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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).

☀️ Summers
Warm
Highs near 85°F in August.
❄️ Winters
Cold
Lows near 25°F in January.
🌧️ Rain
Very wet
About 79 in of rain a year.
Wettest in December
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 · 1991–2020 normals · hover a month for the exact figures TEMPERATURE °F 20°40°60°80° PRECIPITATION (in) 05.511 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
Jan – JunJanFebMarAprMayJun
Avg high (°F)363745587076
Avg temp (°F)313136475967
Avg low (°F)252529384959
Precipitation (in)9.46.15.03.84.25.0
Jul – DecJulAugSepOctNovDec
Avg high (°F)828577655240
Avg temp (°F)737668564435
Avg low (°F)676861483730
Precipitation (in)8.67.75.56.27.410.4

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 →