Ōtsu monthly weather averages

  • Average daytime temperature

    The bar chart below shows the average monthly peak daytime temperatures at Ōtsu

    Ōtsu average temperature chart
    Average monthly temperatures in Ōtsu (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 6.7 7.3 10.9 17.7 22.5 25.6 29.7 31.3 26.7 20.7 15.1 9.6
    °F 44.1 45.2 51.7 63.9 72.4 78.2 85.4 88.3 80 69.2 59.1 49.3

    Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

  • Average rainfall & rainy days

    The graph below shows the average rainfall and number of rainy days per month.

    Average monthly rainfall in Ōtsu (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 80 82 111 133 138 224 213 121 177 110 76 68
    inches 3.2 3.2 4.4 5.2 5.4 8.8 8.4 4.8 7 4.3 3 2.7
    Rainy days 22 22 21 17 15 18 19 17 18 15 16 19
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in Ōtsu

    Average daily sunshine Ōtsu
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 3.8 4 5.1 5.9 6.6 5 5.5 6.5 4.9 5.2 4.6 4.1
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in Ōtsu (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C -0.7 -0.3 1.9 7.5 12.3 17.4 21.8 22.7 18.6 11.7 6.1 1.4
    Max °C 6.9 7.5 11.2 18 22.7 25.9 29.9 31.5 26.9 20.9 15.3 9.8
    Min °F 30.7 31.5 35.3 45.4 54.1 63.2 71.2 72.9 65.4 53.1 43 34.5
    Max °F 37.6 38.5 43.7 54.9 63.5 70.9 78.4 80.8 72.9 61.3 51.3 42.1
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Ōtsu in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 14.6 13.3 13.1 14.4 17.4 21.1 24.5 27.1 25.7 22.6 19.8 17
    °F 58.3 55.9 55.6 58 63.3 69.9 76.2 80.8 78.2 72.7 67.7 62.6
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Ōtsu (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 10 10 10 10 9 9 8 9 8 8 9 9
    mph 6 7 7 6 6 5 5 5 5 5 5 6

    A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

  • Relative humidity

    The graph below shows the average relative humidity.

    Average relative humidity in Ōtsu
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    72% 72% 69% 68% 69% 74% 77% 74% 76% 75% 74% 74%

Other monthly averages

UV index

Ōtsu weather stats

Ōtsu weather statistics
Hottest month: August 31.3°C 88.3°F
Driest month: December 68mm 2.7ins
Sunniest month: August 6.5hrs
Coldest month: January 6.7°C 44.1°F
Wettest month: June 224mm 8.8ins
Warmest sea: August 27.1°C 80.8°F
Map showing location of Ōtsu (35.00444, 135.86833)

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