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Guiones Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Guiones surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 5 pm Wednesday 17 Sep 2025 CST
How big are the waves at Guiones today?
The current surf forecast for Guiones at 7PM is: 1.2m 15s primary swell from a Southwest direction and 0.8m 15s secondary swell from a South-southwest direction (forecast issued at 05:00pm September 17). The wind direction is predicted to be cross-shore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | - | - |
| Afternoon (17 Sep) | 4.5ft (1.3m) | 15s |
| Evening (17 Sep) | 3.5ft (1.1m) | 14s |
Table - waves today at Guiones. (Swell directed towards the surf break)
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 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 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 733 | 720 | 529 | 672 | 395 | 390 | 395 | 390 | 384 | 368 | 443 | 357 | 309 | 299 | 295 | 290 | 199 | 190 | 193 | 159 | 159 | 152 | 164 | 164 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross | cross | cross | glass | cross- on | cross- on | cross- on | cross | cross- off | cross- off | glass | glass | glass | on | cross- on | glass | glass | glass | glass | glass | glass | on |
High Tide / height (m) | 11:34PM 1.80 | 11:57AM 1.90 | 12:37AM 1.90 | 12:56PM 1.96 | 1:27AM 2.02 | |||||||||||||||||||
Low Tide / height (m) | 5:15PM 0.49 | 5:43AM 0.58 | 6:19PM 0.44 | 6:46AM 0.50 | 7:11PM 0.38 | 7:37AM 0.41 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:31 | - | - | - | - | - | - | - | 5:31 | - | - | - | - | - | - | - | 5:31 | - | - |
| Sunset | 5:42 | - | - | - | - | - | - | - | 5:40 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - | - |
 |  | | | |  | | | |  | | | |  | | | | | |  | | | | | |
Rain (mm) | 2 | 1 | 2 | 1 | 2 | 2 | 2 | 2 | 1 | - | - | - | - | - | - | - | 1 | - | - | - | 1 | 1 | - | 2 |
| Temp. °C | 27 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 27 | 27 |
| Feels °C (?) | 30 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 28 | 29 | 28 | 28 | 29 | 29 | 30 | 30 | 30 | 30 | 31 | 31 | 29 | 29 | 32 | 30 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Guanacaste
Continuing clean conditions at Guiones (light winds from the E at DanielOduberInt. Airport 75 km from Guiones). 0.9m 14s groundswell from the SW with a 0.8m 15s groundswell from the SSW and a 0.5m 7s swell from the SW. 3 swells combining to make bigger set waves.
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