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Minamiarupusu, Japan climate

Cfa Humid subtropical

Minamiarupusu 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 −3°C at night. Precipitation totals about 1213 mm a year and is strongly seasonal — September alone averages 190 mm while December barely receives 39 mm.

☀️ Summers

Hot

Highs near 32°C in August.

❄️ Winters

Cold

Lows near −3°C in January.

🌧️ Rain

Wet

About 1213 mm of rain a year.

Wettest in September

⛅ 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)

Minamiarupusu climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	8	10	14	20	24	27	30	32	27	21	16	10
Avg temp (°C)	2	3	7	13	18	21	25	26	22	16	10	4
Avg low (°C)	−3	−2	2	7	12	17	21	22	18	11	5	−1
Precipitation (mm)	48	49	95	89	97	124	154	114	190	159	56	39

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	8	10	14	20	24	27
Avg temp (°C)	2	3	7	13	18	21
Avg low (°C)	−3	−2	2	7	12	17
Precipitation (mm)	48	49	95	89	97	124

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	32	27	21	16	10
Avg temp (°C)	25	26	22	16	10	4
Avg low (°C)	21	22	18	11	5	−1
Precipitation (mm)	154	114	190	159	56	39

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	50	55	62	66	72	83	78	69	73	67	55	49
Relative humidity (%)	80	78	78	77	78	82	83	83	85	85	83	81
Wind speed (mph)	2.9	3.1	3.2	3.1	2.7	2.2	2.2	2.1	2.3	2.2	2.3	2.6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	50	55	62	66	72	83
Relative humidity (%)	80	78	78	77	78	82
Wind speed (mph)	2.9	3.1	3.2	3.1	2.7	2.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	78	69	73	67	55	49
Relative humidity (%)	83	83	85	85	83	81
Wind speed (mph)	2.2	2.1	2.3	2.2	2.3	2.6

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Nirasaki, about 10 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 →