Rumoi (Hokkaido): temperature and climate normals

Latest17.8 °COct 9, 2026 20:10 JST

24 h max / min18.8 °C / 16.0 °C

Annual mean (normal)8.0 °Crank 743 of 903

Annual precipitation (normal)1,154.1mmrank 756

Altitude24 m

Last 24 hours

Mean maxMeanMean min

Month	Mean	Max	Min	≥30°C	Min<0°C	Precip.	Sun	Snow
Jan	-4.1 °C	-1.0 °C	-7.4 °C	0.0days	30.7days	95.8mm	48.0h	74 cm
Feb	-3.7 °C	-0.4 °C	-7.4 °C	0.0days	27.9days	68.5mm	69.7h	86 cm
Mar	0.0 °C	3.2 °C	-3.5 °C	0.0days	26.8days	53.5mm	129.7h	72 cm
Apr	5.5 °C	9.4 °C	1.6 °C	0.0days	9.2days	43.2mm	174.5h	18 cm
May	11.1 °C	15.4 °C	7.2 °C	0.0days	0.3days	59.7mm	201.2h	0 cm
Jun	15.4 °C	19.2 °C	12.3 °C	0.0days	0.0days	56.3mm	174.0h	0 cm
Jul	19.6 °C	23.1 °C	16.7 °C	0.6days	0.0days	113.9mm	169.2h	0 cm
Aug	20.9 °C	24.6 °C	17.7 °C	1.1days	0.0days	126.6mm	174.4h	0 cm
Sep	17.2 °C	21.4 °C	13.1 °C	0.3days	0.0days	145.4mm	167.5h	0 cm
Oct	11.1 °C	15.2 °C	6.9 °C	0.0days	0.4days	131.4mm	124.3h	0 cm
Nov	4.4 °C	7.8 °C	1.1 °C	0.0days	11.1days	140.0mm	51.9h	13 cm
Dec	-1.5 °C	1.3 °C	-4.4 °C	0.0days	28.1days	119.9mm	29.6h	47 cm
Year	8.0 °C	11.6 °C	4.5 °C	2.0days	134.5days	1,154.1mm	1,514.0h	90 cm

For reference: latest 17.8 °C; the Oct mean normal is 11.1 °C (one observation vs a monthly mean).

Normals: JMA 2020 normals (1991–2020 averages). Latest values are observations fetched once a day, not real time.