Which municipality in canton Grisons is the sunniest?

Grono is the sunniest municipality in canton Grisons, at 59.5% relative sunshine (2025).

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.

← Canton Grisons overview

Ranking · Data 2025 · Source: BFS

The sunniest municipalities in canton Grisons (2025)

National ranking →

Grono is the sunniest municipality in canton Grisons: 59.5% of possible sunshine duration (2025). Next come Lostallo (59.5%) and Roveredo (59.5%). Source: MeteoSwiss, nearest station.

Ranking

MeteoSchweiz · 2025

Rank	Municipality	Sunshine	Residents
1	Grono	59.5%	1'556
2	Lostallo	59.5%	850
3	Roveredo	59.5%	2'625
4	Buseno	59.5%	91
5	Santa Maria in Calanca	59.5%	119
6	San Vittore	59.5%	912
7	Castaneda	59.5%	262
8	Cama	59.5%	691
9	Calanca	59.5%	211
10	Brusio	56.6%	1'105
11	St. Moritz	56.3%	4'926
12	Pontresina	56.3%	2'077
13	Madulain	56.3%	197
14	Celerina/Schlarigna	56.3%	1'411
15	Samedan	56.3%	2'913
16	Bever	56.3%	607
17	Zuoz	56.3%	1'218
18	La Punt Chamues-ch	56.3%	732
19	Silvaplana	56.3%	1'089
20	Sils im Engadin/Segl	55.6%	708
21	Sufers	54.6%	151
22	Muntogna da Schons	54.6%	371
23	Zillis-Reischen	54.6%	419
24	Tschappina	54.6%	140
25	Andeer	54.6%	926
26	Ferrera	54.6%	82
27	Bregaglia	54%	1'578
28	Val Müstair	54%	1'422
29	Chur	53.9%	38'949
30	Rhäzüns	53.9%	1'633
31	Rothenbrunnen	53.9%	312
32	Felsberg	53.9%	2'833
33	Domat/Ems	53.9%	8'286
34	Churwalden	53.9%	2'147
35	Tamins	53.9%	1'215
36	Bonaduz	53.9%	3'533
37	Trin	53.9%	1'525
38	Poschiavo	53%	3'525
39	S-chanf	52.6%	706
40	Sagogn	52.5%	766
41	Schluein	52.5%	612
42	Ilanz/Glion	52.5%	5'030
43	Lumnezia	52.5%	2'072
44	Safiental	52.5%	963
45	Obersaxen Mundaun	52.5%	1'148
46	Vals	51.5%	949
47	Rheinwald	51.5%	576
48	Cazis	51.4%	2'416
49	Lantsch/Lenz	51.4%	528
50	Masein	51.4%	532
51	Domleschg	51.4%	2'219
52	Thusis	51.4%	3'459
53	Urmein	51.4%	163
54	Albula/Alvra	51.4%	1'313
55	Rongellen	51.4%	61
56	Scharans	51.4%	838
57	Flerden	51.4%	254
58	Fürstenau	51.4%	349
59	Sils im Domleschg	51.4%	966
60	Vaz/Obervaz	51.4%	2'742
61	Soazza	50.8%	332
62	Mesocco	50.8%	1'420
63	Rossa	50.8%	161
64	Bergün Filisur	50.5%	901
65	Medel	49.4%	328
66	Disentis/Mustér	49.4%	2'080
67	Sumvitg	49.4%	1'079
68	Trun	49.4%	1'154
69	Tujetsch	49.4%	1'171
70	Maienfeld	49.3%	3'193
71	Malans	49.3%	2'527
72	Landquart	49.3%	9'191
73	Untervaz	49.3%	2'675
74	Zizers	49.3%	3'589
75	Jenins	49.3%	948
76	Fläsch	48.2%	868
77	Schmitten	48.1%	209
78	Arosa	48.1%	3'143
79	Davos	46.8%	10'800
80	Klosters	46.8%	4'473
81	Zernez	46.3%	1'579
82	Scuol	46.3%	4'572
83	Valsot	46.3%	811
84	Surses	46%	2'424
85	Avers	46%	168
86	Laax	44.5%	2'112
87	Falera	44.5%	627
88	Breil/Brigels	44.5%	1'713
89	Flims	44.5%	2'939

How we measure this

MeteoSchweiz

Relative sunshine duration (actual as a share of astronomically possible sunshine) from the nearest MeteoSwiss station, at most 25 km away, averaged up to 2025. The relative figure is topography-fair because it accounts for shorter winter days.

Frequently asked questions

Which municipality in canton Grisons is the sunniest?: Grono is the sunniest municipality in canton Grisons, at 59.5% relative sunshine (2025).
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.