Ostional Surf Break

Ostional Sea Temperature and Wetsuit Guide

Lat Long: 11.10° N 85.76° W

Issued: 5 am 09 Jun 2026 (local time)

Forecast update in  hr  min

Today's Ostional sea temperature is
29.5° C

Slightly warmer than usual

Ostional surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Ostional sea temperature is 29.5 °C

(Slightly warmer than usual)

Mean: 28.7 °C
Range: 27.9 °C to 30.1 °C
Statistics for 09 Jun (1981–2005)

    Today, many surfers would wear a rashvest wetsuit.

    Very warm air temperatures and very warm water(29 °C) too at Ostional, warm enough for wearing board shorts and a rash vest in the surf. Cloudy, but feeling very pleasant in and out of the water.

    Nicaragua Sea Water Temperature

    Map of current Nicaragua
    Surface Water Temperatures

    (based on measurements from oceanographic satellites)
    Nicaragua Water Temperature Anomaly

    Map of current Nicaragua
    Sea Water Temperature Anomalies

    (compared with long term averages
    at this time of year)

    click thumbnails to expand

    Below is a graph of Historical Sea Surface Temperature for Ostional. This has been derived from analysis of two decades of oceanographic satellite measurements of nearby open water. We have calculated the average water temperature variation around the year as well as the extremes that have been observed on each date.

    Ostional Water Temperature Graph

    All of the graphs for the surf breaks presented on Surf-Forecast.com are on the same scale to enable comparison between locations around the world.

    Ostional sea temperatures peak in the range 28 to 30°C (82 to 86°F) on around the 15th of May and are at their coldest on about the 4th of February, in the range 24 to 28°C (75 to 82°F). Year round warm sea temperatures at Ostional mean that a rash vest and board shorts should be fine for surfing at any time of year

    Actual sea surface water temperatures close to shore at Ostional can vary by several degrees compared with these open water averages. This is especially true after heavy rain, close to river mouths or after long periods of strong offshore winds. Offshore winds cause colder deep water to replace surface water that has been warmed by the sun. Air temperature, wind-chill and sunshine should also be considered before deciding on the kind of wetsuit needed to stay warm when surfing at Ostional. Refer to our detailed weather forecasts for this information.

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