Today's Hierro sea temperature is 23.9 °C
(1.1° warmer than normal for this time of year)
| Mean: | 22.8 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Range: | 21.8 °C to 23.6 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statistics for 17 Sep (1981–2005) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Today, many surfers would wear a shorty .
Warm in and out of the water temperature at Hierro today, but forecast to be overcast. With sea temperatures of 23 °C and a wind chill of 21 °C, most surfers will choose a shorty or a summer suit or just board shorts.
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Below is a graph of Historical Sea Surface Temperature for Hierro. 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.

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.
Hierro sea water temperatures peak in the range 22 to 24°C (72 to 75°F) on around the 12th of September and are at their lowest on about the 24th of February, in the range 17 to 20°C (63 to 68°F). Hierro sea water temperatures are always warm reach their warmest in the second week of September. You'll need a 2mm neoprene top or a shorty at dawn/dusk or if it's windy. The lowest Hierro sea water temperatures in the fourth week of February require something like a 3/2mm fully sealed wetsuit.
Actual sea surface water temperatures close to shore at Hierro 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 Hierro. Refer to our detailed weather forecasts for this information.


