Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Damas Rivermouth surfForecast / Golfo de Nicoya / Costa Rica
48hr Weather and Surf, issued 5 am Wednesday 17 Dec 2025 CSTForecast update in hr min s Forecast update imminent
Damas Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Damas Rivermouth sea temperature is
28.4° C
(Which is slightly warmer than usual)How big are the waves at Damas Rivermouth today?
The current surf forecast for Damas Rivermouth at 8AM is: 0.4m 15s primary swell from a Southwest direction and 0.6m 6s secondary swell from a South-southwest direction, 0.4m 12s secondary swell from a South-southwest direction (forecast issued at 05:00am December 17). The wind direction is predicted to be glassy.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 1.5ft (0.4m) | 15s |
| Afternoon (17 Dec) | 1.5ft (0.4m) | 11s |
| Evening (17 Dec) | 1.5ft (0.5m) | 13s |
Table - waves today at Damas Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| 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 | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 15 | 15 | 15 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 134 | 104 | 75 | 75 | 39 | 55 | 84 | 109 | 111 | 111 | 87 | 87 | 61 | 84 | 58 | 53 | 52 | 52 | 52 | 52 | 51 | 51 | 50 | 50 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | glass | cross- on | on | glass | glass | cross- off | off | cross- off | glass | cross- on | cross- on | glass | glass | cross- off | cross- off | off | glass | cross- on | on | glass | glass | cross- off |
High Tide / height (m) | 1:09PM 2.10 | 1:14AM 2.37 | 1:53PM 2.16 | 1:56AM 2.42 | 2:34PM 2.23 | |||||||||||||||||||
Low Tide / height (m) | 6:59AM 0.57 | 7:03PM 0.75 | 7:42AM 0.48 | 7:46PM 0.69 | 8:22AM 0.41 | 8:28PM 0.63 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| Sunrise | - | 5:46 | - | - | - | - | - | - | - | 5:46 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:21 | - | - | - |
 |  | | | |  |  |  | | | | | | | | | | | | | | | | | |
Rain (mm) | 1 | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 27 | 27 | 27 | 26 | 25 | 24 | 23 | 22 | 26 | 28 | 27 | 26 | 25 | 24 | 24 | 23 | 26 | 27 | 27 | 25 | 25 | 24 |
| Feels °C (?) | 26 | 26 | 30 | 29 | 30 | 30 | 29 | 27 | 25 | 22 | 29 | 30 | 29 | 30 | 28 | 26 | 26 | 24 | 28 | 28 | 29 | 28 | 28 | 26 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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