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Diria Surf Forecast
/ Guanacaste (28 surf breaks) /
Diria surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 11 am Monday 18 Aug 2025 CST
How big are the waves at Diria today?
The current surf forecast for Diria at 2PM is: 0.6m 17s primary swell from a Southwest direction (forecast issued at 11:00am August 18). An open ocean swell of 0.6m 6s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 2ft (0.6m) | 18s |
| Afternoon (18 Aug) | 2ft (0.6m) | 17s |
| Evening (18 Aug) | 3.5ft (1.0m) | 16s |
Table - waves today at Diria. (Swell directed towards the surf break)
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||||||||
| 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) (?) | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 312 | 479 | 307 | 297 | 538 | 366 | 353 | 480 | 432 | 447 | 385 | 330 | 287 | 321 | 642 | 376 | 430 | 420 | 429 | 422 | 404 | 422 | 419 | 408 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | cross- on | cross | cross- off | glass | glass | cross- off | glass | cross- on | cross- on | cross- on | cross- off | glass | glass | glass | glass | cross | on | on | glass | glass | glass | off |
High Tide / height (m) | 9:41AM 2.23 | 10:25PM 1.91 | 10:53AM 2.19 | 11:40PM 1.95 | 12:03PM 2.21 | 12:47AM 2.05 | ||||||||||||||||||
Low Tide / height (m) | 4:15PM 0.50 | 4:29AM 0.61 | 5:28PM 0.49 | 5:44AM 0.60 | 6:33PM 0.42 | |||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||||||||
| Sunrise | 5:33 | - | - | - | - | - | - | 5:33 | - | - | - | - | - | - | - | 5:33 | - | - | - | - | - | - | - | 5:33 |
| Sunset | - | - | - | 6:00 | - | - | - | - | - | - | 5:59 | - | - | - | - | - | - | - | 5:59 | - | - | - | - | - |
 | |  | |  |  | | |  | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | 1 | 3 | - | - | - | - | - | 1 | 2 | 1 | 2 | - | 2 | 1 | - | 2 | 1 | 2 | 1 | - | - | - |
| Temp. °C | 26 | 28 | 27 | 26 | 26 | 25 | 25 | 25 | 27 | 28 | 28 | 27 | 26 | 26 | 25 | 25 | 27 | 28 | 28 | 27 | 27 | 26 | 26 | 25 |
| Feels °C (?) | 31 | 32 | 30 | 29 | 30 | 29 | 29 | 29 | 31 | 31 | 31 | 30 | 29 | 30 | 29 | 29 | 31 | 32 | 31 | 31 | 32 | 31 | 31 | 29 |
- 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 Diria (light winds from the S at Liberia/Tomas Guardia Airport 45 km from Diria). 0.5m 14s groundswell from the SW with a 0.4m 17s long period groundswell, also from the SW. 2 swells combining to make bigger set waves.
45 km away, 2 h 19 min ago
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