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Hakodate, Japan climate

Cfa Humid subtropical

Hakodate has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 26°C, while the coldest is January averaging around −6°C at night. Around 1188 mm of precipitation falls each year, peaking in August (156 mm) and easing off in March (64 mm). Snowfall is heavy (305 cm of snow per year on average).

☀️ Summers
Warm
Highs near 26°C in August.
❄️ Winters
Cold
Lows near −6°C in January.
🌧️ Rain & snow
Wet
About 1188 mm of rain a year, plus 305 cm 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 °C -10°10°20°30° PRECIPITATION (mm) 080160 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: ~0.9 hours of sun/dayF: ~1.4 hours of sun/dayM: ~2.7 hours of sun/dayA: ~4.3 hours of sun/dayM: ~4.4 hours of sun/dayJ: ~4.1 hours of sun/dayJ: ~3.3 hours of sun/dayA: ~3.8 hours of sun/dayS: ~3.6 hours of sun/dayO: ~3.2 hours of sun/dayN: ~1.7 hours of sun/dayD: ~1.0 hours of sun/day JFMAMJJASOND Sun hours per day (est.)

Hakodate climate normals (1991–2020)

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)12612172024262317103
Avg temp (°C)−2−22712162022191360
Avg low (°C)−6−6−2381317191582−4
Precipitation (mm)77646472898012415615010611195
Snowfall (cm)91744121879
Jan – JunJanFebMarAprMayJun
Avg high (°C)126121720
Avg temp (°C)−2−2271216
Avg low (°C)−6−6−23813
Precipitation (mm)776464728980
Snowfall (cm)9174412
Jul – DecJulAugSepOctNovDec
Avg high (°C)24262317103
Avg temp (°C)2022191360
Avg low (°C)17191582−4
Precipitation (mm)12415615010611195
Snowfall (cm)1879

Sky & atmosphere

JanFebMarAprMayJunJulAugSepOctNovDec
Cloud cover (%)918677686973787270718289
Relative humidity (%)878580818385878683808286
Wind speed (mph)9.19.68.15.53.73.03.03.44.55.46.58.1
Jan – JunJanFebMarAprMayJun
Cloud cover (%)918677686973
Relative humidity (%)878580818385
Wind speed (mph)9.19.68.15.53.73.0
Jul – DecJulAugSepOctNovDec
Cloud cover (%)787270718289
Relative humidity (%)878683808286
Wind speed (mph)3.03.44.55.46.58.1
Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Hakodate, about 5 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 →