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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 79°F, while the coldest is January averaging around 21°F at night. Around 47 inches of precipitation falls each year, peaking in August (6.2 inches) and easing off in March (2.5 inches).

☀️ Summers
Warm
Highs near 79°F in August.
❄️ Winters
Cold
Lows near 21°F in January.
🌧️ Rain
Wet
About 47 in of rain a year.
Wettest in August
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) 03.57 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 (°F)343542546369757974635038
Avg temp (°F)282935455461697266554332
Avg low (°F)212228374655636658463526
Precipitation (in)3.02.52.52.83.53.14.96.25.94.24.43.7
Jan – JunJanFebMarAprMayJun
Avg high (°F)343542546369
Avg temp (°F)282935455461
Avg low (°F)212228374655
Precipitation (in)3.02.52.52.83.53.1
Jul – DecJulAugSepOctNovDec
Avg high (°F)757974635038
Avg temp (°F)697266554332
Avg low (°F)636658463526
Precipitation (in)4.96.25.94.24.43.7

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 →