Powder Reliability Leaderboard

Historical powder reliability ranked across all resorts

Powder Reliability Leaderboard
Rank	Resort	Overall	Powder Days	Base	Snow Quality	Conditions	Bad-year days
1	Akakura Kanko Resort	79	73	95	76	52	12.2
2	Seki Onsen Ski Resort	79	71	100	75	53	12.2
3	GALA Yuzawa	72	86	87	35	32	14.2
4	Akakura Onsen Ski Resort	71	66	94	54	60	11.2
5	Niseko United	71	42	100	93	68	7
6	Myoko Suginohara Ski Resort	70	71	67	83	27	12.2
7	Nozawa Onsen Snow Resort	69	70	92	46	30	12.2
8	Ryuoo Ski Park	69	63	87	69	26	9.4
9	Hakuba Happo-One Snow Resort	69	46	100	75	77	7
10	Kiroro Snow World	69	40	100	92	57	6.2
11	Ikenotaira Onsen Alpen Blick	68	62	83	69	36	9.4
12	Sapporo Kokusai Ski Resort	68	35	100	96	60	5.2
13	Tsugaike Mountain Resort	67	45	100	67	75	7
14	Naeba Ski Resort	65	59	67	86	18	8.6
15	Geto Kogen Ski Resort	65	43	100	73	35	7
16	Hakuba Cortina Snow Resort	63	52	92	53	38	9
17	Maiko Snow Resort	61	74	84	10	39	13.2
18	Lotte Arai Resort	61	58	89	35	36	8.4
19	Sapporo Teine	61	23	100	89	65	2.2
20	Ishiuchi Maruyama	60	77	75	10	40	13.4
21	Yuzawa Kogen	60	68	75	29	34	11
22	Hakuba Goryu & Hakuba47	60	30	100	66	72	4.2
23	Kandatsu Snow Resort	59	70	76	24	25	11.2
24	Madarao Mountain Resort	59	48	77	62	35	9
25	Tangram Ski Circus	59	43	92	56	36	7
26	Rusutsu Resort	57	18	100	88	40	2
27	Furano Ski Resort	57	12	100	93	54	1.2
28	Shiga Kogen Yokoteyama-Shibutoge	55	25	80	91	25	3
29	Hakuba Norikura Onsen Snow Resort	54	47	83	31	56	7
30	Shiga Kogen Yakebitaiyama	54	25	79	87	22	3
31	Iwappara	53	65	66	21	22	11
32	Okushiga Kogen	53	24	79	86	21	4
33	Hoshino Resorts Tomamu	52	11	86	95	44	1
34	Togakushi	51	35	61	78	27	5.2
35	Takasu Snow Park	50	29	72	60	66	4
36	Appi Kogen	50	11	92	84	26	0.2
37	Hoshino Resorts Nekoma	49	28	75	62	45	3
38	Asarigawa Onsen Ski Resort	47	23	61	76	63	2.2
39	Shiga Kogen Ichinose Diamond	47	21	63	83	27	3
40	Hakuba Iwatake Snow Field	46	27	78	34	81	4
41	Shiga Kogen Ichinose Family	46	22	57	87	27	3.2
42	Shiga Kogen Kumanoyu	46	20	59	87	17	2.2
43	Dynaland	43	23	62	59	52	2.2
44	Zao Onsen Ski Resort	42	10	55	91	40	1
45	Kashimayari Snow Resort	41	24	58	45	76	2.4
46	Tazawako Ski Resort	41	19	46	81	38	2
47	Palcall Tsumagoi Resort	28	14	8	81	24	2
48	Hakuba Sanosaka	26	23	17	32	70	3
49	Canmore Ski Village	21	4	0	79	50	0
50	Karuizawa Prince Hotel Ski Resort	14	13	0	26	50	2

Powder Reliability Leaderboard
Rank	Resort	Overall	Powder Days	Base	Snow Quality	Conditions	Bad-year days
1	Niseko United	93	97	100	81	73	6
2	Kiroro Snow World	75	60	100	78	52	2.2
3	Geto Kogen Ski Resort	74	66	100	68	33	3.2
4	Akakura Kanko Resort	73	66	95	61	57	2.2
5	Hakuba Happo-One Snow Resort	71	58	100	58	73	2.2
6	Sapporo Kokusai Ski Resort	71	47	100	86	49	2
7	Ryuoo Ski Park	70	72	87	51	38	3
8	Seki Onsen Ski Resort	70	58	100	59	55	2.2
9	Rusutsu Resort	70	55	100	67	43	3
10	Tsugaike Mountain Resort	69	58	100	50	68	3
11	Nozawa Onsen Snow Resort	67	72	92	30	48	3
12	Akakura Onsen Ski Resort	67	66	94	36	70	3
13	Ikenotaira Onsen Alpen Blick	65	60	83	53	57	1.4
14	Furano Ski Resort	65	36	100	81	54	1.2
15	Hakuba Goryu & Hakuba47	64	50	100	48	63	2
16	Myoko Suginohara Ski Resort	63	63	67	64	46	2
17	Naeba Ski Resort	63	58	67	76	25	2
18	Tangram Ski Circus	63	58	92	40	54	2.2
19	GALA Yuzawa	61	67	87	22	31	3
20	Hakuba Cortina Snow Resort	61	55	92	37	51	3
21	Sapporo Teine	59	22	100	78	71	0.2
22	Maiko Snow Resort	58	66	84	10	46	3
23	Madarao Mountain Resort	58	53	77	46	51	2
24	Yuzawa Kogen	56	63	75	19	42	3
25	Lotte Arai Resort	55	53	89	20	45	2
26	Takasu Snow Park	54	46	72	41	73	1
27	Shiga Kogen Yakebitaiyama	54	30	79	77	21	1
28	Appi Kogen	54	20	92	76	42	0.2
29	Kandatsu Snow Resort	53	61	76	13	34	3
30	Ishiuchi Maruyama	53	60	75	10	48	2.2
31	Hakuba Norikura Onsen Snow Resort	53	55	83	14	43	1.2
32	Hoshino Resorts Tomamu	53	20	86	85	26	1
33	Shiga Kogen Yokoteyama-Shibutoge	52	21	80	87	20	0.2
34	Okushiga Kogen	51	24	79	77	17	0.2
35	Iwappara	48	57	66	11	29	2.2
36	Hakuba Iwatake Snow Field	48	41	78	21	54	2
37	Togakushi	48	34	61	64	21	1.2
38	Asarigawa Onsen Ski Resort	46	26	61	63	64	1
39	Hoshino Resorts Nekoma	44	28	75	38	50	0.8
40	Shiga Kogen Kumanoyu	44	20	59	79	16	0.2
41	Zao Onsen Ski Resort	44	20	55	89	26	0
42	Dynaland	43	30	62	41	69	0
43	Tazawako Ski Resort	42	23	46	73	45	1
44	Shiga Kogen Ichinose Family	42	19	57	77	17	0.2
45	Kashimayari Snow Resort	40	33	58	28	56	0.2
46	Shiga Kogen Ichinose Diamond	40	14	63	71	8	0.2
47	Canmore Ski Village	31	33	0	59	59	2
48	Palcall Tsumagoi Resort	27	18	8	68	35	0.2
49	Hakuba Sanosaka	25	29	17	24	43	0
50	Karuizawa Prince Hotel Ski Resort	8	7	0	15	71	0

Powder Reliability Leaderboard
Rank	Resort	Overall	Powder Days	Base	Snow Quality	Conditions	Bad-year days
1	Hakuba Happo-One Snow Resort	64	55	100	36	62	1
2	GALA Yuzawa	59	72	87	4	30	1.2
3	Tsugaike Mountain Resort	58	52	100	20	52	1
4	Akakura Kanko Resort	57	50	95	24	47	1
5	Niseko United	57	38	100	44	48	1
6	Geto Kogen Ski Resort	56	40	100	32	50	1
7	Sapporo Teine	56	33	100	51	40	1
8	Kiroro Snow World	55	33	100	45	45	1
9	Nozawa Onsen Snow Resort	52	50	92	8	40	1
10	Sapporo Kokusai Ski Resort	52	20	100	61	33	0
11	Ryuoo Ski Park	49	42	87	22	20	1
12	Shiga Kogen Yokoteyama-Shibutoge	49	28	80	56	29	0.2
13	Hakuba Goryu & Hakuba47	48	28	100	20	53	0
14	Appi Kogen	48	22	92	51	54	0
15	Lotte Arai Resort	47	43	89	7	26	0
16	Myoko Suginohara Ski Resort	47	42	67	33	37	0.2
17	Hakuba Cortina Snow Resort	47	37	92	14	36	0
18	Furano Ski Resort	46	12	100	47	71	0
19	Madarao Mountain Resort	44	40	77	14	21	0.2
20	Hoshino Resorts Tomamu	44	20	86	56	0	0
21	Akakura Onsen Ski Resort	43	30	94	8	50	0
22	Maiko Snow Resort	42	38	84	1	26	0
23	Ikenotaira Onsen Alpen Blick	41	28	83	15	47	0
24	Togakushi	41	27	61	46	25	0.2
25	Seki Onsen Ski Resort	41	20	100	21	17	0
26	Shiga Kogen Kumanoyu	40	27	59	49	19	0.2
27	Ishiuchi Maruyama	39	35	75	1	33	0.2
28	Kandatsu Snow Resort	39	35	76	1	38	0
29	Naeba Ski Resort	39	23	67	42	21	0
30	Hakuba Norikura Onsen Snow Resort	37	28	83	4	35	0
31	Hoshino Resorts Nekoma	37	22	75	16	55	0
32	Tangram Ski Circus	37	17	92	10	20	0
33	Okushiga Kogen	36	18	79	52	27	0
34	Shiga Kogen Yakebitaiyama	36	17	79	54	20	0
35	Rusutsu Resort	35	10	100	37	17	0
36	Yuzawa Kogen	32	23	75	1	14	0.2
37	Takasu Snow Park	32	18	72	10	55	0
38	Iwappara	29	22	66	1	15	0
39	Zao Onsen Ski Resort	26	8	55	72	40	0
40	Hakuba Iwatake Snow Field	25	23	78	3	64	0
41	Asarigawa Onsen Ski Resort	20	12	61	22	43	0
42	Shiga Kogen Ichinose Family	20	12	57	54	43	0
43	Shiga Kogen Ichinose Diamond	19	12	63	43	43	0
44	Palcall Tsumagoi Resort	16	13	8	41	50	0
45	Dynaland	15	10	62	9	50	0
46	Hakuba Sanosaka	13	20	17	2	33	0
47	Tazawako Ski Resort	11	7	46	36	25	0
48	Kashimayari Snow Resort	10	12	58	5	43	0
49	Canmore Ski Village	7	10	0	17	33	0
50	Karuizawa Prince Hotel Ski Resort	4	5	0	6	100	0

Powder Reliability Leaderboard
Rank	Resort	Overall	Powder Days	Base	Snow Quality	Conditions	Bad-year days
1	Akakura Kanko Resort	76	74	95	62	53	19
2	Niseko United	76	60	100	80	68	14
3	Seki Onsen Ski Resort	74	66	100	61	52	16.4
4	Hakuba Happo-One Snow Resort	72	56	100	67	74	12.8
5	GALA Yuzawa	71	87	87	27	32	20.2
6	Akakura Onsen Ski Resort	69	67	94	41	62	16.4
7	Geto Kogen Ski Resort	69	53	100	68	37	13.2
8	Kiroro Snow World	69	48	100	78	54	11.2
9	Nozawa Onsen Snow Resort	68	74	92	33	36	17.2
10	Ryuoo Ski Park	68	68	87	54	29	16
11	Tsugaike Mountain Resort	68	54	100	56	69	14
12	Myoko Suginohara Ski Resort	67	71	67	68	34	18.2
13	Sapporo Kokusai Ski Resort	67	39	100	85	54	9
14	Ikenotaira Onsen Alpen Blick	65	62	83	54	42	14.4
15	Naeba Ski Resort	63	59	67	75	20	15
16	Hakuba Cortina Snow Resort	62	56	92	43	41	14.2
17	Hakuba Goryu & Hakuba47	61	38	100	55	66	9
18	Maiko Snow Resort	60	73	84	8	39	18.2
19	Sapporo Teine	60	26	100	79	61	6
20	Lotte Arai Resort	59	60	89	25	37	13
21	Ishiuchi Maruyama	58	73	75	8	41	18.4
22	Madarao Mountain Resort	58	53	77	49	38	12.4
23	Tangram Ski Circus	58	47	92	43	41	12
24	Rusutsu Resort	58	28	100	71	40	6
25	Kandatsu Snow Resort	57	69	76	17	28	17.2
26	Yuzawa Kogen	57	66	75	22	35	16
27	Furano Ski Resort	57	19	100	80	56	4.2
28	Hakuba Norikura Onsen Snow Resort	54	51	83	23	51	11.2
29	Shiga Kogen Yokoteyama-Shibutoge	54	27	80	81	25	4.2
30	Shiga Kogen Yakebitaiyama	52	27	79	76	21	7
31	Appi Kogen	52	16	92	79	37	2
32	Iwappara	51	62	66	15	23	16
33	Okushiga Kogen	51	25	79	76	21	6.2
34	Hoshino Resorts Tomamu	51	16	86	83	29	4
35	Togakushi	50	37	61	69	25	8.2
36	Takasu Snow Park	50	35	72	49	67	6
37	Hoshino Resorts Nekoma	47	29	75	49	48	5.6
38	Hakuba Iwatake Snow Field	46	33	78	26	70	6.2
39	Asarigawa Onsen Ski Resort	45	24	61	63	61	5.2
40	Shiga Kogen Kumanoyu	44	23	59	75	17	4.2
41	Shiga Kogen Ichinose Family	44	21	57	77	26	5.2
42	Shiga Kogen Ichinose Diamond	43	20	63	70	25	4.2
43	Zao Onsen Ski Resort	43	14	55	88	35	2
44	Dynaland	42	25	62	48	57	4
45	Tazawako Ski Resort	40	20	46	73	39	4
46	Kashimayari Snow Resort	39	27	58	35	67	5
47	Palcall Tsumagoi Resort	26	16	8	68	31	4
48	Hakuba Sanosaka	25	26	17	25	57	6
49	Canmore Ski Village	22	13	0	61	54	2
50	Karuizawa Prince Hotel Ski Resort	12	12	0	18	57	3

How scores are calculated

Powder Days 45%

Powder Days (45%): the average number of powder days per season. A powder day has ≥ 20 cm of new snow, read from either the weather station OR the resort's own day-over-day depth gain, whichever catches it. The count is normalised to a per-window ceiling (20 days in peak season, 30 over the whole season).

Base 28%

Base Reliability (28%): how consistently the resort holds a deep base. For each season, the share of reported days (Dec 15 – Mar 31) with ≥ 150 cm of resort-reported on-mountain depth is scored on a smooth scale, from 0 at ≤ 40% of days deep to full credit at ≥ 55%, and the seasons are then averaged. Adapted from Witmer 1986 / Abegg 1996. It uses the resort's on-mountain depth and does not use the valley station.

Snow Quality 22%

Snow Quality (22%): the fraction of snowfall days where ERA5 daily mean temperature is ≤ −5°C at resort elevation, a proxy for dry, high snow-to-liquid-ratio powder (Kuchera & Ely 2004). ERA5 temperature is lapse-rate corrected to each resort's mid-point elevation. Surface temperature is an approximation of the full vertical profile.

Conditions 5%

Conditions (5%, advisory): the fraction of powder days calmer than the resort's own typical winter wind (below its 75th-percentile ERA5 wind). The anchor is relative because absolute ERA5 grid wind reflects the model's 9 km terrain cell and misses on-slope sheltering. The weight is low, so treat it as a hint.