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Damas Rivermouth Surf Forecast
/ Golfo de Nicoya (40 surf breaks) /
Surf Forecasts:
Damas Rivermouth surfForecast / Golfo de Nicoya / Costa Rica
48hr Weather and Surf, issued 11 am Thursday 18 Sep 2025 CST
How big are the waves at Damas Rivermouth today?
The current surf forecast for Damas Rivermouth at 1PM is: 1.1m 14s primary swell from a South-southwest direction and 0.6m 7s secondary swell from a South direction, 0.6m 6s secondary swell from a West-southwest direction (forecast issued at 11:00am September 18). The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 3.5ft (1.1m) | 14s |
| Afternoon (18 Sep) | 3.5ft (1.1m) | 14s |
| Evening (18 Sep) | 3.5ft (1.0m) | 13s |
Table - waves today at Damas Rivermouth. (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 452 | 433 | 421 | 408 | 336 | 336 | 336 | 331 | 326 | 321 | 242 | 361 | 235 | 224 | 263 | 258 | 258 | 254 | 258 | 167 | 206 | 161 | 121 | 193 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | glass | glass | glass | glass | glass | glass | glass | cross- on | cross- on | glass | glass | glass | glass | glass | glass | cross- on | cross- on | glass | glass | glass | glass | glass |
High Tide / height (m) | 12:01PM 2.28 | 12:42AM 2.31 | 1:00PM 2.36 | 1:31AM 2.45 | 1:48PM 2.45 | 2:12AM 2.57 | ||||||||||||||||||
Low Tide / height (m) | 6:22PM 0.54 | 6:50AM 0.62 | 7:14PM 0.46 | 7:40AM 0.49 | 7:58PM 0.38 | |||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| Sunrise | 5:26 | - | - | - | - | - | - | 5:26 | - | - | - | - | - | - | - | 5:26 | - | - | - | - | - | - | - | 5:26 |
| Sunset | - | - | 5:36 | - | - | - | - | - | - | - | 5:35 | - | - | - | - | - | - | - | 5:34 | - | - | - | - | - |
 | | |  |  | |  |  |  | | |  | | | | | | | | | | |  | | |
Rain (mm) | 2 | 5 | 5 | 2 | 1 | 1 | - | - | - | - | 1 | - | - | - | - | - | - | - | 1 | 1 | 2 | 1 | - | - |
| Temp. °C | 26 | 26 | 24 | 24 | 25 | 24 | 25 | 25 | 26 | 28 | 27 | 26 | 26 | 25 | 25 | 25 | 27 | 28 | 28 | 27 | 26 | 26 | 25 | 25 |
| Feels °C (?) | 30 | 29 | 28 | 28 | 29 | 28 | 29 | 29 | 31 | 32 | 31 | 31 | 31 | 29 | 29 | 29 | 31 | 31 | 31 | 32 | 31 | 31 | 29 | 29 |
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Break
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 de Nicoya
Light wind has turned cross-on at Damas Rivermouth (light winds from the WSW at JuanSantamariaInt. Airport 57 km from Damas Rivermouth). 0.9m 14s groundswell from the SSW with a 0.6m 8s swell, also from the SSW and a 0.6m 10s swell, also from the SW as well as a 0.6m 6s windswell, also from the WSW. 4 swells combining to make bigger set waves.
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