Kaifu Rivermouth Surf Break

Kaifu Rivermouth Sea Temperature and Wetsuit Guide

Lat Long: 33.59° N 134.36° E

Issued: 2 pm 11 Jun 2026 (local time)

Forecast update in  hr  min

Today's Kaifu Rivermouth sea temperature is
23.0° C

Normal for this time of year

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

Today's Kaifu Rivermouth sea temperature is 23.0 °C

(Normal for this time of year)

Mean: 23.0 °C
Range: 22.0 °C to 24.0 °C
Statistics for 11 Jun (1981–2005)

    Today, many surfers would wear a shorty .

    Warm in and out of the water temperature at Kaifu Rivermouth today, but forecast to be overcast. With sea temperatures of 23 °C and a wind chill of 23 °C, most surfers will choose a shorty or a summer suit or just board shorts.

    Japan Sea Water Temperature

    Map of current Japan
    Surface Water Temperatures

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

    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 Kaifu Rivermouth. 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.

    Kaifu Rivermouth 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.

    Kaifu Rivermouth sea water temperatures peak in the range 27 to 29°C (81 to 84°F) on around the 21st of August and are at their lowest on about the 1st of March, in the range 16 to 18°C (61 to 64°F). Year round warm sea water temperatures at Kaifu Rivermouth climb to their warmest in mid to late August. Even then a rash vest and board shorts should be fine for surfing at any time of year. The lowest seasonal sea water temperatures at Kaifu Rivermouth at the beginning of March 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 Kaifu Rivermouth 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 Kaifu Rivermouth. Refer to our detailed weather forecasts for this information.

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