 26 | 23 | 25 | 26 | 25 | 27 | 28 | 26 | 27 | 28 | |
| Feels °C (?) | 30 | 31 | 31 | 30 | 31 | 31 | 30 | 31 | 29 | 30 | 30 | 28 | 28 | 28 | 29 | 28 | 30 | 30 | 29 | 30 | 32 | |
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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 Barriada Volcán wx 81 km from Backwash). 0.7m 11s groundswell from the SSW with a 0.5m 16s long period groundswell from the SW and a 0.3m 8s swell from the WSW. 3 swells combining to make bigger set waves.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Backwash surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Backwash Surf forecast
The above surf forecast table for Backwash provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Backwash can be found by selecting the local surf guide option on the grey menu. Our Backwash surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Backwash) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Backwash may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Golfo Dulce? If you are looking for accommodation near Backwash, camping, hotels and holiday cottages in Golfo Dulce, consider staying in Golfito which is 28 km (17 miles) away. Other places in and around Golfo Dulce where you can find information about places to rent, and car hire include Puerto Armuelles which is 48 km (30 miles) away, La Concepcion, Pedregal and David.
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