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Ostional Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Ostional surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 11 am Tuesday 18 Nov 2025 CST
How big are the waves at Ostional today?
The current surf forecast for Ostional at 1PM is: 0.4m 16s primary swell from a Southwest direction and 0.5m 12s secondary swell from a Southwest direction (forecast issued at 11:00am November 18). An open ocean swell of 0.5m 8s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Nov) | 1.5ft (0.4m) | 16s |
| Afternoon (18 Nov) | 1.5ft (0.5m) | 16s |
| Evening (18 Nov) | 1.5ft (0.5m) | 15s |
Table - waves today at Ostional. (Swell directed towards the surf break)
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 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) (?) | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 91 | 90 | 124 | 121 | 113 | 139 | 106 | 174 | 104 | 104 | 104 | 169 | 167 | 162 | 158 | 151 | 116 | 88 | 87 | 85 | 96 | 93 | 93 | 91 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- on | cross- off | cross- off | off | cross- off | cross- off | cross- off | glass | glass | cross- on | glass | glass | off | off | off | glass | on | cross- on | cross- on | glass | glass | glass | glass |
High Tide / height (m) | 1:35PM 2.03 | 1:42AM 2.29 | 2:15PM 2.07 | 2:20AM 2.32 | 2:52PM 2.11 | 2:57AM 2.34 | ||||||||||||||||||
Low Tide / height (m) | 7:29AM 0.42 | 7:31PM 0.57 | 8:07AM 0.35 | 8:10PM 0.52 | 8:44AM 0.30 | 8:48PM 0.49 | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||||||||
| Sunrise | 5:37 | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - | - | 5:39 |
| Sunset | - | - | 5:16 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - |
 |  | |  | | | | | | | | | | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 27 | 28 | 27 | 26 | 26 | 25 | 24 | 24 | 26 | 28 | 28 | 26 | 25 | 24 | 24 | 24 | 26 | 27 | 27 | 26 | 25 | 25 | 24 | 24 |
| Feels °C (?) | 30 | 31 | 30 | 29 | 30 | 28 | 26 | 26 | 29 | 31 | 31 | 29 | 29 | 27 | 27 | 27 | 30 | 30 | 30 | 29 | 28 | 29 | 28 | 28 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ostional surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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