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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 5 am Tuesday 16 Sep 2025 CST
How big are the waves at Damas Rivermouth today?
The current surf forecast for Damas Rivermouth at 11AM is: 1.5m 15s primary swell from a South-southwest direction and 0.6m 7s secondary swell from a South direction (forecast issued at 05:00am September 16). The wind direction is predicted to be onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Sep) | 5ft (1.5m) | 16s |
| Afternoon (16 Sep) | 5ft (1.5m) | 15s |
| Evening (16 Sep) | 3.5ft (1.1m) | 14s |
Table - waves today at Damas Rivermouth. (Swell directed towards the surf break)
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| 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) (?) | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 17 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1230 | 1081 | 1054 | 962 | 949 | 936 | 501 | 433 | 859 | 1003 | 1051 | 815 | 784 | 763 | 763 | 752 | 602 | 465 | 452 | 433 | 421 | 342 | 336 | 336 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- off | glass | on | cross- on | glass | glass | cross- on | cross | glass | glass | cross- on | cross- on | cross- off | cross- on | cross | cross- on | cross | cross- on | cross- on | on | glass | glass | glass |
High Tide / height (m) | 9:31AM 2.28 | 10:23PM 2.11 | 10:50AM 2.23 | 11:40PM 2.18 | 12:01PM 2.28 | |||||||||||||||||||
Low Tide / height (m) | 3:11AM 0.72 | 4:04PM 0.62 | 4:32AM 0.77 | 5:19PM 0.61 | 5:48AM 0.72 | 6:22PM 0.54 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| Sunrise | - | 5:26 | - | - | - | - | - | - | - | 5:26 | - | - | - | - | - | - | - | 5:26 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:36 | - | - | - | - | - | - | - | 5:36 | - | - | - |
 |  |  |  | |  | | | | | | | |  |  | | |  |  | | |  | | | |
Rain (mm) | - | - | - | 1 | 2 | 2 | 7 | 6 | 4 | 1 | - | 1 | 3 | 7 | 2 | 2 | 3 | 1 | 1 | 1 | - | 1 | 1 | 1 |
| Temp. °C | 26 | 26 | 28 | 28 | 28 | 27 | 26 | 25 | 25 | 25 | 27 | 27 | 27 | 25 | 24 | 24 | 24 | 24 | 25 | 26 | 26 | 25 | 25 | 24 |
| Feels °C (?) | 30 | 30 | 33 | 32 | 32 | 33 | 31 | 29 | 29 | 30 | 32 | 30 | 31 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 29 | 29 | 30 | 28 |
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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 de Nicoya
The wind is still cross-off at Damas Rivermouth (light winds from the ENE at San Jose 57 km from Damas Rivermouth). 1.3m 15s groundswell from the SSW with a 0.5m 6s windswell, also from the SSW. 2 swells combining to make bigger set waves.
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