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Ostional Surf Forecast
/ Rivas Province (9 surf breaks) /
Surf Forecasts:
Ostional surfForecast / Rivas Province / Nicaragua
12 Day Weather and Surf, issued 11 pm Tuesday 19 Aug 2025 CST
Best Forecast Surf Conditions for Ostional this week:
The surf forecast for Ostional over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 20) at 3AM. The primary swell is predicted to be 0.7m and 15s period with a secondary swell of 0.6m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Ostional in the next 12 days are 1.2m 17s and forecast to arrive on Tuesday (Aug 26) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Aug 22) at 6PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 20th Aug) | 2.5ft (0.7m) 15s |
| Best Surf | 6AM (Sun 24th Aug) | 4.5ft (1.3m) 8s |
| Most Powerful | 6AM (Tue 26th Aug) | 4ft (1.2m) 17s |
Table - best surf conditions forecast for Ostional over the next 12 days.
Short Range Forecast Moderate rain (total 11mm), heaviest on Wed afternoon. Warm (max 30°C on Thu morning, min 25°C on Tue night). Winds increasing (calm on Wed morning, fresh winds from the ENE by Fri afternoon). | Days 3-6 Weather Summary Heavy rain (total 82mm), heaviest during Sun afternoon. Warm (max 29°C on Sat morning, min 24°C on Sun afternoon). Wind will be generally light. | |||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 16 | 15 | 14 | 14 | 14 | 14 | 18 | 14 | 16 | 16 | 15 | 15 | 14 | 8 | 8 | 20 | 19 | 18 | 17 | 16 | 16 | |
Wave (?)Graph  | ||||||||||||||||||||||
| Energy (?) | 370 | 309 | 333 | 323 | 343 | 378 | 390 | 420 | 391 | 469 | 341 | 387 | 368 | 527 | 358 | 785 | 894 | 977 | 779 | 922 | 820 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | glass | cross- off | cross- off | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | off | off | glass | off | off | off | |
High Tide / height (m) | 11:40PM 1.95 | 12:03PM 2.23 | 12:47AM 2.05 | 1:05PM 2.28 | 1:43AM 2.18 | 1:59PM 2.35 | 2:32AM 2.31 | 2:46PM 2.39 | 3:15AM 2.41 | 3:28PM 2.41 | 3:54AM 2.47 | 4:08PM 2.39 | 4:31AM 2.49 | 4:47PM 2.34 | ||||||||
Low Tide / height (m) | 5:43AM 0.60 | 6:34PM 0.43 | 6:50AM 0.53 | 7:30PM 0.34 | 7:48AM 0.44 | 8:18PM 0.26 | 8:38AM 0.36 | 9:01PM 0.21 | 9:22AM 0.30 | 9:41PM 0.19 | 10:04AM 0.28 | 10:18PM 0.21 | 10:43AM 0.28 | |||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | ||||||||||||||||
| Sunrise | - | 5:33 | - | - | 5:33 | - | - | 5:33 | - | - | 5:33 | - | - | 5:33 | - | - | 5:33 | - | - | 5:33 | - | |
| Sunset | - | - | 5:59 | - | - | 5:59 | - | - | 5:58 | - | - | 5:58 | - | - | 5:57 | - | - | 5:57 | - | - | 5:55 | |
 |  |  | | | |  |  | |  | | | | | |  | | | | | | ||
Rain (mm) | 2 | - | 4 | 1 | - | 1 | - | 1 | 2 | 5 | - | - | - | 1 | 43 | 32 | - | 1 | 3 | - | - | |
| Temp. °C | 27 | 29 | 29 | 27 | 30 | 30 | 27 | 30 | 28 | 26 | 29 | 29 | 27 | 28 | 25 | 25 | 28 | 28 | 26 | 28 | 28 | |
| Feels °C (?) | 32 | 34 | 34 | 30 | 31 | 32 | 31 | 31 | 27 | 29 | 31 | 30 | 29 | 29 | 30 | 29 | 32 | 32 | 29 | 27 | 28 | |
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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 Rivas Province
Continuing clean conditions at Ostional (light winds from the S.(Wind varies from 160 to 230 degs) at Liberia/Tomas Guardia Airport 59 km from Ostional). 0.6m 15s groundswell from the SW with a 0.5m 6s windswell from the SSW and a 0.5m 12s groundswell, also from the SSW. 3 swells combining to make bigger set waves.
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.
Information about the Ostional Surf forecast
The above surf forecast table for Ostional provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Ostional can be found by selecting the local surf guide option on the grey menu. Our Ostional surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ostional) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Ostional may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Ostional is 21 km (13 miles) from San Juan del Sur. If you plan a holiday in Rivas Province, look for hotels and other accommodation in San Juan del Sur. San Juan del Sur has rooms for a wide range of budgets as well as car hire and transport links.
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