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Kobayashi, Japan climate

Cfa Humid subtropical

Kobayashi has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 32°C, while the coldest is January averaging around 2°C at night. Precipitation totals about 2774 mm a year and is strongly seasonal — June alone averages 607 mm while January barely receives 77 mm.

☀️ Summers

Hot

Highs near 32°C in August.

❄️ Winters

Chilly

Lows near 2°C in January.

🌧️ Rain

Very wet

About 2774 mm of rain a year.

Wettest in June

⛅ 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

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Kobayashi climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	11	13	16	21	25	27	31	32	29	24	18	13
Avg temp (°C)	6	7	10	15	19	22	26	26	24	19	13	8
Avg low (°C)	2	3	5	10	15	19	23	23	20	14	9	4
Precipitation (mm)	77	133	165	182	226	607	474	257	306	137	111	100

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	11	13	16	21	25	27
Avg temp (°C)	6	7	10	15	19	22
Avg low (°C)	2	3	5	10	15	19
Precipitation (mm)	77	133	165	182	226	607

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	31	32	29	24	18	13
Avg temp (°C)	26	26	24	19	13	8
Avg low (°C)	23	23	20	14	9	4
Precipitation (mm)	474	257	306	137	111	100

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	71	67	66	64	68	81	70	62	63	55	60	66
Relative humidity (%)	82	80	80	79	80	86	85	85	85	84	84	83
Wind speed (m/s)	0.6	0.7	0.7	0.7	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	71	67	66	64	68	81
Relative humidity (%)	82	80	80	79	80	86
Wind speed (m/s)	0.6	0.7	0.7	0.7	0.6	0.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	70	62	63	55	60	66
Relative humidity (%)	85	85	85	84	84	83
Wind speed (m/s)	0.6	0.6	0.6	0.6	0.6	0.6

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Kobayashi, about 3 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 →