Mount Koikakushusatsunai

コイカクシュサツナイ岳

Shinhidaka, Hokkaido · Elevation 1,721 m

Mount Koikakushusatsunai is a 1,721 m peak on the borders of Nakasatsunai, Taiki, and Shinhidaka in Hokkaido, set on the spine of the central Hidaka range within the newly designated Hidakasanmyaku-Erimo-Tokachi National Park (2024). The unwieldy name comes from the Ainu Koikakushusatsunai-gawa — "the river that runs east and dries up" — and climbers typically abbreviate the peak to "Koikaku." The standard route starts at the Satsunai River hut parking area on Route 111 and climbs the so-called summer ridge, a haul ranked among Hokkaido's three steepest ascents alongside the Schneider route on Mount Ishikari and Mount Kamui. The peak also serves as a waypoint for traverses to Yaoromappu and the deep-Hidaka 1839-mine summit, and is included in Hokkaidō Hyakumeizan.

Mount Koikakushusatsunai at a glance

Weather: The most settled day in the next 7 days is Mon, November 9: cloudy, gusts up to 14 m/s. Wed, Nov 4, Sat, Nov 7, Sun, Nov 8: strong wind (gusts up to 25 m/s).

Mount Koikakushusatsunai weather (hourly, 14 days)

Sunrise today 06:04, sunset 16:21

		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	-4°	-7°	-8°	-8°	-9°	-6°	-6°	-5°	-5°	-5°	-3°	-2°	-3°	-8°	-7°	-7°	-6°	-4°	1°	1°	1°	1°	1°	1°	1°	1°	2°	4°	3°	-1°	-4°	-7°	-9°	-9°	-9°	-8°	-8°	-10°	-10°	-10°	-10°	-11°	-9°	-8°	-8°	-9°	-10°	-11°	-12°	-11°	-8°	-8°	-13°	-13°	-7°	-6°	-9°	-10°	-9°	-6°	-10°	-12°	-7°	-6°	-12°	-12°	-10°	-9°	-10°	-13°	-4°	-4°	-10°	-11°	-2°	-2°	-2°	-3°	-1°	-3°	-9°	-10°	-5°	-5°
Precipitation	mm							2.7	0.8												0.9	0.5	0.7	7	1.9	1.7	2.2	9	2.1	0.7	1.1		0.7		0.4	0.5	0.9	0.4				0.2			0.3	0.2													3.0	3.7	1.4				0.8	0.1		0.1								0.2	1.5	5	0.8	1.0	0.6	0.2
New snow	cm	<.1					<.1	2.7	0.8																							<.1	0.7	<.1	0.4	0.5	0.9	0.4			<.1	0.2	<.1	<.1	0.3	0.2	<.1						<.1					<.1	3.0	3.7	1.4			<.1	0.8	0.1		<.1	<.1	<.1											<.1	<.1
Snow depth	cm	<1	<1	<1	<1	<1	<1	2	3	3	3	3	3	3	2	2	2	2	2	2	1	<1	<1	<1	<1	<1	<1	<1	0	0	0	0	<1	<1	<1	1	2	2	2	2	2	1	1	1	1	2	2	2	2	2	2	2	1	1	1	1	1	1	4	7	8	8	7	7	7	7	7	6	6	6	6	6	6	6	6	5	4	4	4	3	3	3	3	3	2
Wind	m/s	5	3	4	4	3	4	4	5	6	5	4	3	2	2	2	2	2	1	2	2	1	0	0	0	0	1	2	4	4	8	9	9	9	7	7	8	9	10	9	8	8	7	9	8	8	7	5	5	3	3	4	5	2	2	2	2	2	4	3	1	1	1	3	3	2	2	4	3	1	1	0	1	1	2	2	3	2	1	1	0	2	3	1	1
Wind gusts	m/s	16	14	12	13	13	12	16	16	18	17	16	15	11	8	8	9	9	8	9	9	8	5	4	4	4	5	7	14	14	24	25	26	27	25	21	23	25	28	27	25	23	24	24	24	23	22	19	17	15	11	11	14	13	9	7	7	6	12	11	8	4	6	9	13	12	10	12	12	11	9	6	4	6	7	10	11	10	9	6	6	9	9	9	6
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