Kojima Water Temperature and Wetsuit Guide
(Kyu Shu, Japan)
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Today's Kojima sea temperature is 22.8 °C
(Which is slightly cooler than normal)
| Mean: | 23.3 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Range: | 22.2 °C to 24.3 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statistics for 20 May (1981–2005) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Today, many surfers would wear a rashvest wetsuit.
Very warm air temperatures and warm water(22 °C) too at Kojima, warm enough for wearing board shorts and a rash vest in the surf. Cloudy, but feeling very pleasant in and out of the water.
Map of current Japan Surface Water Temperatures based on measurements from oceanographic satellites |
Map of current Japan 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 Kojima. 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.
Kojima sea water temperatures peak in the range 27 to 30°C (81 to 86°F) on around the 3rd of August and are at their minimum on about the 1st of March, in the range 18 to 20°C (64 to 68°F). Year round warm sea water temperatures at Kojima climb to their maximum at the start of August. Even then a rash vest and board shorts should be fine for surfing at any time of year. The minimum Kojima sea water temperatures at the beginning of March require something like a 3/2mm fully sealed wetsuit.
Actual sea surface water temperatures close to shore at Kojima 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 Kojima. Refer to our detailed weather forecasts for this information.
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