Mt. Iwaidouyama

岩井堂山

Sakaki, Nagano · Elevation 793 m

Iwaidousan is a 793 m peak on the boundary between Sakaki Town and Chikuma City in Nagano Prefecture, a shapely cone on the west bank of the Chikuma River that locals also call "Karakasa-yama" or "Jizai-san". A third-class triangulation point sits at its summit, which once carried a beacon platform belonging to the Murakami clan of the Sengoku period; the standard climb starts behind the main hall of Jizai Shrine at the foot. The peak appears in the regional "Shinshu Yamaaruki Chizu — Satoyama Hen" guide, but the whole mountain is closed to climbers in autumn as a matsutake-mushroom reserve.

Mt. Iwaidouyama at a glance

Weather: The most settled day in the next 7 days is Wed, November 4: clear, gusts up to 8 m/s.

Mt. Iwaidouyama weather (hourly, 14 days)

Sunrise today 06:12, sunset 16:50

		Tue, 11/3					Wed, 11/4										Thu, 11/5								Fri, 11/6								Sat, 11/7								Sun, 11/8								Mon, 11/9						Tue, 11/10				Wed, 11/11				Thu, 11/12				Fri, 11/13				Sat, 11/14				Sun, 11/15				Mon, 11/16				Tue, 11/17
Japan time		15	17	19	21	23	1	3	5	7	9	11	13	15	18	21	0	3	6	9	12	15	18	21	0	3	6	9	12	15	18	21	0	3	6	9	12	15	18	21	0	3	6	9	12	15	18	21	0	3	6	9	15	21	3	9	15	21	3	9	15	21	3	9	15	21	3	9	15	21	3	9	15	21	3	9	15	21	3	9	15	21	3	9	15

Temperature	°C	11°	7°	4°	2°	1°	1°	1°	1°	1°	7°	12°	14°	13°	9°	9°	7°	7°	8°	9°	13°	14°	10°	10°	9°	7°	7°	12°	17°	17°	11°	7°	4°	2°	0°	2°	6°	7°	-1°	-3°	-4°	-3°	-3°	3°	9°	7°	3°	2°	1°	1°	1°	4°	8°	3°	2°	6°	12°	4°	2°	2°	6°	1°	0°	4°	9°	0°	0°	4°	6°	0°	-2°	4°	12°	2°	1°	7°	15°	8°	7°	10°	11°	4°	1°	3°	8°
Precipitation	mm																1.1	10	4.5	2.0	0.9					0.1	0.6	0.3	0.4					0.6		0.1	0.1													0.1	0.1		0.1	1.2	0.9				4.2	1.3	0.3							0.4	0.1									9	6	0.2	1.2	0.1
New snow	cm																																																										0.5	0.6	<.1
Snow depth	cm	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	<1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Wind	m/s	3	2	1	1	1	1	1	1	1	1	0	1	3	3	3	2	1	1	1	0	0	1	0	0	0	0	1	3	2	2	1	0	1	1	1	2	1	1	1	1	1	1	1	3	4	1	1	1	1	1	1	3	2	1	1	4	2	3	2	5	1	0	1	4	1	1	2	4	1	1	1	2	1	0	1	1	1	1	1	5	3	2	2	3
Wind gusts	m/s	9	9	5	3	2	2	2	2	3	4	4	5	8	9	10	10	8	6	4	4	3	3	4	2	2	3	3	8	9	6	5	3	4	4	4	6	7	5	5	4	4	4	5	10	12	10	4	4	4	4	4	10	9	5	5	14	13	9	9	13	13	4	5	11	10	3	6	12	11	4	4	6	5	4	4	8	5	8	7	15	15	10	7	7
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