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Surf Forecasts:
Rio Tulin surfForecast / Golfo de Nicoya / Costa Rica
48hr Weather and Surf, issued 11 am Wednesday 17 Sep 2025 CST
How big are the waves at Rio Tulin today?
The current surf forecast for Rio Tulin at 1PM is: 1.4m 16s primary swell from a South-southwest direction and 0.6m 7s secondary swell from a West-southwest direction (forecast issued at 11:00am September 17). The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 4.5ft (1.4m) | 16s |
| Afternoon (17 Sep) | 4.5ft (1.3m) | 16s |
| Evening (17 Sep) | 4.5ft (1.3m) | 15s |
Table - waves today at Rio Tulin. (Swell directed towards the surf break)
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 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) (?) | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 991 | 991 | 848 | 693 | 665 | 568 | 508 | 508 | 501 | 494 | 413 | 396 | 318 | 282 | 277 | 273 | 273 | 269 | 269 | 321 | 212 | 202 | 196 | 190 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | cross- on | cross- off | off | glass | glass | glass | cross | cross- on | on | cross- on | cross | cross- on | glass | cross- off | cross- on | cross- on | cross- on | cross- on | cross | glass | glass | glass |
High Tide / height (m) | 10:55AM 2.27 | 11:45PM 2.21 | 12:07PM 2.31 | 12:47AM 2.34 | 1:05PM 2.40 | 1:37AM 2.48 | ||||||||||||||||||
Low Tide / height (m) | 5:24PM 0.61 | 5:53AM 0.73 | 6:28PM 0.55 | 6:55AM 0.62 | 7:20PM 0.46 | |||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | 5:26 | - | - | - | - | - | - | 5:26 | - | - | - | - | - | - | - | 5:26 | - | - | - | - | - | - | - | 5:26 |
| Sunset | - | - | 5:37 | - | - | - | - | - | - | - | 5:36 | - | - | - | - | - | - | - | 5:36 | - | - | - | - | - |
 |  | |  |  |  |  |  | | | | | |  | |  | | | | | | | | | |
Rain (mm) | - | 1 | 2 | 3 | 4 | - | 1 | 1 | 1 | 2 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 26 | 27 | 26 | 26 | 24 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 |
| Feels °C (?) | 30 | 31 | 30 | 30 | 28 | 29 | 29 | 29 | 30 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 31 | 30 | 31 | 30 | 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 de Nicoya
The cross-on wind has turned onshore at Rio Tulin (light winds from the SW.(Wind varies from 200 to 270 degs) at Juan Santamaria Airport 63 km from Rio Tulin). 1.1m 15s groundswell from the SSW with a 0.6m 6s windswell from the WSW and a 0.5m 6s windswell from the SSW. 3 swells combining to make bigger set waves.
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