Isla Santa Maria Surf Break

Isla Santa Maria Sea Temperature and Wetsuit Guide

Lat Long: 23.43° S 70.61° W

Issued: 1 pm 21 Jun 2026 (local time)

Forecast update in  hr  min

Today's Isla Santa Maria sea temperature is
17.5° C

Slightly warmer than usual

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

Today's Isla Santa Maria sea temperature is 17.5 °C

(Slightly warmer than usual)

Mean: 16.7 °C
Range: 15.6 °C to 19.2 °C
Statistics for 21 Jun (1981–2005)

    Today, many surfers would wear a summer wetsuit.

    The water temperature (17 °C) at Isla Santa Maria is relatively warm. If the sun does come out as forecast, it should feel warm enough to surf in a summer wetsuit. Effective air temperature of 13 °C.

    Chile Sea Water Temperature

    Map of current Chile
    Surface Water Temperatures

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

    Map of current Chile
    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 Isla Santa Maria. 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.

    Isla Santa Maria 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.

    Isla Santa Maria sea water temperatures peak in the range 20 to 24°C (68 to 75°F) on around the 7th of February and are at their minimum on about the 14th of August, in the range 15 to 18°C (59 to 64°F). Isla Santa Maria sea water temperatures are always warm reach their maximum in the first part of February. You'll need a 2mm neoprene top or a shorty at dawn/dusk or if it's windy. The minimum seasonal sea water temperatures at Isla Santa Maria in mid August lend themselves to a 4/3mm wetsuit or a 3/2mm suit and 3mm neoprene boots.

    Actual sea surface water temperatures close to shore at Isla Santa Maria 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 Isla Santa Maria. Refer to our detailed weather forecasts for this information.

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