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:
Rio Tulin surfForecast / Golfo de Nicoya / Costa Rica
48hr Weather and Surf, issued 11 am Saturday 20 Dec 2025 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
28.3° C
(Which is slightly warmer than usual)How big are the waves at Rio Tulin today?
The current surf forecast for Rio Tulin at 2PM is: 0.5m 12s primary swell from a Southwest direction and 0.4m 7s secondary swell from a South-southwest direction (forecast issued at 11:00am December 20). The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Dec) | 1.5ft (0.4m) | 13s |
| Afternoon (20 Dec) | 1.5ft (0.5m) | 12s |
| Evening (20 Dec) | 1.5ft (0.5m) | 12s |
Table - waves today at Rio Tulin. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 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) (?) | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 57 | 65 | 65 | 77 | 75 | 152 | 203 | 199 | 183 | 176 | 167 | 161 | 161 | 161 | 126 | 126 | 123 | 121 | 119 | 90 | 90 | 82 | 82 | 74 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | cross- on | cross- off | cross- off | off | off | off | glass | on | on | glass | glass | off | off | off | glass | on | cross- on | cross- on | off | off | cross- off | cross- off |
High Tide / height (m) | 3:19PM 2.31 | 3:22AM 2.54 | 3:58PM 2.36 | 4:00AM 2.55 | 4:36PM 2.40 | 4:38AM 2.53 | ||||||||||||||||||
Low Tide / height (m) | 9:07AM 0.36 | 9:14PM 0.60 | 9:45AM 0.32 | 9:53PM 0.59 | 10:22AM 0.31 | 10:32PM 0.59 | ||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||||||
| Sunrise | 5:48 | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:50 |
| Sunset | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - |
 | | |  |  | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 27 | 27 | 27 | 27 | 26 | 25 | 24 | 24 | 26 | 27 | 27 | 26 | 26 | 24 | 24 | 23 | 25 | 26 | 27 | 26 | 25 | 24 | 23 | 23 |
| Feels °C (?) | 31 | 29 | 30 | 31 | 30 | 28 | 26 | 26 | 29 | 29 | 28 | 29 | 30 | 26 | 25 | 23 | 26 | 27 | 29 | 29 | 28 | 26 | 23 | 23 |
- 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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