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Surf Forecasts:
Rio Tulin surfForecast / Golfo de Nicoya / Costa Rica
48hr Weather and Surf, issued 11 am Monday 20 Apr 2026 CSTForecast update in hr min s Forecast update imminent
Rio Tulin surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rio Tulin sea temperature is
30.2° C
(Which is slightly warmer than usual)How big are the waves at Rio Tulin today?
The current surf forecast for Rio Tulin at 7PM is: 1.0m 17s primary swell from a South-southwest direction and 0.9m 13s secondary swell from a South-southwest direction (forecast issued at 11:00am April 20). The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Apr) | 3.5ft (1.0m) | 14s |
| Afternoon (20 Apr) | 3ft (0.9m) | 18s |
| Evening (20 Apr) | 3.5ft (1.0m) | 17s |
Table - waves today at Rio Tulin. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| 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 | 13 | 18 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 347 | 402 | 438 | 475 | 576 | 569 | 453 | 870 | 848 | 838 | 881 | 870 | 859 | 815 | 726 | 602 | 594 | 585 | 585 | 585 | 494 | 487 | 427 | 336 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross- on | glass | glass | glass | off | glass | cross- on | cross- on | cross- on | glass | glass | glass | off | glass | on | cross- on | on | glass | glass | glass | glass |
High Tide / height (m) | 4:53PM 2.99 | 5:27AM 2.70 | 5:43PM 2.87 | 6:19AM 2.60 | 6:36PM 2.70 | |||||||||||||||||||
Low Tide / height (m) | 10:40AM 0.14 | 11:15PM -0.02 | 11:29AM 0.22 | 12:05AM 0.09 | 12:23PM 0.36 | 1:00AM 0.25 | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| Sunrise | 5:26 | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:24 |
| Sunset | - | - | 5:47 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - |
 | | |  |  | | | | | | | | | | |  | |  | | | | | | | |
Rain (mm) | - | - | - | - | 1 | 1 | 1 | - | - | - | - | 1 | 4 | 1 | - | 1 | - | - | - | - | 1 | 4 | 3 | 5 |
| Temp. °C | 28 | 28 | 29 | 29 | 28 | 27 | 27 | 26 | 28 | 29 | 29 | 28 | 28 | 27 | 26 | 26 | 28 | 29 | 29 | 28 | 28 | 27 | 26 | 26 |
| Feels °C (?) | 30 | 30 | 30 | 32 | 32 | 31 | 31 | 29 | 32 | 31 | 30 | 31 | 32 | 31 | 29 | 28 | 31 | 31 | 30 | 31 | 32 | 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)
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