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Climate tables. Data for Niigata.


Monthly temperature

Month Record low Average low Average Average high Record high
january -8.1 (1984) 0.6 3.0 5.8 15.3 (1997)
february -11.0 (1978) 0.4 3.1 6.4 21.3 (2004)
march -4.6 (1984) 2.9 6.2 10.4 24.4 (2004)
april -1.0 (1978) 7.6 11.5 16.1 30.7 (1987)
may 3.7 (1991) 13.2 16.9 21.5 32.9 (1998)
june 10.0 (1979) 18.0 20.9 24.8 34.7 (2004)
july 13.0 (1976) 22.2 24.9 28.6 38.4 (2018)
august 15.0 (1976) 23.6 26.6 30.5 39.9 (2018)
september 9.0 (1976) 19.7 22.8 26.6 38.8 (2020)
october 3.0 (1983) 13.5 16.8 20.7 33.2 (2018)
november -0.6 (1983) 7.4 10.7 14.5 27.0 (1977)
december -6.8 (1983) 2.9 5.5 8.7 20.3 (1990)
год () ()
graphic

Monthly precipitation

Month Average Record low Record high Daily high
january 186 85 (2006) 385 (2002) 55 (2002)
february 122 47 (2019) 262 (1983) 60 (1961)
march 113 42 (2016) 207 (1921) 64 (1963)
april 92 21 (1994) 242 (1890) 61 (2007)
may 104 35 (1970) 215 (1985) 73 (1985)
june 128 18 (1927) 378 (1978) 146 (1978)
july 192 15 (1973) 512 (1958) 141 (1958)
august 141 4 (1985) 616 (1998) 165 (1967)
september 155 26 (1992) 378 (1897) 132 (1984)
october 160 16 (1977) 310 (1923) 77 (2004)
november 211 66 (2018) 416 (2013) 102 (1988)
december 217 68 (2019) 444 (2014) 78 (1962)
year () () ()
graphic

Number of days with solid, liquid, and mixed precipitation

Type of precipitation jan feb mar apr may jun jul aug sep oct nov dec Year

Wind speed, m/s

jan feb mar apr may jun jul aug sep oct nov dec Year

The frequency of different wind directions, %

direction jan feb mar apr may jun jul aug sep oct nov dec Year
graphic graphic graphic graphic

Air humidity, %

jan feb mar apr may jun jul aug sep oct nov dec Year

Snow cover

Month jul aug sep oct nov dec jan feb mar apr may jun Year
number of days
height (sm)  
max height (sm)

Cloudy, score

month jan feb mar apr may jun jul aug sep oct nov dec Year
total
low

Number of clear, cloudy and cloudy days

month jan feb mar apr may jun jul aug sep oct nov dec Year
Total cloud
Low cloud

Number of days with different phenomena

phenomenon jan feb mar apr may jun jul aug sep oct nov dec Year

The frequency of different types of clouds, %

type of clouds jan feb mar apr may jun jul aug sep oct nov dec Year