Surf Forecasts:
Ostional surf forecast from 6 Oct 2026:
- Best quality surf: Monday 12 Oct, 6PM (local time) - 4.5ft (1.3m), 17s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 12 Oct, 9PM (local time) - 4.5ft (1.3m), 17s period, SW swell with 1,050 kJ wave energy.
- Next surfable swell (1★+): Tuesday 6 Oct, 6PM (local time) - 2.5ft (0.8m), 12s period with SW swell.
Best Forecast Surf Conditions for Ostional this week:
The surf forecast for Ostional over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Oct 06) at 6PM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.6m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ostional in the next 16 days are 1.3m 17s and forecast to arrive on Monday (Oct 12) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Oct 12) at 9AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 6th Oct) | 2.5ft (0.8m) 12s |
| Best Surf | 6PM (Mon 12th Oct) | 4.5ft (1.3m) 17s |
| Most Powerful | 9PM (Mon 12th Oct) | 4.5ft (1.3m) 17s |
Table - best surf conditions forecast for Ostional over the next 16 days.
Short Range ForecastHeavy rain (total 49mm), heaviest during Thu night. Warm (max 30°C on Tue morning, min 25°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Sat night. Warm (max 29°C on Fri morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 6 | Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 13 | SW 13 | SW 20 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 18 | SW 18 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 202 | 196 | 186 | 318 | 311 | 575 | 737 | 719 | 683 | 485 | 466 | 398 | 437 | 375 | 257 | 553 | 492 | 365 | 452 | 871 | 907 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | cross-off | cross-off | off | glassy | cross-off | off | off | cross-off | cross-off | glassy | off | off | off | off | cross-off | off | cross-off |
High Tide | 10:39AM2.10m | 11:23PM2.14m | 11:50AM2.14m | 00:24AM2.28m | 12:49PM2.22m | 1:15AM2.41m | 1:40PM2.29m | 2:00AM2.51m | 2:25PM2.35m | 2:41AM2.57m | 3:07PM2.37m | 3:20AM2.58m | 3:46PM2.35m | ||||||||
Low Tide | 5:03PM0.51m | 5:39AM0.55m | 6:05PM0.44m | 6:41AM0.43m | 6:59PM0.37m | 7:33AM0.31m | 7:46PM0.31m | 8:18AM0.21m | 8:29PM0.27m | 9:00AM0.14m | 9:09PM0.26m | 9:39AM0.13m | 9:47PM0.28m | ||||||||
 |  |  |  | | | | | | | |  | | | | | |  | | | | |
 | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — |
 | — | 5:30 | — | — | 5:29 | — | — | 5:29 | — | — | 5:28 | — | — | 5:28 | — | — | 5:27 | — | — | 5:27 | — |
mm | — | 2 | 9 | — | 6 | 11 | — | 4 | 17 | — | — | — | — | 3 | 4 | — | 4 | 3 | — | 2 | 1 |
Temp °C | 30 | 30 | 27 | 30 | 30 | 27 | 29 | 29 | 26 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 26 | 29 | 29 | 26 |
Feels °C | 31 | 34 | 30 | 33 | 34 | 31 | 33 | 34 | 30 | 30 | 30 | 30 | 32 | 33 | 30 | 30 | 30 | 28 | 30 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 12 | SW 12 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 13 | SW 16 | SW 15 | SW 15 | SW 14 | SW 18 | SW 17 |
| kJ | 202 | 196 | 122 | 149 | 311 | 575 | 737 | 719 | 683 | 485 | 466 | 398 | 336 | 375 | 253 | 553 | 492 | 365 | 346 | 871 | 907 |
Swell 2 Height (m) Direction Period (s) | WNW 11 | WNW 11 | W 10 | SW 18 | SW 12 | SW 11 | WNW 9 | SW 21 | S 11 | SW 19 | W 10 | SW 18 | SW 18 | SW 13 | SW 16 | W 11 | W 11 | SW 19 | SW 18 | S 7 | S 8 |
| kJ | 123 | 121 | 75 | 318 | 112 | 63 | 28 | 162 | 57 | 369 | 66 | 304 | 437 | 168 | 257 | 57 | 59 | 236 | 452 | 37 | 118 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 8 | SW 20 | W 10 | W 10 | W 9 | S 7 | WNW 9 | WNW 9 | W 10 | SW 19 | S 6 | S 6 | S 6 | S 6 | S 8 | S 7 | S 7 | S 7 | WNW 10 | W 10 |
| kJ | 20 | 20 | 186 | 71 | 49 | 42 | 14 | 28 | 26 | 48 | 236 | 19 | 20 | 20 | 19 | 29 | 17 | 15 | 27 | 75 | 68 |
Wind waves Height (m) Direction Period (s) | — | SW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 3 | — | — |
| kJ | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 28 | 0 | 0 | 0 | 0 | 0 | 28 | 0 | 0 |
Best forecast wave conditions in Rivas Province | |||||||||||||||||||||
Best forecast wave conditions in Nicaragua | |||||||||||||||||||||
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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 16 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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