Kosai Water Temperature

(Today) 2024

22.7°C / 72.9°F

The water will feel warm (balmy). Most people will be OK with just bathers / swimming costume at this temperature. If you intend to stay in the water for a while a thin shorty wetsuit will suffice.

Current weather

15°C / 58°F
(clear sky)
Partly cloudy
Wind
18 mph
Humidity
55%

The measurements for the water temperature in Kosai, Shizuoka are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Kosai water temperature derived from many years of historical sea surface temperature data.

Kosai average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Kosai
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 13 12.5 12.6 14.5 16.8 19 23.5 24.8 23.1 21.3 17.5 14.7
Max °C 18.8 17.7 17.6 19.1 21.2 24.8 28 28.7 28.4 25.5 23.6 20.2
Min °F 57.7 56.6 56.7 59.9 64 68.5 76.1 78.2 75.7 72 65.9 60.6
Max °F 63.5 61.8 61.7 64.5 68.4 74.3 80.6 82.1 81 76.2 72 66.1

The warmest water temperature is in August with an average around 80.1°F / 26.7°C. The coldest month is February with an average water temperature of 59.2°F / 15.1°C.

7 day tide forecast for Kosai

ThuFriSatSunMonTueWed
  • Low 3:06am
    (0.28m)
  • High 10:03am
    (1.87m)
  • Low 3:19pm
    (1.32m)
  • High 8:28pm
    (1.72m)
  • Low 3:53am
    (0.47m)
  • High 11:02am
    (1.75m)
  • Low 4:31pm
    (1.34m)
  • High 9:26pm
    (1.56m)
  • Low 4:51am
    (0.65m)
  • High 12:15pm
    (1.69m)
  • Low 6:53pm
    (1.27m)
  • High 11:14pm
    (1.43m)
  • Low 6:05am
    (0.79m)
  • High 1:26pm
    (1.7m)
  • Low 8:14pm
    (1.09m)
  • High 1:26am
    (1.44m)
  • Low 7:26am
    (0.87m)
  • High 2:15pm
    (1.75m)
  • Low 8:57pm
    (0.89m)
  • High 2:44am
    (1.55m)
  • Low 8:31am
    (0.89m)
  • High 2:52pm
    (1.82m)
  • Low 9:32pm
    (0.7m)
  • High 3:38am
    (1.69m)
  • Low 9:21am
    (0.89m)
  • High 3:24pm
    (1.89m)
  • Low 10:04pm
    (0.53m)
7 day tide times for Kosai

*These tide times are estimates based on the nearest accurate location (Maisaka, Sizuoka, Japan) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.