Powder Reliability Leaderboard

Historical powder reliability ranked across all resorts

Powder Reliability Leaderboard
Rank	Resort	Overall	Powder Days	Base	Snow Quality	Conditions
1	Nozawa Onsen Snow Resort	74	81	92	46	36
2	Myoko Suginohara Ski Resort	73	77	67	83	25
3	Ikenotaira Onsen Alpen Blick	72	70	83	68	36
4	Niseko United	72	45	100	93	69
5	Kiroro Snow World	71	44	100	92	59
6	Hakuba Happo-One Snow Resort	70	48	100	75	69
7	Tsugaike Mountain Resort	68	51	100	67	56
8	Sapporo Kokusai Ski Resort	68	36	100	96	56
9	Geto Kogen Ski Resort	67	47	100	73	32
10	Hakuba Cortina Snow Resort	66	61	92	53	32
11	Kandatsu Snow Resort	63	77	76	24	29
12	Madarao Mountain Resort	63	58	77	62	39
13	Sapporo Teine	62	24	100	88	69
14	Joetsu Kokusai Ski Resort	60	75	79	12	39
15	Rusutsu Resort	58	19	100	88	49
16	Hakuba Norikura Onsen Snow Resort	57	54	83	31	49
17	Furano Ski Resort	57	13	100	93	55
18	Hoshino Resorts Nekoma	52	32	75	62	54
19	Appi Kogen	52	13	92	84	40
20	Hoshino Resorts Tomamu	52	11	85	95	37
21	Takasu Snow Park	50	30	72	60	71
22	Shiga Kogen Yakebitaiyama	48	28	79	—	—
23	Hakuba Iwatake Snow Field	47	32	78	34	71
24	Zao Onsen Ski Resort	43	12	55	91	50
25	Tazawako Ski Resort	42	21	47	81	35
26	Canmore Ski Village	21	4	0	79	50

Powder Reliability Leaderboard
Rank	Resort	Overall	Powder Days	Base	Snow Quality	Conditions
1	Niseko United	95	100	100	81	78
2	Kiroro Snow World	77	65	100	78	55
3	Geto Kogen Ski Resort	73	64	100	68	34
4	Hakuba Happo-One Snow Resort	72	63	100	58	64
5	Nozawa Onsen Snow Resort	71	82	92	30	44
6	Sapporo Kokusai Ski Resort	71	49	100	86	40
7	Tsugaike Mountain Resort	70	61	100	50	64
8	Rusutsu Resort	68	52	100	67	44
9	Furano Ski Resort	66	39	100	81	59
10	Ikenotaira Onsen Alpen Blick	65	61	83	53	56
11	Myoko Suginohara Ski Resort	64	63	67	64	49
12	Hakuba Cortina Snow Resort	62	58	92	37	48
13	Joetsu Kokusai Ski Resort	60	73	79	10	54
14	Madarao Mountain Resort	60	56	77	46	54
15	Sapporo Teine	60	27	100	79	59
16	Kandatsu Snow Resort	55	66	76	13	32
17	Hakuba Norikura Onsen Snow Resort	55	59	83	14	42
18	Appi Kogen	54	21	92	76	40
19	Takasu Snow Park	53	45	72	41	77
20	Hoshino Resorts Tomamu	52	18	85	85	35
21	Shiga Kogen Yakebitaiyama	50	32	79	—	—
22	Hakuba Iwatake Snow Field	48	42	78	21	60
23	Hoshino Resorts Nekoma	43	25	75	38	45
24	Tazawako Ski Resort	42	24	47	73	35
25	Zao Onsen Ski Resort	42	16	55	89	20
26	Canmore Ski Village	30	32	0	59	55

Powder Reliability Leaderboard
Rank	Resort	Overall	Powder Days	Base	Snow Quality	Conditions
1	Hakuba Happo-One Snow Resort	63	53	100	36	68
2	Sapporo Teine	59	38	100	50	52
3	Kiroro Snow World	58	37	100	46	55
4	Geto Kogen Ski Resort	57	42	100	32	56
5	Niseko United	57	38	100	44	52
6	Tsugaike Mountain Resort	55	45	100	20	41
7	Nozawa Onsen Snow Resort	53	52	92	8	39
8	Sapporo Kokusai Ski Resort	52	20	100	62	27
9	Hakuba Cortina Snow Resort	48	38	92	14	48
10	Appi Kogen	47	18	92	51	73
11	Furano Ski Resort	47	12	100	47	86
12	Madarao Mountain Resort	46	45	77	14	30
13	Myoko Suginohara Ski Resort	46	43	67	33	17
14	Hoshino Resorts Tomamu	45	18	85	57	27
15	Kandatsu Snow Resort	40	38	76	1	35
16	Hoshino Resorts Nekoma	39	26	75	16	62
17	Ikenotaira Onsen Alpen Blick	39	23	83	14	43
18	Hakuba Norikura Onsen Snow Resort	37	27	83	4	38
19	Joetsu Kokusai Ski Resort	35	27	79	1	19
20	Rusutsu Resort	35	10	100	37	17
21	Shiga Kogen Yakebitaiyama	34	17	79	—	—
22	Takasu Snow Park	33	18	72	10	73
23	Zao Onsen Ski Resort	26	8	55	72	60
24	Hakuba Iwatake Snow Field	24	22	78	3	54
25	Tazawako Ski Resort	11	7	47	36	25
26	Canmore Ski Village	6	10	0	17	17

Powder Reliability Leaderboard
Rank	Resort	Overall	Powder Days	Base	Snow Quality	Conditions
1	Niseko United	78	64	100	80	71
2	Nozawa Onsen Snow Resort	73	84	92	33	38
3	Hakuba Happo-One Snow Resort	72	57	100	66	68
4	Kiroro Snow World	72	53	100	78	57
5	Geto Kogen Ski Resort	70	55	100	68	36
6	Myoko Suginohara Ski Resort	69	75	67	68	31
7	Tsugaike Mountain Resort	69	58	100	56	56
8	Sapporo Kokusai Ski Resort	68	41	100	86	49
9	Ikenotaira Onsen Alpen Blick	67	67	83	54	41
10	Hakuba Cortina Snow Resort	65	63	92	43	38
11	Madarao Mountain Resort	62	61	77	49	41
12	Sapporo Teine	62	30	100	79	63
13	Kandatsu Snow Resort	60	75	76	17	30
14	Joetsu Kokusai Ski Resort	60	74	79	10	42
15	Rusutsu Resort	58	28	100	71	45
16	Furano Ski Resort	58	21	100	80	60
17	Hakuba Norikura Onsen Snow Resort	56	56	83	23	46
18	Appi Kogen	53	17	92	79	46
19	Hoshino Resorts Tomamu	51	15	85	83	35
20	Takasu Snow Park	50	35	72	49	73
21	Hoshino Resorts Nekoma	49	32	75	49	53
22	Shiga Kogen Yakebitaiyama	49	30	79	—	—
23	Hakuba Iwatake Snow Field	47	36	78	26	66
24	Zao Onsen Ski Resort	43	13	55	88	42
25	Tazawako Ski Resort	41	22	47	73	35
26	Canmore Ski Village	22	13	0	61	49

How scores are calculated

Powder Days 40%

average powder days per season, where a powder day has ≥ 20 cm of new snow from either the weather station OR the resort's own day-over-day depth gain (whichever catches it). Normalised to a per-window ceiling (20 days in peak season, 30 over the whole season).

Base 25%

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 scores on a smooth scale — from 0 at ≤ 40% of days deep to full credit at ≥ 55% — then averaged across seasons. Adapted from Witmer 1986 / Abegg 1996; uses on-mountain depth, not the valley station.

Snow Quality 20%

fraction of snowfall days where ERA5 daily mean temperature ≤ −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 15%

fraction of powder days calmer than the resort's own typical winter wind (below its 75th-percentile ERA5 wind). A relative anchor is used because absolute ERA5 grid wind reflects the model's 9 km terrain cell, not on-slope sheltering. Weighted low and best read as a hint, not a ranking factor.