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Surf Forecasts:
Las Avellanas surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 5 pm Friday 05 Dec 2025 CSTForecast update in hr min s Forecast update imminent
Las Avellanas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Las Avellanas sea temperature is
28.1° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Las Avellanas today?
The current surf forecast for Las Avellanas at 1AM is: 0.4m 18s primary swell from a West-northwest direction and 0.5m 14s secondary swell from a Southwest direction (forecast issued at 05:00pm December 05). An open ocean swell of 0.7m 10s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Dec) | 1.5ft (0.5m) | 13s |
| Afternoon (06 Dec) | 2ft (0.6m) | 13s |
| Evening (06 Dec) | 1.5ft (0.5m) | 13s |
Table - waves today at Las Avellanas. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 05 | Saturday 06 | Sunday 07 | Monday 08 | |||||||||||||||||||||
| 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) (?) | 14 | 14 | 14 | 18 | 14 | 18 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 16 | 16 | 16 | 12 | 12 | 12 | 16 | 16 | 16 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 103 | 138 | 138 | 126 | 91 | 123 | 87 | 120 | 116 | 116 | 104 | 103 | 102 | 99 | 98 | 98 | 73 | 72 | 72 | 51 | 85 | 85 | 83 | 125 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | glass | off | off | off | cross- off | glass | cross- on | glass | cross- off | off | off | off | off | cross- on | cross | cross- off | cross- off | cross- off | off | off | glass | on |
High Tide / height (m) | 2:43PM 2.39 | 2:58AM 2.74 | 3:35PM 2.46 | 3:50AM 2.71 | 4:27PM 2.48 | 4:41AM 2.63 | ||||||||||||||||||
Low Tide / height (m) | 8:43PM 0.14 | 9:23AM -0.09 | 9:37PM 0.13 | 10:13AM -0.08 | 10:30PM 0.16 | 11:03AM -0.02 | ||||||||||||||||||
Friday 05 | Saturday 06 | Sunday 07 | Monday 08 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:48 | - | - |
| Sunset | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:21 | - | - | - | - | - | - | - |
 |  |  | | | | |  | | | |  | | | |  | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | 1 | 2 | 3 | 1 | 1 | - | - | - | 1 |
| Temp. °C | 29 | 26 | 26 | 25 | 24 | 23 | 26 | 28 | 27 | 26 | 25 | 24 | 24 | 24 | 26 | 27 | 27 | 26 | 25 | 25 | 24 | 24 | 26 | 27 |
| Feels °C (?) | 32 | 29 | 30 | 28 | 26 | 26 | 29 | 31 | 30 | 30 | 28 | 27 | 27 | 27 | 29 | 30 | 29 | 28 | 27 | 28 | 27 | 27 | 30 | 30 |
- 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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