What does relative sunshine duration mean?

The share of actual sunshine hours against the maximum possible. It makes places with short winter days fairly comparable with very sunny locations.

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National ranking · Data 1991–2020 · Source: BFS

The sunniest municipalities in Switzerland (1991–2020)

Swiss municipality rankings →

Ardon (VS) is the sunniest municipality in Switzerland: 58.1% of possible sunshine duration (1991–2020 normals). Next come Conthey (58%) and Savièse (58%). Source: MeteoSwiss 1 km climate-normals grid.

Top 100

MeteoSchweiz · 1991–2020

Rank	Municipality	Sunshine	Canton	Residents
1	Ardon	58.1%	VS	3'938
2	Conthey	58%	VS	9'661
3	Savièse	58%	VS	8'453
4	Grimisuat	57.9%	VS	3'979
5	Ascona	57.4%	TI	5'290
6	Saint-Léonard	57.4%	VS	2'618
7	Chamoson	57.1%	VS	4'486
8	Ayent	57.1%	VS	4'509
9	Brissago	56.9%	TI	1'577
10	Lens	56.9%	VS	4'590
11	Sion	56.9%	VS	37'844
12	Locarno	56.8%	TI	16'463
13	Vex	56.7%	VS	1'970
14	Sierre	56.6%	VS	18'059
15	Brione sopra Minusio	56.5%	TI	432
16	Muralto	56.5%	TI	2'513
17	Ronco sopra Ascona	56.4%	TI	516
18	Fully	56.4%	VS	9'407
19	Crans-Montana	56.4%	VS	10'782
20	Cadenazzo	56.3%	TI	3'139
21	Losone	56.3%	TI	6'780
22	Terre di Pedemonte	56.3%	TI	2'646
23	Leytron	56.3%	VS	3'594
24	Manno	56.1%	TI	1'381
25	Noble-Contrée	56.1%	VS	4'727
26	Sant'Antonino	56%	TI	2'655
27	Tenero-Contra	56%	TI	3'417
28	Gambarogno	56%	TI	4'977
29	Muzzano	55.9%	TI	775
30	Saxon	55.9%	VS	7'605
31	Zermatt	55.9%	VS	6'113
32	Bedano	55.8%	TI	1'501
33	Bioggio	55.8%	TI	2'802
34	Cademario	55.8%	TI	784
35	Massagno	55.8%	TI	6'976
36	Savosa	55.8%	TI	2'315
37	Vétroz	55.8%	VS	6'725
38	Comano	55.7%	TI	2'194
39	Cureglia	55.7%	TI	1'484
40	Lamone	55.7%	TI	1'748
41	Magliaso	55.7%	TI	1'609
42	Porza	55.7%	TI	1'696
43	Torricella-Taverne	55.7%	TI	3'128
44	Vezia	55.7%	TI	1'957
45	Martigny-Bourg	55.7%	VS	22'513
46	Agno	55.6%	TI	4'582
47	Caslano	55.6%	TI	4'393
48	Vernate	55.6%	TI	618
49	Avegno Gordevio	55.6%	TI	1'525
50	Minusio	55.5%	TI	7'273
51	Canobbio	55.5%	TI	2'403
52	Collina d'Oro	55.5%	TI	4'932
53	Varen	55.5%	VS	701
54	Arbaz	55.5%	VS	1'474
55	Törbel	55.5%	VS	514
56	Brusino Arsizio	55.4%	TI	467
57	Mezzovico-Vira	55.4%	TI	1'418
58	Neggio	55.4%	TI	322
59	Vico Morcote	55.4%	TI	398
60	Tresa	55.4%	TI	3'147
61	Mergoscia	55.3%	TI	194
62	Grancia	55.3%	TI	457
63	Melide	55.3%	TI	1'812
64	Riva San Vitale	55.3%	TI	2'740
65	Chippis	55.3%	VS	1'627
66	Bellinzona	55.2%	TI	45'828
67	Cugnasco-Gerra	55.2%	TI	2'838
68	Origlio	55.2%	TI	1'534
69	Pura	55.2%	TI	1'368
70	Chiasso	55.2%	TI	7'677
71	Lema	55.2%	TI	2'667
72	Lugano	55.1%	TI	63'691
73	Morcote	55.1%	TI	681
74	Balerna	55.1%	TI	3'415
75	Nendaz	55.1%	VS	7'354
76	Orselina	55%	TI	682
77	Aranno	55%	TI	348
78	Arogno	55%	TI	931
79	Raron	55%	VS	2'030
80	Veysonnaz	55%	VS	614
81	Täsch	55%	VS	1'341
82	Ponte Capriasca	54.9%	TI	1'965
83	Monteceneri	54.9%	TI	4'746
84	Val Mara	54.9%	TI	3'048
85	Morbio Inferiore	54.9%	TI	4'437
86	Novazzano	54.9%	TI	2'339
87	Vacallo	54.9%	TI	3'511
88	Breggia	54.9%	TI	1'842
89	Hérémence	54.9%	VS	1'553
90	Salgesch	54.9%	VS	1'777
91	Niedergesteln	54.9%	VS	731
92	Roveredo	54.8%	GR	2'711
93	Isone	54.8%	TI	407
94	Bissone	54.8%	TI	945
95	Steg-Hohtenn	54.8%	VS	1'768
96	Vernayaz	54.8%	VS	1'978
97	Randa	54.8%	VS	448
98	Stalden	54.8%	VS	1'140
99	Coldrerio	54.7%	TI	2'838
100	Evolène	54.7%	VS	1'673

1991–2020 · MeteoSwiss, retrieved 28.08.2026

How we measure this

MeteoSchweiz

Relative sunshine duration (actual as a share of astronomically possible sunshine) from the MeteoSwiss 1 km gridded climate normals — a spatial analysis of the 1991–2020 normals period — read at the municipality's main settlement. The relative figure is topography-fair because it accounts for shorter winter days.

Frequently asked questions

What does relative sunshine duration mean?: The share of actual sunshine hours against the maximum possible. It makes places with short winter days fairly comparable with very sunny locations.