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Sukagawa, Japan climate

Cfa Humid subtropical

Sukagawa has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 29°C, while the coldest is January averaging around −3°C at night. Precipitation totals about 1144 mm a year and is strongly seasonal — July alone averages 191 mm while February barely receives 28 mm.

☀️ Summers
Warm
Highs near 29°C in August.
❄️ Winters
Cold
Lows near −3°C in January.
🌧️ Rain
Wet
About 1144 mm of rain a year.
Wettest in July
Sky & trend
Often cloudy
Cloudy skies 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 °C -10°10°20°30°40° PRECIPITATION (mm) 0100200 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: ~3.7 hours of sun/dayF: ~3.9 hours of sun/dayM: ~4.1 hours of sun/dayA: ~4.4 hours of sun/dayM: ~4.4 hours of sun/dayJ: ~3.3 hours of sun/dayJ: ~3.1 hours of sun/dayA: ~4.1 hours of sun/dayS: ~3.2 hours of sun/dayO: ~3.5 hours of sun/dayN: ~3.7 hours of sun/dayD: ~3.5 hours of sun/day JFMAMJJASOND Sun hours per day (est.)

Sukagawa climate normals (1991–2020)

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)561016222528292519148
Avg temp (°C)1151116202425201593
Avg low (°C)−3−20511162021171040
Precipitation (mm)41286675921211911441631265838
Jan – JunJanFebMarAprMayJun
Avg high (°C)5610162225
Avg temp (°C)115111620
Avg low (°C)−3−2051116
Precipitation (mm)4128667592121
Jul – DecJulAugSepOctNovDec
Avg high (°C)28292519148
Avg temp (°C)2425201593
Avg low (°C)2021171040
Precipitation (mm)1911441631265838

Sky & atmosphere

JanFebMarAprMayJunJulAugSepOctNovDec
Cloud cover (%)626365666977786974686363
Relative humidity (%)888582808083858486868788
Wind speed (km/h)9.610.310.29.68.26.66.16.16.87.17.58.7
Jan – JunJanFebMarAprMayJun
Cloud cover (%)626365666977
Relative humidity (%)888582808083
Wind speed (km/h)9.610.310.29.68.26.6
Jul – DecJulAugSepOctNovDec
Cloud cover (%)786974686363
Relative humidity (%)858486868788
Wind speed (km/h)6.16.16.87.17.58.7
Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Kooriyama, about 11 km from the city centre.

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 →