Morioka, Japan climate

Cfa Humid subtropical

Morioka has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 28°C, while the coldest is January averaging around −5°C at night. Precipitation totals about 1280 mm a year and is strongly seasonal — July alone averages 198 mm while February barely receives 48 mm.

☀️ Summers

Warm

Highs near 28°C in August.

❄️ Winters

Cold

Lows near −5°C in January.

🌧️ Rain

Wet

About 1280 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

Hours of sunshine per day

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

Morioka climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	2	3	8	14	20	24	27	28	24	18	11	5
Avg temp (°C)	−2	−1	3	9	15	19	22	24	19	13	6	1
Avg low (°C)	−5	−5	−2	3	9	14	19	20	15	8	2	−3
Precipitation (mm)	49	48	82	85	107	109	198	185	152	109	86	70

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	2	3	8	14	20	24
Avg temp (°C)	−2	−1	3	9	15	19
Avg low (°C)	−5	−5	−2	3	9	14
Precipitation (mm)	49	48	82	85	107	109

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	27	28	24	18	11	5
Avg temp (°C)	22	24	19	13	6	1
Avg low (°C)	19	20	15	8	2	−3
Precipitation (mm)	198	185	152	109	86	70

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	67	67	70	69	71	76	80	73	74	68	67	70
Relative humidity (%)	95	95	88	82	81	83	86	86	87	86	89	92
Wind speed (mph)	1.7	2.4	2.0	0.9	0.2	0.1	0.1	0.1	0.1	0.2	0.2	0.6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	67	67	70	69	71	76
Relative humidity (%)	95	95	88	82	81	83
Wind speed (mph)	1.7	2.4	2.0	0.9	0.2	0.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	80	73	74	68	67	70
Relative humidity (%)	86	86	87	86	89	92
Wind speed (mph)	0.1	0.1	0.1	0.2	0.2	0.6

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Morioka, about 1 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 →