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Shinjō, Japan climate

Cfa Humid subtropical

Shinjō has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 85°F, while the coldest is January averaging around 25°F at night. Around 79 inches of precipitation falls each year, peaking in December (10.4 inches) and easing off in April (3.8 inches). Snowfall is heavy (252 inches of snow per year on average).

☀️ Summers
Warm
Highs near 85°F in August.
❄️ Winters
Cold
Lows near 25°F in January.
🌧️ Rain & snow
Very wet
About 79 in of rain a year, plus 252 in of snow.
Snow falls through the winter months
Sky & trend
Often grey
Overcast skies dominate much of the year.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figures TEMPERATURE °F 20°40°60°80° PRECIPITATION (in) 05.511 RainSnow JanAprJulOct

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER) 0h2h3h4h6h J: ~2.2 hours of sun/dayF: ~2.6 hours of sun/dayM: ~3.1 hours of sun/dayA: ~3.8 hours of sun/dayM: ~4.2 hours of sun/dayJ: ~3.4 hours of sun/dayJ: ~2.9 hours of sun/dayA: ~3.9 hours of sun/dayS: ~3.0 hours of sun/dayO: ~3.0 hours of sun/dayN: ~2.6 hours of sun/dayD: ~2.0 hours of sun/day JFMAMJJASOND Sun hours per day (est.)

Shinjō climate normals (1991–2020)

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°F)363745587076828577655240
Avg temp (°F)313136475967737668564435
Avg low (°F)252529384959676861483730
Precipitation (in)9.46.15.03.84.25.08.67.75.56.27.410.4
Snowfall (in)91.765.030.32.44.758.3
Jan – JunJanFebMarAprMayJun
Avg high (°F)363745587076
Avg temp (°F)313136475967
Avg low (°F)252529384959
Precipitation (in)9.46.15.03.84.25.0
Snowfall (in)91.765.030.32.4
Jul – DecJulAugSepOctNovDec
Avg high (°F)828577655240
Avg temp (°F)737668564435
Avg low (°F)676861483730
Precipitation (in)8.67.75.56.27.410.4
Snowfall (in)4.758.3

Sky & atmosphere

JanFebMarAprMayJunJulAugSepOctNovDec
Cloud cover (%)777573717177807176727479
Relative humidity (%)918984808183868483838690
Wind speed (mph)6.97.46.14.33.12.72.52.73.13.64.25.5
Jan – JunJanFebMarAprMayJun
Cloud cover (%)777573717177
Relative humidity (%)918984808183
Wind speed (mph)6.97.46.14.33.12.7
Jul – DecJulAugSepOctNovDec
Cloud cover (%)807176727479
Relative humidity (%)868483838690
Wind speed (mph)2.52.73.13.64.25.5
Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Shinjo, inside the city.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →