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 pm Monday 15 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
28.4° C
(Which is 1.4°C warmer than normal for this time of year)How big are the waves at Tamarindo today?
The current surf forecast for Tamarindo at 11PM is: 0.4m 16s primary swell from a Southwest direction and 0.7m 6s secondary swell from a South-southwest direction (forecast issued at 05:00pm December 15). An open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | - | - |
| Afternoon (15 Dec) | 1.5ft (0.4m) | 15s |
| Evening (15 Dec) | 2.5ft (0.8m) | 6s |
Table - waves today at Tamarindo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 15 | 6 | 16 | 16 | 16 | 13 | 13 | 13 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 77 | 83 | 55 | 91 | 127 | 91 | 62 | 62 | 62 | 95 | 134 | 171 | 171 | 134 | 134 | 104 | 73 | 109 | 109 | 142 | 111 | 111 | 111 | 111 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | cross- off | off | off | off | off | off | off | off | cross- on | cross- on | cross | glass | off | off |
High Tide / height (m) | 11:38PM 2.11 | 12:16PM 1.84 | 12:26AM 2.13 | 1:05PM 1.88 | 1:11AM 2.18 | |||||||||||||||||||
Low Tide / height (m) | 5:19PM 0.74 | 6:11AM 0.59 | 6:10PM 0.72 | 6:58AM 0.52 | 6:58PM 0.68 | 7:41AM 0.45 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:54 | - | - |
| Sunset | 5:23 | - | - | - | - | - | - | - | 5:23 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - |
 |  | | |  |  | | | |  | | | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 27 | 29 | 29 | 27 | 26 | 25 | 24 | 23 | 26 | 29 | 29 | 27 | 25 | 24 | 24 | 24 | 26 | 29 | 28 | 26 | 26 | 25 | 23 | 23 |
| Feels °C (?) | 28 | 29 | 29 | 28 | 26 | 26 | 26 | 25 | 25 | 30 | 30 | 29 | 26 | 25 | 26 | 26 | 27 | 31 | 30 | 29 | 29 | 29 | 24 | 24 |
- 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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