Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Tamarindo surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 5 am Saturday 13 Dec 2025 CSTForecast update in hr min s Forecast update imminent
Tamarindo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tamarindo sea temperature is
28.6° C
(Which is 1.7°C warmer than normal for this time of year)How big are the waves at Tamarindo today?
The current surf forecast for Tamarindo at 10AM is: 0.3m 13s primary swell from a Southwest direction and 0.3m 11s secondary swell from a South-southwest direction, 0.3m 4s secondary swell from a North direction (forecast issued at 05:00am December 13). An open ocean swell of 1.0m 7s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 1ft (0.3m) | 13s |
| Afternoon (13 Dec) | 1ft (0.3m) | 12s |
| Evening (13 Dec) | 3ft (0.9m) | 7s |
Table - waves today at Tamarindo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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) (?) | 11 | 11 | 13 | 11 | 12 | 7 | 7 | 16 | 16 | 16 | 7 | 7 | 7 | 12 | 7 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 41 | 40 | 25 | 23 | 23 | 82 | 79 | 79 | 91 | 67 | 63 | 23 | 62 | 34 | 60 | 75 | 104 | 75 | 75 | 76 | 77 | 60 | 41 | 91 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- off | cross- off | glass | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 9:18AM 1.90 | 9:51PM 2.12 | 10:21AM 1.83 | 10:46PM 2.10 | 11:22AM 1.82 | 11:38PM 2.11 | ||||||||||||||||||
Low Tide / height (m) | 3:19AM 0.66 | 3:26PM 0.64 | 4:21AM 0.67 | 4:23PM 0.71 | 5:19AM 0.65 | 5:19PM 0.74 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | - | 5:50 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:23 | - | - | - |
 |  |  |  | |  | | | | | | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | 1 | 1 | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 25 | 27 | 29 | 29 | 27 | 26 | 25 | 24 | 24 | 26 | 29 | 29 | 27 | 25 | 24 | 24 | 24 | 26 | 29 | 29 | 27 | 25 | 24 |
| Feels °C (?) | 28 | 28 | 29 | 30 | 31 | 29 | 27 | 26 | 25 | 26 | 27 | 31 | 33 | 31 | 27 | 25 | 26 | 25 | 26 | 29 | 29 | 28 | 24 | 25 |
- Map Icons:
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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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